Predbat requested "Freeze Discharging" despite switch.predbat_set_export_freeze = False

[araines]

Describe the bug
I have turned off switch.predbat_set_export_freeze as Freeze Discharging tends to cause a lot of solar power to be wasted. However, this morning Predbat went in to Freeze Discharging mode.

Expected behaviour
Freeze Discharging should not be requested when switch.predbat_set_export_freeze = False.

Predbat version

v8.47.5

Environment details

• Sigenergy Sigenstor - 12kW inverter, 18kWh battery, 4kWh export limit, 11kWp solar array
• Standard HAOS install

Screenshots

Note that predbat.status (Status) switches between Demand, Exporting, and has a short period of "Hold Charging" at 13:30.
input_select.predbat_requested_mode (Predbat Requested Mode) is Demand (blue), Discharging (green), and Freeze Discharging (Purple).

You can see the period from 10:00-13:15 there has been significant solar clipping due to the system hitting the export limit and not being permitted to charge (Charge Cut-Off SoC = 0%).

Predbat plan history. From what I can see, all the export slots on the plan should've behaved pretty much the same way.

Configuration, showing switch.predbat_set_export_freeze is off.

Log file

Log extract for when it entered Freeze Discharge:

2026-08-08 09:15:00.406867: --------------- PredBat - update at 2026-08-08 09:15:00+01:00 with clock skew 0 minutes, minutes now 555
2026-08-08 09:15:00.648170: Saved current settings to /addon_configs/6adb4f0d_predbat/predbat_config.json
2026-08-08 09:15:00.648768: Using cached GitHub data for https://api.github.com/repos/springfall2008/batpred/releases age 5.0 minutes
2026-08-08 09:15:00.648985: Predbat /config/github.py repository springfall2008/batpred version v8.47.5 currently running, latest version is v8.47.5, latest beta is v8.47.5
2026-08-08 09:15:00.649219: Autoupdate: Currently up to date
2026-08-08 09:15:00.816047: Configuration: forecast_hours 30, num_cars 0, debug enable is False, calculate_plan_every 10 minutes
2026-08-08 09:15:00.816292: days_previous_auto enabled - using weighted-bucket historical load forecast over up to 7 days
2026-08-08 09:15:00.817322: Predbat mode is set to Control charge & discharge
2026-08-08 09:15:01.666528: iBoost energy today from sensor reads 0.72 kWh
2026-08-08 09:15:02.420320: Found 11522 load_today datapoints going back 8 days
2026-08-08 09:15:02.420566: Using load_power data to fill gaps in load_today data
2026-08-08 09:15:07.700710: Processing 385 30-minute periods for power integration
2026-08-08 09:15:09.434974: Car charging hold True, threshold 6.0kWh
2026-08-08 09:15:09.435173: Current data so far today: load 5.51kWh, import 0.02kWh, export 2.13kWh, PV 2.84kWh
2026-08-08 09:15:09.436166: Adding rate rates_import: {'rate': 21.23}p => 08-08 00:00:00 to 08-09 00:00:00 @ 21.23p, date None, day_of_week [], increment Falsep
2026-08-08 09:15:09.442726: Adding rate rates_gas: {'rate': 5.48}p => 08-08 00:00:00 to 08-09 00:00:00 @ 5.48p, date None, day_of_week [], increment Falsep
2026-08-08 09:15:09.459330: Gas rates: min 5.48p, max 5.48p, average 5.48p
2026-08-08 09:15:09.487212: Adding rate rates_export: {'rate': 12}p => 08-08 00:00:00 to 08-09 00:00:00 @ 12.0p, date None, day_of_week [], increment Falsep
2026-08-08 09:15:09.493201: AxleAPI: Fetched 1 total events from sensor binary_sensor.predbat_axle_event
2026-08-08 09:15:09.493423: Standing charge is set to 0.0p
2026-08-08 09:15:09.525134: Rate min forward looking: now 21.23p at end of forecast 21.23p
2026-08-08 09:15:09.525674: Import rates: min 21.23p, max 21.23p, average 21.23p
2026-08-08 09:15:09.536190: Setting Axle VPP session in range 08-05 21:00:00 - 08-05 22:00:00 export True pence_per_kwh 100
2026-08-08 09:15:09.538827: Export rates: min 12.0p, max 12.0p, average 12.0p
2026-08-08 09:15:09.538985: Rate thresholds (for charge/export) are import 21.33p (0.0p), export 11.9p (0.0p)
2026-08-08 09:15:09.596834: High export rate found rates in range 12.0p to 12.0p
2026-08-08 09:15:09.655393: Low Import rate found rates in range 21.23p to 21.23p
2026-08-08 09:15:09.655909: Battery level now 0.18kWh, -1hr ago 0.87kWh, at midnight 5.08kWh, battery value change in the last hour -15.66p, change today -111.69p, rate_forward 22.8p
2026-08-08 09:15:09.657121: Last hour: net energy -1.77kWh, import 0.0kWh, export 1.77kWh, car 0kWh, load 0.91kWh, net cost -21.25p, import 0.0p, export -21.25p, car 0.0p, carbon 0.0kg
2026-08-08 09:15:10.010323: Today's energy total net -2.11kWh, import 0.02kWh, export 2.13kWh, cost -25.14p, import 0.42p, export -25.56p, carbon 0.0kg
2026-08-08 09:15:10.183881: Using weighted-bucket historical load forecast over 7 days
2026-08-08 09:15:10.250634: Today's load divergence 99.05%, in-day adjustment 95.69%, damping 0.95x, yesterday 93.56% today 99.1% blend 61.46%
2026-08-08 09:15:10.250779: Today's predicted so far 4.96kWh with 0.0kWh car/iBoost excluded, 0kWh import ignored, and 4.96kWh forecast extra.
2026-08-08 09:15:10.250823: Today's actual load so far 4.79kWh with 0.71kWh car/iBoost excluded, and 0kWh import ignored.
2026-08-08 09:15:10.497546: Inverter 0: Type SIG Sigenergy Sigenstor
2026-08-08 09:15:10.497711: Note: Inverter 0: Using inverter type SIG - not all features are available on all Inverter types
2026-08-08 09:15:10.498158: Reserve min: 0%, battery_min: 0%
2026-08-08 09:15:10.498327: Inverter 0 with soc_max 18.08kWh, nominal_capacity 18.08kWh, battery rate raw 12000.0W, charge rate 12.0kW, charge rate DC 12.0kW, discharge rate 12.0kW, battery_rate_min 0.0W, AC limit 12.0kW, export limit 4.0kW, reserve 0%, current_reserve 0%, temperature 29°C
2026-08-08 09:15:10.498929: Inverter 0 SoC: 0.02kW 0%, current charge rate 12000W, current discharge rate 12600W, current battery power 1627W, current battery voltage 52.0V, grid power 3999W, load power 753W, PV Power 3144W
2026-08-08 09:15:10.499240: Inverter 0 write_and_poll_switch: No write needed for scheduled_charge_enable as False == False
2026-08-08 09:15:10.499385: Inverter 0 scheduled charge enable is False
2026-08-08 09:15:10.499431: Inverter 0 charge windows currently []
2026-08-08 09:15:10.499479: Inverter 0 Charge settings: timed charged is disabled, power 12.0kW
2026-08-08 09:15:10.499696: Inverter 0 write_and_poll_switch: No write needed for scheduled_discharge_enable as True == True
2026-08-08 09:15:10.499740: Inverter 0 sensor.predbat_SIG_0_scheduled_discharge_enable set to True
2026-08-08 09:15:10.499842: Inverter 0 scheduled discharge enable is True
2026-08-08 09:15:10.500078: Inverter 0 idle time is 08-08 17:01:00-08-08 23:59:00
2026-08-08 09:15:10.500134: Inverter 0 discharge windows currently [{'start': 545, 'end': 1021, 'average': 0}]
2026-08-08 09:15:10.500173: Note: Inverter does not support reserve - disabling reserve functions
2026-08-08 09:15:11.044209: Dynamic load last period 0.82kW, status low, threshold_battery 12.0kWh, threshold_car 6.0kWh,
2026-08-08 09:15:11.044434: Plan was last updated on 2026-08-08 09:05:00+01:00 and is now 10.0 minutes old
2026-08-08 09:15:11.044526: Best charge window [  ]
2026-08-08 09:15:11.044714: Best export window [ 08-08 09:05:00 - 08-08 17:00:00 @ 12.0p 0.0% ]
2026-08-08 09:15:11.046613: PV Forecast 92.4kWh and 10% Forecast 39.5kWh; PV cloud factor 0.3
2026-08-08 09:15:11.055639: Load divergence over 8.0 hours mean 1543.25W, min 643.2W, max 4281.6W, std dev 1055.62W, divergence 34.2%
2026-08-08 09:15:11.092176: Prediction kernel: enabled and active (loaded from /config/prediction_kernel_lib_aarch64.so)
2026-08-08 09:15:11.092581: Creating pool of 4 processes to match your CPU count
2026-08-08 09:15:11.229957: predict base end_record 08-09 15:15:00, final soc 18.08kWh, metric -549.91p, metric_keep 0kWh, min_soc 0.0kWh @ 08-08 09:15:00, load 30.26kWh, PV 95.27kWh
2026-08-08 09:15:12.388710: Battery has 0.0 hours left - now at 0.02kWh
2026-08-08 09:15:12.553735: predict base10 end_record 08-09 15:15:00, final soc 1.46kWh, metric -35.07p, metric_keep 0kWh, min_soc 0.0kWh @ 08-08 09:15:00, load 31.44kWh, PV 42.4kWh
2026-08-08 09:15:12.957558: predict best10 end_record 08-09 15:15:00, final soc 1.46kWh, metric -36.08p, metric_keep 0kWh, min_soc 0.0kWh @ 08-08 09:15:00, load 31.44kWh, PV 42.4kWh
2026-08-08 09:15:13.360348: predict best end_record 08-09 15:15:00, final soc 18.08kWh, metric -549.92p, metric_keep 0kWh, min_soc 0.0kWh @ 08-08 09:15:00, load 30.26kWh, PV 95.27kWh
2026-08-08 09:15:13.360485: Saving plan best values to HA entities
2026-08-08 09:15:14.672257: Evaluate trigger {'name': 'large', 'minutes': 60, 'energy': 1.0} results on total_energy 3.34
2026-08-08 09:15:14.730531: Evaluate trigger {'name': 'small', 'minutes': 15, 'energy': 0.25} results on total_energy 0.34
2026-08-08 09:15:14.789074: Best charging limit SoC's []kWh, export [0.0]kWh gives import battery 0kWh, house 0.04kWh, export 45.94kWh, metric -549.92p, metric10 -36.08p
2026-08-08 09:15:15.285831: Marginal costs baseline metric (no standing charge): -549.9178
2026-08-08 09:15:15.579673: Marginal energy costs matrix computed: min=4.33 max=17.09
2026-08-08 09:15:16.145079: Rate array import [{'start': 555, 'end': 2355, 'rate': 'fixed', 'range': '(21.2p)'}] export [{'start': 555, 'end': 2355, 'rate': 'fixed', 'range': '(12.0p)'}]
2026-08-08 09:15:16.145697: - Your estimated bill for today is £-4.32
2026-08-08 09:15:16.145756: - The battery is currently at 0% and is force exporting to 0.0% for the next 7 and three quarters hours.
2026-08-08 09:15:16.145787: - For the next 10 hours there will be a lot of solar generation and then it will decrease.
2026-08-08 09:15:16.145816: - No charging is planned.
2026-08-08 09:15:16.145844: 
2026-08-08 09:15:16.298717: Plan calculation took 5.25 seconds
2026-08-08 09:15:16.298901: Export threshold used for optimisation was 12.0p
2026-08-08 09:15:16.754047: High export rate windows [0: 08-08 09:00:00 - 08-08 09:30:00 @ 12.0, 1: 08-08 09:30:00 - 08-08 10:00:00 @ 12.0, 2: 08-08 10:00:00 - 08-08 10:30:00 @ 12.0, 3: 08-08 10:30:00 - 08-08 11:00:00 @ 12.0, 4: 08-08 11:00:00 - 08-08 11:30:00 @ 12.0, 5: 08-08 11:30:00 - 08-08 12:00:00 @ 12.0, 6: 08-08 12:00:00 - 08-08 12:30:00 @ 12.0, 7: 08-08 12:30:00 - 08-08 13:00:00 @ 12.0, 8: 08-08 13:00:00 - 08-08 13:30:00 @ 12.0, 9: 08-08 13:30:00 - 08-08 14:00:00 @ 12.0, 10: 08-08 14:00:00 - 08-08 14:30:00 @ 12.0, 11: 08-08 14:30:00 - 08-08 15:00:00 @ 12.0, 12: 08-08 15:00:00 - 08-08 15:30:00 @ 12.0, 13: 08-08 15:30:00 - 08-08 16:00:00 @ 12.0, 14: 08-08 16:00:00 - 08-08 16:30:00 @ 12.0, 15: 08-08 16:30:00 - 08-08 17:00:00 @ 12.0, 16: 08-08 17:00:00 - 08-08 17:30:00 @ 12.0, 17: 08-08 17:30:00 - 08-08 18:00:00 @ 12.0, 18: 08-08 18:00:00 - 08-08 18:30:00 @ 12.0, 19: 08-08 18:30:00 - 08-08 19:00:00 @ 12.0, 20: 08-08 19:00:00 - 08-08 19:30:00 @ 12.0, 21: 08-08 19:30:00 - 08-08 20:00:00 @ 12.0, 22: 08-08 20:00:00 - 08-08 20:30:00 @ 12.0, 23: 08-08 20:30:00 - 08-08 21:00:00 @ 12.0, 24: 08-08 21:00:00 - 08-08 21:30:00 @ 12.0, 25: 08-08 21:30:00 - 08-08 22:00:00 @ 12.0, 26: 08-08 22:00:00 - 08-08 22:30:00 @ 12.0, 27: 08-08 22:30:00 - 08-08 23:00:00 @ 12.0, 28: 08-08 23:00:00 - 08-08 23:30:00 @ 12.0, 29: 08-08 23:30:00 - 08-09 00:00:00 @ 12.0, 30: 08-09 00:00:00 - 08-09 00:30:00 @ 12.0, 31: 08-09 00:30:00 - 08-09 01:00:00 @ 12.0, 32: 08-09 01:00:00 - 08-09 01:30:00 @ 12.0, 33: 08-09 01:30:00 - 08-09 02:00:00 @ 12.0, 34: 08-09 02:00:00 - 08-09 02:30:00 @ 12.0, 35: 08-09 02:30:00 - 08-09 03:00:00 @ 12.0, 36: 08-09 03:00:00 - 08-09 03:30:00 @ 12.0, 37: 08-09 03:30:00 - 08-09 04:00:00 @ 12.0, 38: 08-09 04:00:00 - 08-09 04:30:00 @ 12.0, 39: 08-09 04:30:00 - 08-09 05:00:00 @ 12.0, 40: 08-09 05:00:00 - 08-09 05:30:00 @ 12.0, 41: 08-09 05:30:00 - 08-09 06:00:00 @ 12.0, 42: 08-09 06:00:00 - 08-09 06:30:00 @ 12.0, 43: 08-09 06:30:00 - 08-09 07:00:00 @ 12.0, 44: 08-09 07:00:00 - 08-09 07:30:00 @ 12.0, 45: 08-09 07:30:00 - 08-09 08:00:00 @ 12.0, 46: 08-09 08:00:00 - 08-09 08:30:00 @ 12.0, 47: 08-09 08:30:00 - 08-09 09:00:00 @ 12.0, 48: 08-09 09:00:00 - 08-09 09:30:00 @ 12.0, 49: 08-09 09:30:00 - 08-09 10:00:00 @ 12.0, 50: 08-09 10:00:00 - 08-09 10:30:00 @ 12.0, 51: 08-09 10:30:00 - 08-09 11:00:00 @ 12.0, 52: 08-09 11:00:00 - 08-09 11:30:00 @ 12.0, 53: 08-09 11:30:00 - 08-09 12:00:00 @ 12.0, 54: 08-09 12:00:00 - 08-09 12:30:00 @ 12.0, 55: 08-09 12:30:00 - 08-09 13:00:00 @ 12.0, 56: 08-09 13:00:00 - 08-09 13:30:00 @ 12.0, 57: 08-09 13:30:00 - 08-09 14:00:00 @ 12.0, 58: 08-09 14:00:00 - 08-09 14:30:00 @ 12.0, 59: 08-09 14:30:00 - 08-09 15:00:00 @ 12.0, 60: 08-09 15:00:00 - 08-09 15:30:00 @ 12.0]
2026-08-08 09:15:16.808922: Import threshold used for optimisation was 21.23p
2026-08-08 09:15:17.268443: Low import rate windows [0: 08-08 09:00:00 - 08-08 09:30:00 @ 21.23, 1: 08-08 09:30:00 - 08-08 10:00:00 @ 21.23, 2: 08-08 10:00:00 - 08-08 10:30:00 @ 21.23, 3: 08-08 10:30:00 - 08-08 11:00:00 @ 21.23, 4: 08-08 11:00:00 - 08-08 11:30:00 @ 21.23, 5: 08-08 11:30:00 - 08-08 12:00:00 @ 21.23, 6: 08-08 12:00:00 - 08-08 12:30:00 @ 21.23, 7: 08-08 12:30:00 - 08-08 13:00:00 @ 21.23, 8: 08-08 13:00:00 - 08-08 13:30:00 @ 21.23, 9: 08-08 13:30:00 - 08-08 14:00:00 @ 21.23, 10: 08-08 14:00:00 - 08-08 14:30:00 @ 21.23, 11: 08-08 14:30:00 - 08-08 15:00:00 @ 21.23, 12: 08-08 15:00:00 - 08-08 15:30:00 @ 21.23, 13: 08-08 15:30:00 - 08-08 16:00:00 @ 21.23, 14: 08-08 16:00:00 - 08-08 16:30:00 @ 21.23, 15: 08-08 16:30:00 - 08-08 17:00:00 @ 21.23, 16: 08-08 17:00:00 - 08-08 17:30:00 @ 21.23, 17: 08-08 17:30:00 - 08-08 18:00:00 @ 21.23, 18: 08-08 18:00:00 - 08-08 18:30:00 @ 21.23, 19: 08-08 18:30:00 - 08-08 19:00:00 @ 21.23, 20: 08-08 19:00:00 - 08-08 19:30:00 @ 21.23, 21: 08-08 19:30:00 - 08-08 20:00:00 @ 21.23, 22: 08-08 20:00:00 - 08-08 20:30:00 @ 21.23, 23: 08-08 20:30:00 - 08-08 21:00:00 @ 21.23, 24: 08-08 21:00:00 - 08-08 21:30:00 @ 21.23, 25: 08-08 21:30:00 - 08-08 22:00:00 @ 21.23, 26: 08-08 22:00:00 - 08-08 22:30:00 @ 21.23, 27: 08-08 22:30:00 - 08-08 23:00:00 @ 21.23, 28: 08-08 23:00:00 - 08-08 23:30:00 @ 21.23, 29: 08-08 23:30:00 - 08-09 00:00:00 @ 21.23, 30: 08-09 00:00:00 - 08-09 00:30:00 @ 21.23, 31: 08-09 00:30:00 - 08-09 01:00:00 @ 21.23, 32: 08-09 01:00:00 - 08-09 01:30:00 @ 21.23, 33: 08-09 01:30:00 - 08-09 02:00:00 @ 21.23, 34: 08-09 02:00:00 - 08-09 02:30:00 @ 21.23, 35: 08-09 02:30:00 - 08-09 03:00:00 @ 21.23, 36: 08-09 03:00:00 - 08-09 03:30:00 @ 21.23, 37: 08-09 03:30:00 - 08-09 04:00:00 @ 21.23, 38: 08-09 04:00:00 - 08-09 04:30:00 @ 21.23, 39: 08-09 04:30:00 - 08-09 05:00:00 @ 21.23, 40: 08-09 05:00:00 - 08-09 05:30:00 @ 21.23, 41: 08-09 05:30:00 - 08-09 06:00:00 @ 21.23, 42: 08-09 06:00:00 - 08-09 06:30:00 @ 21.23, 43: 08-09 06:30:00 - 08-09 07:00:00 @ 21.23, 44: 08-09 07:00:00 - 08-09 07:30:00 @ 21.23, 45: 08-09 07:30:00 - 08-09 08:00:00 @ 21.23, 46: 08-09 08:00:00 - 08-09 08:30:00 @ 21.23, 47: 08-09 08:30:00 - 08-09 09:00:00 @ 21.23, 48: 08-09 09:00:00 - 08-09 09:30:00 @ 21.23, 49: 08-09 09:30:00 - 08-09 10:00:00 @ 21.23, 50: 08-09 10:00:00 - 08-09 10:30:00 @ 21.23, 51: 08-09 10:30:00 - 08-09 11:00:00 @ 21.23, 52: 08-09 11:00:00 - 08-09 11:30:00 @ 21.23, 53: 08-09 11:30:00 - 08-09 12:00:00 @ 21.23, 54: 08-09 12:00:00 - 08-09 12:30:00 @ 21.23, 55: 08-09 12:30:00 - 08-09 13:00:00 @ 21.23, 56: 08-09 13:00:00 - 08-09 13:30:00 @ 21.23, 57: 08-09 13:30:00 - 08-09 14:00:00 @ 21.23, 58: 08-09 14:00:00 - 08-09 14:30:00 @ 21.23, 59: 08-09 14:30:00 - 08-09 15:00:00 @ 21.23, 60: 08-09 15:00:00 - 08-09 15:30:00 @ 21.23]
2026-08-08 09:15:17.390413: Inverter 0 No charge window yet, waiting for schedule.
2026-08-08 09:15:17.390672: Adjust idle time, charge 00:00:00-00:00:00 discharge 09:05:00-17:01:00
2026-08-08 09:15:17.391179: Adjust demand (idle) time computed is 17:01:00-23:59:00
2026-08-08 09:15:17.391460: Include original export start 08-08 09:05:00 with our start which is 08-08 09:05:00 (charge start 08-09 06:00:00 end 08-09 06:00:00)
2026-08-08 09:15:17.391580: Next export window will be: 2026-08-08 09:05:00+01:00 - 2026-08-08 17:01:00+01:00 at reserve 0.0
2026-08-08 09:15:17.391650: Exporting now - current SoC 0.018kWh and target 0.0kWh and power adjust 1.0
2026-08-08 09:15:17.391955: Inverter 0 Adjust force export to True, change times from 09:05:00 - 17:01:00 to 09:05:00 - 17:01:00
2026-08-08 09:15:17.392039: Adjust idle time, charge 00:00:00-00:00:00 discharge 09:05:00-17:01:00
2026-08-08 09:15:17.392364: Adjust demand (idle) time computed is 17:01:00-23:59:00
2026-08-08 09:15:17.392512: Inverter 0 write_and_poll_switch: No write needed for scheduled_discharge_enable as True == True
2026-08-08 09:15:17.392695: Inverter 0 adjust target SoC for export to 0% based on requested all inverter SoC 0%
2026-08-08 09:15:17.392787: Inverter 0 Current Target SoC is 0%, already at target
2026-08-08 09:15:17.393069: Inverter 0 Skipped service charge_stop_service domain charge service_name input_select.select_option as it was previously called.
2026-08-08 09:15:17.393171: Inverter 0 Calling service discharge_freeze_service domain discharge service_name input_select/select_option with data {'entity_id': 'input_select.predbat_requested_mode', 'option': 'Freeze Discharging'}

Log extract for a later Discharge slot:

2026-08-08 14:30:00.522137: --------------- PredBat - update at 2026-08-08 14:30:00+01:00 with clock skew 0 minutes, minutes now 870
2026-08-08 14:30:00.523857: Saved current settings to /addon_configs/6adb4f0d_predbat/predbat_config.json
2026-08-08 14:30:00.524228: Using cached GitHub data for https://api.github.com/repos/springfall2008/batpred/releases age 75.0 minutes
2026-08-08 14:30:00.524478: Predbat /config/github.py repository springfall2008/batpred version v8.47.5 currently running, latest version is v8.47.6, latest beta is v8.47.6
2026-08-08 14:30:00.524662: Autoupdate: There is an update pending v8.47.6 GECloud Timezone, Sigenergy Cloud Axle, New downloader - auto update is off
2026-08-08 14:30:00.718701: Configuration: forecast_hours 30, num_cars 0, debug enable is False, calculate_plan_every 10 minutes
2026-08-08 14:30:00.718944: days_previous_auto enabled - using weighted-bucket historical load forecast over up to 7 days
2026-08-08 14:30:00.719853: Predbat mode is set to Control charge & discharge
2026-08-08 14:30:01.535834: iBoost energy today from sensor reads 1.01 kWh
2026-08-08 14:30:02.354963: Found 11522 load_today datapoints going back 8 days
2026-08-08 14:30:02.355251: Using load_power data to fill gaps in load_today data
2026-08-08 14:30:07.688991: Processing 385 30-minute periods for power integration
2026-08-08 14:30:09.545465: Car charging hold True, threshold 6.0kWh
2026-08-08 14:30:09.546122: Current data so far today: load 10.39kWh, import 0.03kWh, export 17.55kWh, PV 32.19kWh
2026-08-08 14:30:09.546941: Adding rate rates_import: {'rate': 21.23}p => 08-08 00:00:00 to 08-09 00:00:00 @ 21.23p, date None, day_of_week [], increment Falsep
2026-08-08 14:30:09.553948: Adding rate rates_gas: {'rate': 5.48}p => 08-08 00:00:00 to 08-09 00:00:00 @ 5.48p, date None, day_of_week [], increment Falsep
2026-08-08 14:30:09.570441: Gas rates: min 5.48p, max 5.48p, average 5.48p
2026-08-08 14:30:09.597018: Adding rate rates_export: {'rate': 12}p => 08-08 00:00:00 to 08-09 00:00:00 @ 12.0p, date None, day_of_week [], increment Falsep
2026-08-08 14:30:09.603090: AxleAPI: Fetched 1 total events from sensor binary_sensor.predbat_axle_event
2026-08-08 14:30:09.603264: Standing charge is set to 0.0p
2026-08-08 14:30:09.635340: Rate min forward looking: now 21.23p at end of forecast 21.23p
2026-08-08 14:30:09.635861: Import rates: min 21.23p, max 21.23p, average 21.23p
2026-08-08 14:30:09.646073: Setting Axle VPP session in range 08-05 21:00:00 - 08-05 22:00:00 export True pence_per_kwh 100
2026-08-08 14:30:09.648753: Export rates: min 12.0p, max 12.0p, average 12.0p
2026-08-08 14:30:09.649240: Rate thresholds (for charge/export) are import 21.33p (0.0p), export 11.9p (0.0p)
2026-08-08 14:30:09.713525: High export rate found rates in range 12.0p to 12.0p
2026-08-08 14:30:09.779086: Low Import rate found rates in range 21.23p to 21.23p
2026-08-08 14:30:09.779307: Battery level now 8.68kWh, -1hr ago 1.83kWh, at midnight 5.08kWh, battery value change in the last hour 156.22p, change today 82.03p, rate_forward 22.8p
2026-08-08 14:30:09.780027: Last hour: net energy 0.0kWh, import 0.0kWh, export 0.0kWh, car 0kWh, load 0.8kWh, net cost 0.0p, import 0.0p, export 0.0p, car 0.0p, carbon 0.0kg
2026-08-08 14:30:10.142209: Today's energy total net -17.52kWh, import 0.03kWh, export 17.55kWh, cost -209.96p, import 0.64p, export -210.6p, carbon 0.0kg
2026-08-08 14:30:10.333019: Using weighted-bucket historical load forecast over 7 days
2026-08-08 14:30:10.412092: Today's load divergence 96.52%, in-day adjustment 95.46%, damping 0.95x, yesterday 93.56% today 96.7% blend 39.58%
2026-08-08 14:30:10.412327: Today's predicted so far 9.99kWh with 0.0kWh car/iBoost excluded, 0kWh import ignored, and 9.99kWh forecast extra.
2026-08-08 14:30:10.412574: Today's actual load so far 9.37kWh with 1.0kWh car/iBoost excluded, and 0kWh import ignored.
2026-08-08 14:30:10.803076: Inverter 0: Type SIG Sigenergy Sigenstor
2026-08-08 14:30:10.803253: Note: Inverter 0: Using inverter type SIG - not all features are available on all Inverter types
2026-08-08 14:30:10.803827: Reserve min: 0%, battery_min: 0%
2026-08-08 14:30:10.803997: Inverter 0 with soc_max 18.08kWh, nominal_capacity 18.08kWh, battery rate raw 12000.0W, charge rate 12.0kW, charge rate DC 12.0kW, discharge rate 12.0kW, battery_rate_min 0.0W, AC limit 12.0kW, export limit 4.0kW, reserve 0%, current_reserve 0%, temperature 37°C
2026-08-08 14:30:10.804555: Inverter 0 SoC: 9.24kW 51%, current charge rate 12000W, current discharge rate 12600W, current battery power -7021W, current battery voltage 52.0V, grid power -19W, load power 740W, PV Power 7792W
2026-08-08 14:30:10.804859: Inverter 0 write_and_poll_switch: No write needed for scheduled_charge_enable as False == False
2026-08-08 14:30:10.805013: Inverter 0 scheduled charge enable is False
2026-08-08 14:30:10.805074: Inverter 0 charge windows currently []
2026-08-08 14:30:10.805124: Inverter 0 Charge settings: timed charged is disabled, power 12.0kW
2026-08-08 14:30:10.805409: Inverter 0 write_and_poll_switch: No write needed for scheduled_discharge_enable as False == False
2026-08-08 14:30:10.805494: Inverter 0 sensor.predbat_SIG_0_scheduled_discharge_enable set to False
2026-08-08 14:30:10.805569: Inverter 0 scheduled discharge enable is False
2026-08-08 14:30:10.805821: Inverter 0 idle time is 08-08 13:35:00-08-08 23:59:00
2026-08-08 14:30:10.805863: Inverter 0 discharge windows currently []
2026-08-08 14:30:10.805899: Note: Inverter does not support reserve - disabling reserve functions
2026-08-08 14:30:13.799979: Dynamic load last period 0.86kW, status low, threshold_battery 12.0kWh, threshold_car 6.0kWh,
2026-08-08 14:30:13.800204: Plan was last updated on 2026-08-08 14:25:00+01:00 and is now 5.0 minutes old
2026-08-08 14:30:13.800295: Best charge window [  ]
2026-08-08 14:30:13.800583: Best export window [ 08-08 14:30:00 - 08-08 16:00:00 @ 12.0p 40.0%, 08-08 16:10:00 - 08-08 16:30:00 @ 12.0p 72.0% ]
2026-08-08 14:30:13.802608: PV Forecast 55.0kWh and 10% Forecast 29.5kWh; PV cloud factor 0.2
2026-08-08 14:30:13.813532: Load divergence over 8.0 hours mean 901.2W, min 512.4W, max 2571.6W, std dev 274.21W, divergence 15.21%
2026-08-08 14:30:13.848039: Prediction kernel: enabled and active (loaded from /config/prediction_kernel_lib_aarch64.so)
2026-08-08 14:30:13.848348: Creating pool of 4 processes to match your CPU count
2026-08-08 14:30:13.973659: predict base end_record 08-09 20:30:00, final soc 15.55kWh, metric -422.76p, metric_keep 0kWh, min_soc 9.21kWh @ 08-09 07:55:00, load 35.04kWh, PV 87.2kWh
2026-08-08 14:30:14.943094: Battery has 30.0 hours left - now at 9.24kWh
2026-08-08 14:30:15.103457: predict base10 end_record 08-09 20:30:00, final soc 4.74kWh, metric -259.97p, metric_keep 0kWh, min_soc 4.74kWh @ 08-09 20:25:00, load 36.22kWh, PV 61.72kWh
2026-08-08 14:30:15.504656: predict best10 end_record 08-09 20:30:00, final soc 2.52kWh, metric -289.93p, metric_keep 0kWh, min_soc 2.52kWh @ 08-09 20:25:00, load 36.22kWh, PV 61.72kWh
2026-08-08 14:30:15.903850: predict best end_record 08-09 20:30:00, final soc 15.55kWh, metric -447.22p, metric_keep 0kWh, min_soc 9.21kWh @ 08-09 07:55:00, load 35.04kWh, PV 87.2kWh
2026-08-08 14:30:15.903984: Saving plan best values to HA entities
2026-08-08 14:30:17.170802: Evaluate trigger {'name': 'large', 'minutes': 60, 'energy': 1.0} results on total_energy 4.0
2026-08-08 14:30:17.227285: Evaluate trigger {'name': 'small', 'minutes': 15, 'energy': 0.25} results on total_energy 1.0
2026-08-08 14:30:17.283021: Best charging limit SoC's []kWh, export [40.0, 72.0]kWh gives import battery 0kWh, house 0.0kWh, export 37.32kWh, metric -447.22p, metric10 -289.93p
2026-08-08 14:30:17.814181: Marginal costs baseline metric (no standing charge): -447.2179
2026-08-08 14:30:18.118486: Marginal energy costs matrix computed: min=11.69 max=12.75
2026-08-08 14:30:18.687329: Rate array import [{'start': 870, 'end': 2670, 'rate': 'fixed', 'range': '(21.2p)'}] export [{'start': 870, 'end': 2670, 'rate': 'fixed', 'range': '(12.0p)'}]
2026-08-08 14:30:18.687974: - Your estimated bill for today is £-3.44
2026-08-08 14:30:18.688025: - The battery is currently at 51% and is force exporting to 52% for the next 1 and a half hours.
2026-08-08 14:30:18.688055: - For the next 4 and a half hours there will be a lot of solar generation and then it will decrease.
2026-08-08 14:30:18.688083: - You will reach a minimum of 51% battery in 17 hours.
2026-08-08 14:30:18.688141: - No charging is planned.
2026-08-08 14:30:18.688169: 
2026-08-08 14:30:18.854085: Plan calculation took 5.05 seconds
2026-08-08 14:30:18.854236: Export threshold used for optimisation was 12.0p
2026-08-08 14:30:19.340197: High export rate windows [0: 08-08 14:30:00 - 08-08 15:00:00 @ 12.0, 1: 08-08 15:00:00 - 08-08 15:30:00 @ 12.0, 2: 08-08 15:30:00 - 08-08 16:00:00 @ 12.0, 3: 08-08 16:00:00 - 08-08 16:30:00 @ 12.0, 4: 08-08 16:30:00 - 08-08 17:00:00 @ 12.0, 5: 08-08 17:00:00 - 08-08 17:30:00 @ 12.0, 6: 08-08 17:30:00 - 08-08 18:00:00 @ 12.0, 7: 08-08 18:00:00 - 08-08 18:30:00 @ 12.0, 8: 08-08 18:30:00 - 08-08 19:00:00 @ 12.0, 9: 08-08 19:00:00 - 08-08 19:30:00 @ 12.0, 10: 08-08 19:30:00 - 08-08 20:00:00 @ 12.0, 11: 08-08 20:00:00 - 08-08 20:30:00 @ 12.0, 12: 08-08 20:30:00 - 08-08 21:00:00 @ 12.0, 13: 08-08 21:00:00 - 08-08 21:30:00 @ 12.0, 14: 08-08 21:30:00 - 08-08 22:00:00 @ 12.0, 15: 08-08 22:00:00 - 08-08 22:30:00 @ 12.0, 16: 08-08 22:30:00 - 08-08 23:00:00 @ 12.0, 17: 08-08 23:00:00 - 08-08 23:30:00 @ 12.0, 18: 08-08 23:30:00 - 08-09 00:00:00 @ 12.0, 19: 08-09 00:00:00 - 08-09 00:30:00 @ 12.0, 20: 08-09 00:30:00 - 08-09 01:00:00 @ 12.0, 21: 08-09 01:00:00 - 08-09 01:30:00 @ 12.0, 22: 08-09 01:30:00 - 08-09 02:00:00 @ 12.0, 23: 08-09 02:00:00 - 08-09 02:30:00 @ 12.0, 24: 08-09 02:30:00 - 08-09 03:00:00 @ 12.0, 25: 08-09 03:00:00 - 08-09 03:30:00 @ 12.0, 26: 08-09 03:30:00 - 08-09 04:00:00 @ 12.0, 27: 08-09 04:00:00 - 08-09 04:30:00 @ 12.0, 28: 08-09 04:30:00 - 08-09 05:00:00 @ 12.0, 29: 08-09 05:00:00 - 08-09 05:30:00 @ 12.0, 30: 08-09 05:30:00 - 08-09 06:00:00 @ 12.0, 31: 08-09 06:00:00 - 08-09 06:30:00 @ 12.0, 32: 08-09 06:30:00 - 08-09 07:00:00 @ 12.0, 33: 08-09 07:00:00 - 08-09 07:30:00 @ 12.0, 34: 08-09 07:30:00 - 08-09 08:00:00 @ 12.0, 35: 08-09 08:00:00 - 08-09 08:30:00 @ 12.0, 36: 08-09 08:30:00 - 08-09 09:00:00 @ 12.0, 37: 08-09 09:00:00 - 08-09 09:30:00 @ 12.0, 38: 08-09 09:30:00 - 08-09 10:00:00 @ 12.0, 39: 08-09 10:00:00 - 08-09 10:30:00 @ 12.0, 40: 08-09 10:30:00 - 08-09 11:00:00 @ 12.0, 41: 08-09 11:00:00 - 08-09 11:30:00 @ 12.0, 42: 08-09 11:30:00 - 08-09 12:00:00 @ 12.0, 43: 08-09 12:00:00 - 08-09 12:30:00 @ 12.0, 44: 08-09 12:30:00 - 08-09 13:00:00 @ 12.0, 45: 08-09 13:00:00 - 08-09 13:30:00 @ 12.0, 46: 08-09 13:30:00 - 08-09 14:00:00 @ 12.0, 47: 08-09 14:00:00 - 08-09 14:30:00 @ 12.0, 48: 08-09 14:30:00 - 08-09 15:00:00 @ 12.0, 49: 08-09 15:00:00 - 08-09 15:30:00 @ 12.0, 50: 08-09 15:30:00 - 08-09 16:00:00 @ 12.0, 51: 08-09 16:00:00 - 08-09 16:30:00 @ 12.0, 52: 08-09 16:30:00 - 08-09 17:00:00 @ 12.0, 53: 08-09 17:00:00 - 08-09 17:30:00 @ 12.0, 54: 08-09 17:30:00 - 08-09 18:00:00 @ 12.0, 55: 08-09 18:00:00 - 08-09 18:30:00 @ 12.0, 56: 08-09 18:30:00 - 08-09 19:00:00 @ 12.0, 57: 08-09 19:00:00 - 08-09 19:30:00 @ 12.0, 58: 08-09 19:30:00 - 08-09 20:00:00 @ 12.0, 59: 08-09 20:00:00 - 08-09 20:30:00 @ 12.0]
2026-08-08 14:30:19.399283: Import threshold used for optimisation was 21.23p
2026-08-08 14:30:19.866911: Low import rate windows [0: 08-08 14:30:00 - 08-08 15:00:00 @ 21.23, 1: 08-08 15:00:00 - 08-08 15:30:00 @ 21.23, 2: 08-08 15:30:00 - 08-08 16:00:00 @ 21.23, 3: 08-08 16:00:00 - 08-08 16:30:00 @ 21.23, 4: 08-08 16:30:00 - 08-08 17:00:00 @ 21.23, 5: 08-08 17:00:00 - 08-08 17:30:00 @ 21.23, 6: 08-08 17:30:00 - 08-08 18:00:00 @ 21.23, 7: 08-08 18:00:00 - 08-08 18:30:00 @ 21.23, 8: 08-08 18:30:00 - 08-08 19:00:00 @ 21.23, 9: 08-08 19:00:00 - 08-08 19:30:00 @ 21.23, 10: 08-08 19:30:00 - 08-08 20:00:00 @ 21.23, 11: 08-08 20:00:00 - 08-08 20:30:00 @ 21.23, 12: 08-08 20:30:00 - 08-08 21:00:00 @ 21.23, 13: 08-08 21:00:00 - 08-08 21:30:00 @ 21.23, 14: 08-08 21:30:00 - 08-08 22:00:00 @ 21.23, 15: 08-08 22:00:00 - 08-08 22:30:00 @ 21.23, 16: 08-08 22:30:00 - 08-08 23:00:00 @ 21.23, 17: 08-08 23:00:00 - 08-08 23:30:00 @ 21.23, 18: 08-08 23:30:00 - 08-09 00:00:00 @ 21.23, 19: 08-09 00:00:00 - 08-09 00:30:00 @ 21.23, 20: 08-09 00:30:00 - 08-09 01:00:00 @ 21.23, 21: 08-09 01:00:00 - 08-09 01:30:00 @ 21.23, 22: 08-09 01:30:00 - 08-09 02:00:00 @ 21.23, 23: 08-09 02:00:00 - 08-09 02:30:00 @ 21.23, 24: 08-09 02:30:00 - 08-09 03:00:00 @ 21.23, 25: 08-09 03:00:00 - 08-09 03:30:00 @ 21.23, 26: 08-09 03:30:00 - 08-09 04:00:00 @ 21.23, 27: 08-09 04:00:00 - 08-09 04:30:00 @ 21.23, 28: 08-09 04:30:00 - 08-09 05:00:00 @ 21.23, 29: 08-09 05:00:00 - 08-09 05:30:00 @ 21.23, 30: 08-09 05:30:00 - 08-09 06:00:00 @ 21.23, 31: 08-09 06:00:00 - 08-09 06:30:00 @ 21.23, 32: 08-09 06:30:00 - 08-09 07:00:00 @ 21.23, 33: 08-09 07:00:00 - 08-09 07:30:00 @ 21.23, 34: 08-09 07:30:00 - 08-09 08:00:00 @ 21.23, 35: 08-09 08:00:00 - 08-09 08:30:00 @ 21.23, 36: 08-09 08:30:00 - 08-09 09:00:00 @ 21.23, 37: 08-09 09:00:00 - 08-09 09:30:00 @ 21.23, 38: 08-09 09:30:00 - 08-09 10:00:00 @ 21.23, 39: 08-09 10:00:00 - 08-09 10:30:00 @ 21.23, 40: 08-09 10:30:00 - 08-09 11:00:00 @ 21.23, 41: 08-09 11:00:00 - 08-09 11:30:00 @ 21.23, 42: 08-09 11:30:00 - 08-09 12:00:00 @ 21.23, 43: 08-09 12:00:00 - 08-09 12:30:00 @ 21.23, 44: 08-09 12:30:00 - 08-09 13:00:00 @ 21.23, 45: 08-09 13:00:00 - 08-09 13:30:00 @ 21.23, 46: 08-09 13:30:00 - 08-09 14:00:00 @ 21.23, 47: 08-09 14:00:00 - 08-09 14:30:00 @ 21.23, 48: 08-09 14:30:00 - 08-09 15:00:00 @ 21.23, 49: 08-09 15:00:00 - 08-09 15:30:00 @ 21.23, 50: 08-09 15:30:00 - 08-09 16:00:00 @ 21.23, 51: 08-09 16:00:00 - 08-09 16:30:00 @ 21.23, 52: 08-09 16:30:00 - 08-09 17:00:00 @ 21.23, 53: 08-09 17:00:00 - 08-09 17:30:00 @ 21.23, 54: 08-09 17:30:00 - 08-09 18:00:00 @ 21.23, 55: 08-09 18:00:00 - 08-09 18:30:00 @ 21.23, 56: 08-09 18:30:00 - 08-09 19:00:00 @ 21.23, 57: 08-09 19:00:00 - 08-09 19:30:00 @ 21.23, 58: 08-09 19:30:00 - 08-09 20:00:00 @ 21.23, 59: 08-09 20:00:00 - 08-09 20:30:00 @ 21.23]
2026-08-08 14:30:19.986860: Inverter 0 No charge window yet, waiting for schedule.
2026-08-08 14:30:19.987124: Adjust idle time, charge 00:00:00-00:00:00 discharge 00:00:00-00:00:00
2026-08-08 14:30:19.987655: Adjust demand (idle) time computed is 13:35:00-23:59:00
2026-08-08 14:30:19.987895: Next export window will be: 2026-08-08 14:30:00+01:00 - 2026-08-08 16:01:00+01:00 at reserve 40.0
2026-08-08 14:30:19.987972: Exporting now - current SoC 9.239kWh and target 7.23kWh and power adjust 1.0
2026-08-08 14:30:19.988304: Inverter 0 Adjust force export to True, change times from 00:00:00 - 00:00:00 to 14:30:00 - 16:01:00
2026-08-08 14:30:19.988379: Adjust idle time, charge 00:00:00-00:00:00 discharge 14:30:00-16:01:00
2026-08-08 14:30:19.988707: Adjust demand (idle) time computed is 16:01:00-23:59:00
2026-08-08 14:30:19.988824: Inverter 0 set new demand (idle) start time to 16:01:00 was 13:35:00
2026-08-08 14:30:24.044427: Inverter 0 write_and_poll_value: Wrote 16:01:00 to idle_start_time, successfully now 16:01:00
2026-08-08 14:30:24.044643: Inverter 0 set new export start time to 14:30:00
2026-08-08 14:30:28.116873: Inverter 0 write_and_poll_value: Wrote 14:30:00 to discharge_start_time, successfully now 14:30:00
2026-08-08 14:30:28.117131: Inverter 0 Set new export end time to 16:01:00 was 00:00:00
2026-08-08 14:30:29.456632: AxleAPI: Fetching latest VPP event data
2026-08-08 14:30:29.631181: AxleAPI: No scheduled event
2026-08-08 14:30:32.180477: Inverter 0 write_and_poll_value: Wrote 16:01:00 to discharge_end_time, successfully now 16:01:00
2026-08-08 14:30:36.242019: Inverter 0 Wrote scheduled_discharge_enable to True successfully and got on
2026-08-08 14:30:36.242250: Inverter 0 Turning on scheduled export
2026-08-08 14:30:36.242352: Sleeping (workaround) as start/end of discharge window was just adjusted
2026-08-08 14:31:06.242712: Inverter 0 current mode is Eco and new target is Timed Export has_ge_eco_toggle False
2026-08-08 14:31:10.305000: Inverter 0 write_and_poll_value: Wrote Timed Export to inverter_mode, successfully now Timed Export
2026-08-08 14:31:10.305228: Inverter 0 set force export to True
2026-08-08 14:31:10.305649: Inverter 0 adjust target SoC for charge to 40% (7.23kWh/18.08kWh 18.08kWh) based on going from 51% -> 40% total add is -2.01kWh and this battery needs to add -2.01kWh to get to 7.23kWh
2026-08-08 14:31:10.305809: Inverter 0 Current charge limit is 0% and new target is 40%
2026-08-08 14:31:14.365066: Inverter 0 write_and_poll_value: Wrote 40 to charge_limit, successfully now 40.0
2026-08-08 14:31:14.365346: Current SoC 51% is greater than Target SoC 40. Grid Discharge enabled.
2026-08-08 14:31:14.365706: Inverter 0 Skipped service charge_stop_service domain charge service_name input_select.select_option as it was previously called.
2026-08-08 14:31:14.365816: Inverter 0 Calling service discharge_start_service domain discharge service_name input_select/select_option with data {'entity_id': 'input_select.predbat_requested_mode', 'option': 'Discharging'}

predbat.log

Predbat debug yaml file
This is important for any plan related issues.

predbat_debug.yaml.txt

[chalfontchubby]

Thanks for the detailed report and logs - dug into this properly.

On "Freeze Discharging despite the switch being off": confirmed the root cause, and it's not the optimiser deliberately choosing that state - it's falling into it by accident. When your export target lands at 0% and your battery is also already at 0%, adjust_export_immediate() (inverter.py) treats "target equals current SoC" as its own independent trigger for discharge_freeze_service, completely regardless of your switch.predbat_set_export_freeze setting. The code path that's supposed to respect that switch (execute.py) does so correctly and never asks for freeze here - the bug is one level down, in a mechanical "nothing left to discharge" fallback that happens to reuse the same "Freeze Discharging" label your disabled feature would use. We think this is a real, fixable bug, and we'll follow up separately once confirmed.

On the deeper question (battery not charging to absorb PV above your export limit): this one needs more work before we can say confidently whether it's a Predbat bug, a config gap, or a genuine Sigenergy hardware limitation. Predbat's planning model does have logic that assumes a battery can charge from PV that exceeds the export cap while still in an export window (gated on inverter_can_charge_during_export, which is true in your config) - but we've never confirmed that assumption against real Sigenergy hardware ourselves. I can't reproduce your exact scenario on my own system (not enough solar to exceed my own export limit), but I'm going to poke at our own Sigenergy setup a bit to see what we can learn, even at smaller scale.

A couple of things that would help:

1. Your apps.yaml (or the relevant Predbat/inverter section of it) - particularly interested in your inverter service templates and any Remote EMS / EMS-mode automation you have mapping input_select.predbat_requested_mode onto Sigenergy control, since that's genuinely outside anything a debug.yaml captures and matters a lot here.
2. If you're able to, a debug.yaml captured just before the clipping period starts (i.e. while the plan is still a prediction, not yet reality) rather than only during/after. A debug.yaml only lets us debug the plan at the moment it's captured - by the time clipping is already visible on your dashboard, the interesting decision (should we have planned to charge here) has already been made and isn't fully reconstructable after the fact from a later snapshot.

@springfall2008 - separately, worth mentioning: there's a rolling debug-history buffer in progress (#4438) that would help a lot with exactly this class of issue - it keeps a retained window of past debug snapshots automatically, so there's no need to catch debug mode at the right moment. There's also a SoC-forecast-drift chart built on top of it (not its own PR yet, gated behind #4438 landing first) that shows how the predicted future SoC curve looked at each past planning cycle, overlaid against what actually happened. Would make "was this predicted or was it a surprise" questions like this one much easier to answer after the fact rather than needing to catch it live.

[araines]

In terms of apps.yaml, here is the inverter section:

  inverter_type: "SIG"
  num_inverters: 1

  load_today:
  - sensor.sigen_plant_daily_load_consumption
  import_today:
  - sensor.sigen_plant_daily_grid_import_energy
  export_today:
  - sensor.sigen_plant_daily_grid_export_energy
  pv_today:
  - sensor.sigen_plant_daily_pv_energy

  charge_rate:
  - input_number.charge_rate
  discharge_rate:
  - input_number.discharge_rate
  battery_power:
  - sensor.sigen_plant_battery_power
  pv_power:
  - sensor.sigen_plant_pv_power
  load_power:
  - sensor.sigen_plant_consumed_power
  grid_power:
  - sensor.sigen_plant_grid_active_power

  battery_power_invert: true
  grid_power_invert: true

  soc_percent:
  - sensor.sigen_plant_battery_state_of_charge
  soc_kw:
  - sensor.sigen_plant_available_max_discharging_capacity
  soc_max:
  - sensor.sigen_plant_rated_energy_capacity
  battery_temperature:
  - sensor.sigen_inverter_battery_average_cell_temperature
  battery_min_soc:
  - 0
  reserve:
  - number.sigen_plant_ess_discharge_cut_off_state_of_charge
  charge_limit:
  - number.sigen_plant_ess_charge_cut_off_state_of_charge

  charge_start_service:
  - service: input_select.select_option
    entity_id: input_select.predbat_requested_mode
    option: "Charging"
  charge_stop_service:
  - service: input_select.select_option
    entity_id: input_select.predbat_requested_mode
    option: "Demand"
  discharge_start_service:
  - service: input_select.select_option
    entity_id: input_select.predbat_requested_mode
    option: "Discharging"
  charge_freeze_service:
  - service: input_select.select_option
    entity_id: input_select.predbat_requested_mode
    option: "Freeze Charging"
  discharge_freeze_service:
  - service: input_select.select_option
    entity_id: input_select.predbat_requested_mode
    option: "Freeze Discharging"

  inverter_limit:
  - sensor.sigen_plant_available_max_active_power

  battery_rate_max:
  - sensor.sigen_plant_available_max_active_power

  export_limit:
  - 4000

And automation:

alias: Predbat Requested Mode Action
description: >-
  Acts as a mapper for the input_select.predbat_requested_mode to the
  select.sigen_plant_remote_ems_control_mode
triggers:
  - trigger: state
    entity_id:
      - input_select.predbat_requested_mode
conditions: []
actions:
  - action: select.select_option
    metadata: {}
    target:
      entity_id: select.sigen_plant_remote_ems_control_mode
    data:
      option: >
        {% if is_state('input_select.predbat_requested_mode', "Demand")
        %}Maximum Self Consumption {% elif
        is_state('input_select.predbat_requested_mode', "Charging") %}Command
        Charging (PV First) {% elif
        is_state('input_select.predbat_requested_mode', "Freeze Charging")
        %}Maximum Self Consumption {% elif
        is_state('input_select.predbat_requested_mode', "Discharging") %}Command
        Discharging (PV First) {% elif
        is_state('input_select.predbat_requested_mode', "Freeze Discharging")
        %}Maximum Self Consumption {% endif %}
  - choose:
      - conditions:
          - condition: state
            entity_id: input_select.predbat_requested_mode
            state: Freeze Charging
        sequence:
          - action: number.set_value
            target:
              entity_id: number.sigen_plant_ess_charge_cut_off_state_of_charge
            data:
              value: 100
          - action: number.set_value
            target:
              entity_id: number.sigen_plant_ess_discharge_cut_off_state_of_charge
            data:
              value: 100
          - action: number.set_value
            target:
              entity_id: number.sigen_plant_grid_import_limitation
            data:
              value: 0
      - conditions:
          - condition: state
            entity_id: input_select.predbat_requested_mode
            state: Freeze Discharging
        sequence:
          - action: number.set_value
            target:
              entity_id: number.sigen_plant_ess_charge_cut_off_state_of_charge
            data:
              value: 0
          - action: number.set_value
            target:
              entity_id: number.sigen_plant_ess_discharge_cut_off_state_of_charge
            data:
              value: 0
          - action: number.set_value
            target:
              entity_id: number.sigen_plant_grid_import_limitation
            data:
              value: 0
      - conditions:
          - condition: not
            conditions:
              - condition: state
                entity_id: input_select.predbat_requested_mode
                state: Freeze Charging
              - condition: state
                entity_id: input_select.predbat_requested_mode
                state: Freeze Discharging
        sequence:
          - action: number.set_value
            target:
              entity_id: number.sigen_plant_ess_charge_cut_off_state_of_charge
            data:
              value: 100
          - action: number.set_value
            target:
              entity_id: number.sigen_plant_ess_discharge_cut_off_state_of_charge
            data:
              value: 0
          - action: number.set_value
            target:
              entity_id: number.sigen_plant_grid_import_limitation
            data:
              value: 100
mode: restart

I don't have the debug.yaml from before it happened, and I haven't seen this before so I suspect I won't be able to capture one either.

Regarding the behaviour of the Sigenergy system, I'm more than happy to do a load of exploration on this to help develop predbat. Let me know what is useful to know, and I'll look in to it.

[chalfontchubby]

Mode = restart? Thats a new one on me.

Do you have sigeng.plant_remote_ems_control set? I've had it off some of the time - currently running with it on and it getting reasonable results - bit of extra automation I'll document for some of the freeze modes.

[chalfontchubby]

Thanks for posting both of those — really helpful. A few things stand out.

Your automation matches the standard template exactly. Your apps.yaml inverter section is byte-for-byte the same as templates/sigenergy_sigenstor.yaml, and your Predbat Requested Mode Action automation uses the same charge_cut_off/discharge_cut_off/grid_import_limitation mechanism as the community template pattern generally (mine included) — so this isn't a config mistake on your end, it's the shared approach, which also means whatever we find here is likely to affect more than just your system.

A concrete hypothesis for the "won't charge from surplus solar" half of this. We already have a confirmed bug in the opposite direction: setting discharge_cut_off_state_of_charge above current SoC doesn't just cap discharge, it makes the inverter actively import from grid to climb up to that value (this is what PR #4392 fixed, on the Freeze Charging side, by pinning the cut-off to current SoC instead of leaving it stale). Your Freeze Discharging branch does the mirror-image thing: it sets charge_cut_off_state_of_charge to a hardcoded 0, which — by the same mechanism — could plausibly make the inverter actively discharge/export to chase that value down, rather than just capping charging. That was flagged as a suspected-but-never-confirmed symmetric bug when we fixed the charge-side one back in July/August, specifically because nobody had a live system in the right state to test it.

If that's what's happening, it would explain both halves of what you're seeing in one go: "Freeze Discharging" wouldn't be freezing anything — it'd be actively driving SoC toward 0 in the background, which would also explain why surplus solar wasn't visibly recharging the battery (it's fighting an active forced-discharge, not just declining to opportunistically charge).

A safe, reversible test, if you're up for it:

1. Note your current SoC (say it's X%).
2. Make sure Predbat Requested Mode Action isn't about to fire again mid-test (easiest: do this while the mode is sitting at Demand, so nothing else is writing these entities at the same moment).
3. Manually set number.sigen_plant_ess_charge_cut_off_state_of_charge to something clearly below current SoC — X minus 10 is plenty, no need to go all the way to 0.
4. Watch Battery Power (and SoC) for the next 5–10 minutes.
   • If the battery starts actively discharging/exporting beyond what your load alone would explain, tracking down toward the new cut-off and stopping there — that confirms the mirror bug.
   • If nothing changes beyond normal load-driven drift — that rules it out, and charge_cut_off really is just a passive ceiling.
5. Set it back to 100 (or whatever your automation's normal running value is) straight after, regardless of the result.

It's bounded and self-reverting either way (worst case it stops discharging once it hits your chosen cut-off, which you control), and it directly answers a question that's been open since the charge-side bug was fixed with nobody able to test the other direction. If you're willing to run it and note the timestamps, that'd be genuinely useful — happy to help read the resulting history chart afterwards.

[araines]

Yes, switch.sigen_plant_remote_ems_controlled_by_home_assistant is on.

Tested:
Starting SoC 54.5%
Set number.sigen_plant_ess_charge_cut_off_state_of_charge to 50%.
Waited and observed for 5 minutes.
Battery continued to discharge only to cover load (no import, no export).

[chalfontchubby]

Sharing a related data point from my own system tonight, since it's relevant to the "who's actually in control of the Sigenergy plant" theme running through this issue.

What happened: switch.sigen_plant_remote_ems_controlled_by_home_assistant went from on to off on its own, ~30 minutes before an Axle VPP event I was participating in (via Axle's "Event Only" mode). Nothing in Home Assistant caused it - no automation I have writes to that switch, and Predbat's own execution path never touches it either. When I flipped it back on manually mid-event, the plant settled into Maximum Self Consumption instead of the Command Discharging (PV First) Predbat still thought was active, and I ended up missing the back half of the event.

Got an email from Axle afterwards confirming the shape of it: "If you're on Event Only mode, we will have tried to automatically revert your battery settings back to normal. Please check your settings as we're not always able to reset these remotely." So this looks like an expected (if imperfectly-executed) part of how Axle's Event Only tier works — they take the Remote EMS claim directly during a dispatch, through some channel entirely outside Predbat/HA, and try to hand it back after.

Two things worth noting for anyone else combining Axle + Sigenergy:

1. Predbat's axle_control setting doesn't cover this at all - it only governs whether Predbat itself stands down during an Axle session (set_read_only_axle in fetch.py/execute.py). It has no bearing on Axle's own platform independently reaching the inverter through a separate authorisation (mine's set to the default false, and Predbat correctly kept trying to drive the plant the whole time - it just wasn't the only thing touching it).
2. If you're running the community Predbat_Requested_Mode_Action-style automation (mapping input_select.predbat_requested_mode to your Sigenergy EMS mode), it's worth adding a second trigger on your Remote-EMS-enable switch turning back on, re-asserting whatever the requested mode currently is. The automation only reacts to changes in predbat_requested_mode, which usually hasn't changed across an external control gap like this - so recovery of the switch alone doesn't recover the correct mode, and the plant sits on whatever it defaults to until Predbat's plan next transitions naturally. Added that, plus a small failsafe that forces Remote EMS back on 5 minutes after binary_sensor.predbat_axle_event clears, in case Axle's own revert doesn't land.

Not proposing any Predbat code change from this - the actual control handoff is happening outside anything Predbat can see or influence - just flagging it since it's a real, reproducible gotcha for anyone on Axle's Event Only tier with a Sigenergy system, and ties into why "who's in control right now" keeps coming up in this thread.

[araines]

OK so it happened again today. I've actually since adjusted my input_number.predbat_set_reserve_min to 0.3%.

Today, once the battery SoC hit 0.5% it switched from Export to Freeze Export.

I manually changed it to Export (rather than Freeze Export) at 10:47 - that was not predbat.

predbat.log

I've attached another log extract for the time period.

2026-08-10 09:25:00.944333: --------------- PredBat - update at 2026-08-10 09:25:00+01:00 with clock skew 0 minutes, minutes now 565
2026-08-10 09:25:00.946953: Saved current settings to /addon_configs/6adb4f0d_predbat/predbat_config.json
2026-08-10 09:25:00.947324: Using cached GitHub data for https://api.github.com/repos/springfall2008/batpred/releases age 85.0 minutes
2026-08-10 09:25:00.947528: Predbat /config/github.py repository springfall2008/batpred version v8.47.7 currently running, latest version is v8.47.7, latest beta is v8.47.7
2026-08-10 09:25:00.947756: Autoupdate: Currently up to date
2026-08-10 09:25:01.116898: Configuration: forecast_hours 30, num_cars 0, debug enable is False, calculate_plan_every 10 minutes
2026-08-10 09:25:01.117180: days_previous_auto enabled - using weighted-bucket historical load forecast over up to 7 days
2026-08-10 09:25:01.118329: Predbat mode is set to Control charge & discharge
2026-08-10 09:25:01.929192: iBoost energy today from sensor reads 1.86 kWh
2026-08-10 09:25:02.615726: Found 11522 load_today datapoints going back 8 days
2026-08-10 09:25:02.616016: Using load_power data to fill gaps in load_today data
2026-08-10 09:25:06.976606: AxleAPI: Fetching latest VPP event data
2026-08-10 09:25:07.514591: AxleAPI: No scheduled event
2026-08-10 09:25:08.241965: Processing 385 30-minute periods for power integration
2026-08-10 09:25:10.128760: Car charging hold True, threshold 6.0kWh
2026-08-10 09:25:10.129380: Current data so far today: load 7.81kWh, import 0.13kWh, export 2.25kWh, PV 3.29kWh
2026-08-10 09:25:10.130937: Adding rate rates_import: {'rate': 21.23}p => 08-10 00:00:00 to 08-11 00:00:00 @ 21.23p, date None, day_of_week [], increment Falsep
2026-08-10 09:25:10.138535: Adding rate rates_gas: {'rate': 5.48}p => 08-10 00:00:00 to 08-11 00:00:00 @ 5.48p, date None, day_of_week [], increment Falsep
2026-08-10 09:25:10.155716: Gas rates: min 5.48p, max 5.48p, average 5.48p
2026-08-10 09:25:10.184699: Adding rate rates_export: {'rate': 12}p => 08-10 00:00:00 to 08-11 00:00:00 @ 12.0p, date None, day_of_week [], increment Falsep
2026-08-10 09:25:10.191555: AxleAPI: Fetched 1 total events from sensor binary_sensor.predbat_axle_event
2026-08-10 09:25:10.191996: Standing charge is set to 0.0p
2026-08-10 09:25:10.228119: Rate min forward looking: now 21.23p at end of forecast 21.23p
2026-08-10 09:25:10.228599: Import rates: min 21.23p, max 21.23p, average 21.23p
2026-08-10 09:25:10.239922: Setting Axle VPP session in range 08-05 21:00:00 - 08-05 22:00:00 export True pence_per_kwh 100
2026-08-10 09:25:10.242645: Export rates: min 12.0p, max 12.0p, average 12.0p
2026-08-10 09:25:10.242809: Rate thresholds (for charge/export) are import 21.33p (0.0p), export 11.9p (0.0p)
2026-08-10 09:25:10.301283: High export rate found rates in range 12.0p to 12.0p
2026-08-10 09:25:10.361926: Low Import rate found rates in range 21.23p to 21.23p
2026-08-10 09:25:10.362187: Battery level now 0.42kWh, -1hr ago 0.11kWh, at midnight 6.49kWh, battery value change in the last hour 7.02p, change today -138.5p, rate_forward 22.8p
2026-08-10 09:25:10.362987: Last hour: net energy -0.75kWh, import 0.13kWh, export 0.88kWh, car 0kWh, load 1.96kWh, net cost -7.84p, import 2.76p, export -10.6p, car 0.0p, carbon 0.0kg
2026-08-10 09:25:10.989788: Today's energy total net -2.12kWh, import 0.13kWh, export 2.25kWh, cost -24.24p, import 2.76p, export -27.0p, carbon 0.0kg
2026-08-10 09:25:11.196396: Using weighted-bucket historical load forecast over 7 days
2026-08-10 09:25:11.264561: Today's load divergence 105.47%, in-day adjustment 105.48%, damping 0.95x, yesterday 105.67% today 105.2% blend 60.76%
2026-08-10 09:25:11.264711: Today's predicted so far 4.95kWh with 0.0kWh car/iBoost excluded, 0kWh import ignored, and 4.95kWh forecast extra.
2026-08-10 09:25:11.264754: Today's actual load so far 5.93kWh with 1.74kWh car/iBoost excluded, and 0kWh import ignored.
2026-08-10 09:25:11.528257: Inverter 0: Type SIG Sigenergy Sigenstor
2026-08-10 09:25:11.528412: Note: Inverter 0: Using inverter type SIG - not all features are available on all Inverter types
2026-08-10 09:25:11.528876: Reserve min: 0%, battery_min: 0%
2026-08-10 09:25:11.529058: Inverter 0 with soc_max 18.08kWh, nominal_capacity 18.08kWh, battery rate raw 12000.0W, charge rate 12.0kW, charge rate DC 12.0kW, discharge rate 12.0kW, battery_rate_min 0.0W, AC limit 12.0kW, export limit 4.0kW, reserve 0%, current_reserve 0%, temperature 32°C
2026-08-10 09:25:11.529713: Inverter 0 SoC: 0.09kW 0%, current charge rate 12000W, current discharge rate 12600W, current battery power 1125W, current battery voltage 52.0V, grid power 4007W, load power 618W, PV Power 3501W
2026-08-10 09:25:11.530089: Inverter 0 write_and_poll_switch: No write needed for scheduled_charge_enable as False == False
2026-08-10 09:25:11.530315: Inverter 0 scheduled charge enable is False
2026-08-10 09:25:11.530366: Inverter 0 charge windows currently []
2026-08-10 09:25:11.530413: Inverter 0 Charge settings: timed charged is disabled, power 12.0kW
2026-08-10 09:25:11.530661: Inverter 0 write_and_poll_switch: No write needed for scheduled_discharge_enable as True == True
2026-08-10 09:25:11.530710: Inverter 0 sensor.predbat_SIG_0_scheduled_discharge_enable set to True
2026-08-10 09:25:11.530827: Inverter 0 scheduled discharge enable is True
2026-08-10 09:25:11.531087: Inverter 0 idle time is 08-10 09:31:00-08-10 23:59:00
2026-08-10 09:25:11.531140: Inverter 0 discharge windows currently [{'start': 550, 'end': 571, 'average': 0}]
2026-08-10 09:25:11.531177: Note: Inverter does not support reserve - disabling reserve functions
2026-08-10 09:25:12.039904: Dynamic load last period 3.12kW, status low, threshold_battery 12.0kWh, threshold_car 6.0kWh,
2026-08-10 09:25:12.040131: Plan was last updated on 2026-08-10 09:15:00+01:00 and is now 10.0 minutes old
2026-08-10 09:25:12.040223: Best charge window [  ]
2026-08-10 09:25:12.041016: Best export window [ 10-08 09:00:00 - 10-08 09:30:00 @ 12.0p 0.0%, 10-08 09:15:00 - 10-08 15:00:00 @ 12.0p 0.0%, 10-08 17:00:00 - 10-08 17:30:00 @ 12.0p 88%, 10-08 17:45:00 - 10-08 18:00:00 @ 12.0p 86%, 11-08 07:30:00 - 11-08 08:00:00 @ 12.0p 24%, 11-08 08:05:00 - 11-08 11:00:00 @ 12.0p 1.0%, 11-08 11:05:00 - 11-08 15:00:00 @ 12.0p 10.0% ]
2026-08-10 09:25:12.043357: PV Forecast 116.7kWh and 10% Forecast 73.5kWh; PV cloud factor 0.2
2026-08-10 09:25:12.053575: Load divergence over 8.0 hours mean 724.0W, min 223.2W, max 3110.4W, std dev 409.78W, divergence 28.3%
2026-08-10 09:25:12.089040: Prediction kernel: enabled and active (loaded from /config/prediction_kernel_lib_aarch64.so)
2026-08-10 09:25:12.089352: Creating pool of 4 processes to match your CPU count
2026-08-10 09:25:12.216925: predict base end_record 08-11 15:25:00, final soc 18.08kWh, metric -518.84p, metric_keep 0kWh, min_soc 0.01kWh @ 08-10 09:25:00, load 30.51kWh, PV 120.01kWh
2026-08-10 09:25:13.155392: Battery has 30.0 hours left - now at 0.09kWh
2026-08-10 09:25:13.316245: predict base10 end_record 08-11 15:25:00, final soc 18.08kWh, metric -276.58p, metric_keep 0kWh, min_soc 0.0kWh @ 08-10 09:25:00, load 31.59kWh, PV 76.89kWh
2026-08-10 09:25:13.713211: predict best10 end_record 08-11 15:25:00, final soc 3.35kWh, metric -508.39p, metric_keep 0kWh, min_soc 0.0kWh @ 08-10 09:35:00, load 31.59kWh, PV 76.89kWh
2026-08-10 09:25:14.138170: predict best end_record 08-11 15:25:00, final soc 18.08kWh, metric -796.37p, metric_keep 0kWh, min_soc 0.01kWh @ 08-10 09:25:00, load 30.51kWh, PV 120.01kWh
2026-08-10 09:25:14.138348: Saving plan best values to HA entities
2026-08-10 09:25:15.475980: Evaluate trigger {'name': 'large', 'minutes': 60, 'energy': 1.0} results on total_energy 4.0
2026-08-10 09:25:15.548677: Evaluate trigger {'name': 'small', 'minutes': 15, 'energy': 0.25} results on total_energy 1.0
2026-08-10 09:25:15.613288: Best charging limit SoC's []kWh, export [0.0, 0.0, 88, 86, 24, 1.0, 10.0]kWh gives import battery 0kWh, house 0.0kWh, export 66.59kWh, metric -796.37p, metric10 -508.39p
2026-08-10 09:25:16.140539: Marginal costs baseline metric (no standing charge): -796.3699
2026-08-10 09:25:16.425275: Marginal energy costs matrix computed: min=0.0 max=15.2
2026-08-10 09:25:16.978050: Rate array import [{'start': 565, 'end': 2365, 'rate': 'fixed', 'range': '(21.2p)'}] export [{'start': 565, 'end': 2365, 'rate': 'fixed', 'range': '(12.0p)'}]
2026-08-10 09:25:16.978646: - Your estimated bill for today is £-4.32
2026-08-10 09:25:16.978695: - The battery is currently at 0% and is force exporting to 1% for the next 5 minutes.
2026-08-10 09:25:16.978725: - For the next 10 hours there will be a lot of solar generation and then it will decrease.
2026-08-10 09:25:16.978753: - No charging is planned.
2026-08-10 09:25:16.978779: 
2026-08-10 09:25:17.135334: Plan calculation took 5.10 seconds
2026-08-10 09:25:17.135478: Export threshold used for optimisation was 12.0p
2026-08-10 09:25:17.619979: High export rate windows [0: 08-10 09:00:00 - 08-10 09:30:00 @ 12.0, 1: 08-10 09:30:00 - 08-10 10:00:00 @ 12.0, 2: 08-10 10:00:00 - 08-10 10:30:00 @ 12.0, 3: 08-10 10:30:00 - 08-10 11:00:00 @ 12.0, 4: 08-10 11:00:00 - 08-10 11:30:00 @ 12.0, 5: 08-10 11:30:00 - 08-10 12:00:00 @ 12.0, 6: 08-10 12:00:00 - 08-10 12:30:00 @ 12.0, 7: 08-10 12:30:00 - 08-10 13:00:00 @ 12.0, 8: 08-10 13:00:00 - 08-10 13:30:00 @ 12.0, 9: 08-10 13:30:00 - 08-10 14:00:00 @ 12.0, 10: 08-10 14:00:00 - 08-10 14:30:00 @ 12.0, 11: 08-10 14:30:00 - 08-10 15:00:00 @ 12.0, 12: 08-10 15:00:00 - 08-10 15:30:00 @ 12.0, 13: 08-10 15:30:00 - 08-10 16:00:00 @ 12.0, 14: 08-10 16:00:00 - 08-10 16:30:00 @ 12.0, 15: 08-10 16:30:00 - 08-10 17:00:00 @ 12.0, 16: 08-10 17:00:00 - 08-10 17:30:00 @ 12.0, 17: 08-10 17:30:00 - 08-10 18:00:00 @ 12.0, 18: 08-10 18:00:00 - 08-10 18:30:00 @ 12.0, 19: 08-10 18:30:00 - 08-10 19:00:00 @ 12.0, 20: 08-10 19:00:00 - 08-10 19:30:00 @ 12.0, 21: 08-10 19:30:00 - 08-10 20:00:00 @ 12.0, 22: 08-10 20:00:00 - 08-10 20:30:00 @ 12.0, 23: 08-10 20:30:00 - 08-10 21:00:00 @ 12.0, 24: 08-10 21:00:00 - 08-10 21:30:00 @ 12.0, 25: 08-10 21:30:00 - 08-10 22:00:00 @ 12.0, 26: 08-10 22:00:00 - 08-10 22:30:00 @ 12.0, 27: 08-10 22:30:00 - 08-10 23:00:00 @ 12.0, 28: 08-10 23:00:00 - 08-10 23:30:00 @ 12.0, 29: 08-10 23:30:00 - 08-11 00:00:00 @ 12.0, 30: 08-11 00:00:00 - 08-11 00:30:00 @ 12.0, 31: 08-11 00:30:00 - 08-11 01:00:00 @ 12.0, 32: 08-11 01:00:00 - 08-11 01:30:00 @ 12.0, 33: 08-11 01:30:00 - 08-11 02:00:00 @ 12.0, 34: 08-11 02:00:00 - 08-11 02:30:00 @ 12.0, 35: 08-11 02:30:00 - 08-11 03:00:00 @ 12.0, 36: 08-11 03:00:00 - 08-11 03:30:00 @ 12.0, 37: 08-11 03:30:00 - 08-11 04:00:00 @ 12.0, 38: 08-11 04:00:00 - 08-11 04:30:00 @ 12.0, 39: 08-11 04:30:00 - 08-11 05:00:00 @ 12.0, 40: 08-11 05:00:00 - 08-11 05:30:00 @ 12.0, 41: 08-11 05:30:00 - 08-11 06:00:00 @ 12.0, 42: 08-11 06:00:00 - 08-11 06:30:00 @ 12.0, 43: 08-11 06:30:00 - 08-11 07:00:00 @ 12.0, 44: 08-11 07:00:00 - 08-11 07:30:00 @ 12.0, 45: 08-11 07:30:00 - 08-11 08:00:00 @ 12.0, 46: 08-11 08:00:00 - 08-11 08:30:00 @ 12.0, 47: 08-11 08:30:00 - 08-11 09:00:00 @ 12.0, 48: 08-11 09:00:00 - 08-11 09:30:00 @ 12.0, 49: 08-11 09:30:00 - 08-11 10:00:00 @ 12.0, 50: 08-11 10:00:00 - 08-11 10:30:00 @ 12.0, 51: 08-11 10:30:00 - 08-11 11:00:00 @ 12.0, 52: 08-11 11:00:00 - 08-11 11:30:00 @ 12.0, 53: 08-11 11:30:00 - 08-11 12:00:00 @ 12.0, 54: 08-11 12:00:00 - 08-11 12:30:00 @ 12.0, 55: 08-11 12:30:00 - 08-11 13:00:00 @ 12.0, 56: 08-11 13:00:00 - 08-11 13:30:00 @ 12.0, 57: 08-11 13:30:00 - 08-11 14:00:00 @ 12.0, 58: 08-11 14:00:00 - 08-11 14:30:00 @ 12.0, 59: 08-11 14:30:00 - 08-11 15:00:00 @ 12.0, 60: 08-11 15:00:00 - 08-11 15:30:00 @ 12.0]
2026-08-10 09:25:17.678482: Import threshold used for optimisation was 21.23p
2026-08-10 09:25:18.133299: Low import rate windows [0: 08-10 09:00:00 - 08-10 09:30:00 @ 21.23, 1: 08-10 09:30:00 - 08-10 10:00:00 @ 21.23, 2: 08-10 10:00:00 - 08-10 10:30:00 @ 21.23, 3: 08-10 10:30:00 - 08-10 11:00:00 @ 21.23, 4: 08-10 11:00:00 - 08-10 11:30:00 @ 21.23, 5: 08-10 11:30:00 - 08-10 12:00:00 @ 21.23, 6: 08-10 12:00:00 - 08-10 12:30:00 @ 21.23, 7: 08-10 12:30:00 - 08-10 13:00:00 @ 21.23, 8: 08-10 13:00:00 - 08-10 13:30:00 @ 21.23, 9: 08-10 13:30:00 - 08-10 14:00:00 @ 21.23, 10: 08-10 14:00:00 - 08-10 14:30:00 @ 21.23, 11: 08-10 14:30:00 - 08-10 15:00:00 @ 21.23, 12: 08-10 15:00:00 - 08-10 15:30:00 @ 21.23, 13: 08-10 15:30:00 - 08-10 16:00:00 @ 21.23, 14: 08-10 16:00:00 - 08-10 16:30:00 @ 21.23, 15: 08-10 16:30:00 - 08-10 17:00:00 @ 21.23, 16: 08-10 17:00:00 - 08-10 17:30:00 @ 21.23, 17: 08-10 17:30:00 - 08-10 18:00:00 @ 21.23, 18: 08-10 18:00:00 - 08-10 18:30:00 @ 21.23, 19: 08-10 18:30:00 - 08-10 19:00:00 @ 21.23, 20: 08-10 19:00:00 - 08-10 19:30:00 @ 21.23, 21: 08-10 19:30:00 - 08-10 20:00:00 @ 21.23, 22: 08-10 20:00:00 - 08-10 20:30:00 @ 21.23, 23: 08-10 20:30:00 - 08-10 21:00:00 @ 21.23, 24: 08-10 21:00:00 - 08-10 21:30:00 @ 21.23, 25: 08-10 21:30:00 - 08-10 22:00:00 @ 21.23, 26: 08-10 22:00:00 - 08-10 22:30:00 @ 21.23, 27: 08-10 22:30:00 - 08-10 23:00:00 @ 21.23, 28: 08-10 23:00:00 - 08-10 23:30:00 @ 21.23, 29: 08-10 23:30:00 - 08-11 00:00:00 @ 21.23, 30: 08-11 00:00:00 - 08-11 00:30:00 @ 21.23, 31: 08-11 00:30:00 - 08-11 01:00:00 @ 21.23, 32: 08-11 01:00:00 - 08-11 01:30:00 @ 21.23, 33: 08-11 01:30:00 - 08-11 02:00:00 @ 21.23, 34: 08-11 02:00:00 - 08-11 02:30:00 @ 21.23, 35: 08-11 02:30:00 - 08-11 03:00:00 @ 21.23, 36: 08-11 03:00:00 - 08-11 03:30:00 @ 21.23, 37: 08-11 03:30:00 - 08-11 04:00:00 @ 21.23, 38: 08-11 04:00:00 - 08-11 04:30:00 @ 21.23, 39: 08-11 04:30:00 - 08-11 05:00:00 @ 21.23, 40: 08-11 05:00:00 - 08-11 05:30:00 @ 21.23, 41: 08-11 05:30:00 - 08-11 06:00:00 @ 21.23, 42: 08-11 06:00:00 - 08-11 06:30:00 @ 21.23, 43: 08-11 06:30:00 - 08-11 07:00:00 @ 21.23, 44: 08-11 07:00:00 - 08-11 07:30:00 @ 21.23, 45: 08-11 07:30:00 - 08-11 08:00:00 @ 21.23, 46: 08-11 08:00:00 - 08-11 08:30:00 @ 21.23, 47: 08-11 08:30:00 - 08-11 09:00:00 @ 21.23, 48: 08-11 09:00:00 - 08-11 09:30:00 @ 21.23, 49: 08-11 09:30:00 - 08-11 10:00:00 @ 21.23, 50: 08-11 10:00:00 - 08-11 10:30:00 @ 21.23, 51: 08-11 10:30:00 - 08-11 11:00:00 @ 21.23, 52: 08-11 11:00:00 - 08-11 11:30:00 @ 21.23, 53: 08-11 11:30:00 - 08-11 12:00:00 @ 21.23, 54: 08-11 12:00:00 - 08-11 12:30:00 @ 21.23, 55: 08-11 12:30:00 - 08-11 13:00:00 @ 21.23, 56: 08-11 13:00:00 - 08-11 13:30:00 @ 21.23, 57: 08-11 13:30:00 - 08-11 14:00:00 @ 21.23, 58: 08-11 14:00:00 - 08-11 14:30:00 @ 21.23, 59: 08-11 14:30:00 - 08-11 15:00:00 @ 21.23, 60: 08-11 15:00:00 - 08-11 15:30:00 @ 21.23]
2026-08-10 09:25:18.246042: Inverter 0 No charge window yet, waiting for schedule.
2026-08-10 09:25:18.246307: Adjust idle time, charge 00:00:00-00:00:00 discharge 09:10:00-09:31:00
2026-08-10 09:25:18.246829: Adjust demand (idle) time computed is 09:31:00-23:59:00
2026-08-10 09:25:18.247105: Include original export start 08-10 09:10:00 with our start which is 08-10 09:10:00 (charge start 08-11 06:00:00 end 08-11 06:00:00)
2026-08-10 09:25:18.247227: Next export window will be: 2026-08-10 09:10:00+01:00 - 2026-08-10 09:31:00+01:00 at reserve 0.0
2026-08-10 09:25:18.247300: Exporting now - current SoC 0.09kWh and target 0.0kWh and power adjust 1.0
2026-08-10 09:25:18.247571: Inverter 0 Adjust force export to True, change times from 09:10:00 - 09:31:00 to 09:10:00 - 09:31:00
2026-08-10 09:25:18.247625: Adjust idle time, charge 00:00:00-00:00:00 discharge 09:10:00-09:31:00
2026-08-10 09:25:18.247970: Adjust demand (idle) time computed is 09:31:00-23:59:00
2026-08-10 09:25:18.248161: Inverter 0 write_and_poll_switch: No write needed for scheduled_discharge_enable as True == True
2026-08-10 09:25:18.248716: Inverter 0 adjust target SoC for export to 0% based on requested all inverter SoC 0%
2026-08-10 09:25:18.248932: Inverter 0 Current Target SoC is 0%, already at target
2026-08-10 09:25:18.249297: Inverter 0 Skipped service charge_stop_service domain charge service_name input_select.select_option as it was previously called.
2026-08-10 09:25:18.249421: Inverter 0 Calling service discharge_freeze_service domain discharge service_name input_select/select_option with data {'entity_id': 'input_select.predbat_requested_mode', 'option': 'Freeze Discharging'}

[chalfontchubby]

Your log this morning is exactly the confirmation this needed. This line sequence:

Inverter 0 Current Target SoC is 0%, already at target
Inverter 0 Calling service discharge_freeze_service ... {'option': 'Freeze Discharging'}

is adjust_export_immediate() (inverter.py) hitting target_soc == self.soc_percent - the exact mechanical fallback identified back on this thread, firing regardless of switch.predbat_set_export_freeze. Once your battery reached its 0.5% export target, that equality check kicked in and called discharge_freeze_service on its own, independent of the switch.

Opened a fix: #4472. Reaching the target via ordinary export isn't a deliberate freeze - it's just "nothing left to discharge," which already had correct handling one branch over (stop, don't freeze). Merged the two so only an explicit freeze request (your switch, genuinely on) calls the freeze service now.

Separately, thanks for testing the charge_cut_off mirror-bug idea - a negative result (no forced discharge when set below current SoC) is useful too, rules that one out as a contributor here.

Once #4472 is reviewed/merged this specific symptom should stop reproducing - would be great if you're able to confirm on your system once it's out.