sensors reference

HSEM Sensors Reference

Comprehensive reference for all entities exposed by the HSEM integration, including attributes, states, and dashboard examples.

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Entity overview

HSEM exposes these entity types:

Type	Count	Description
Sensor	~20+	Read-only state, plan, and diagnostic entities
Select	2	Working-mode override and Solcast likelihood selector
Switch	6+	Toggle entities for schedules and configuration
Time	6	Start/end time inputs for battery schedules
Number	4	Charge/discharge efficiency and EV target SoC inputs

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Working mode sensor

The primary HSEM sensor. Exposes the active battery recommendation and carries all planner output as attributes.

Entity: sensor.hsem_working_mode

State	Meaning
batteries_charge_grid	Battery charging from grid (forced by schedule or price)
batteries_charge_solar	Battery charging from PV surplus
batteries_discharge_mode	Battery discharging to cover house load
force_batteries_discharge	Forced discharge to grid (excess export)
force_export	Negative import price — all energy exported
ev_smart_charging	EV charging load allocated
batteries_wait_mode	Battery idle
time_passed	Slot is in the past
missing_input_entities	Required HA entities unavailable

Standard attributes

Attribute	Type	Description
batteries_current_capacity	float (kWh)	Current usable battery capacity above discharge floor
batteries_usable_capacity	float (kWh)	Usable battery capacity (rated − floor)
batteries_recommended_min_price_threshold	float	Discharge threshold from calculate_recommended_threshold()
batteries_capacity_loss_pct	float	Configured capacity loss percentage
import_electricity_price_state	float	Live import spot price (currency/kWh)
export_electricity_price_state	float	Live export spot price (currency/kWh)
export_electricity_min_price	float	Minimum export price for export gating
electricity_price_update_interval	int	Price refresh interval (minutes)
house_consumption_power_state	float (W)	Instantaneous house load
house_power_includes_ev_charger_power	bool	Whether EV load is baked into house power
net_consumption	float (W)	Net load (house − solar)
net_consumption_with_ev	float (W)	Net load including EV
solar_production_power_state	float (W)	Instantaneous solar production
months_winter / months_summer	list[int]	Configured winter/summer month ranges
batteries_enable_excess_export	bool	Excess export gating enabled
batteries_excess_export_discharge_buffer	float	Discharge buffer for excess export
house_consumption_energy_weight_1d	float	1-day consumption prediction weight
house_consumption_energy_weight_3d	float	3-day weight
house_consumption_energy_weight_7d	float	7-day weight
house_consumption_energy_weight_14d	float	14-day weight
last_updated	string (ISO-8601)	Last coordinator cycle timestamp
status	string	ok, read_only, wait, or error
degraded_mode	string	ok, degraded, or error
hardware_writes_blocked	bool	Safety gate preventing hardware writes
apply_status	string	Last apply result: ok, unverified, failed, skipped
apply_failed_entities	list[string]	Entities that failed the last hardware write
data_quality	dict	Structured input completeness report
force_working_mode_state	string	Active override mode or auto

Plan output attributes

Attribute	Type	Description
hourly_recommendation	dict | null	The recommendation slot active right now
hourly_recommendations	list[dict]	Full list of planner slots for the horizon
batteries_schedules	list	Active battery discharge schedule definitions
batteries_schedules_remaining_capacity_needed	float (kWh)	Remaining discharge budget across schedules

hourly_recommendations slot structure

Each entry in the hourly_recommendations list is a dictionary with these keys:

Key	Type	Description
start	string (ISO-8601)	Slot start timestamp
end	string (ISO-8601)	Slot end timestamp
recommendation	string | null	Working-mode value (see state table above)
import_price	float	Spot import price (local currency/kWh)
export_price	float	Spot export price (local currency/kWh)
avg_house_consumption_kwh	float	Weighted spike-aware consumption estimate (kWh)
avg_house_consumption_1d_kwh	float	1-day window contribution (kWh)
avg_house_consumption_3d_kwh	float	3-day window contribution (kWh)
avg_house_consumption_7d_kwh	float	7-day window contribution (kWh)
avg_house_consumption_14d_kwh	float	14-day window contribution (kWh)
solcast_pv_estimate_kwh	float	Forecast PV production for the slot (kWh)
estimated_net_consumption_kwh	float	avg_consumption + ev_planned_load − pv_estimate (kWh)
ev_planned_load_kwh	float	Extra EV AC load added to net consumption (kWh, ≥ 0)
ev_accounted_load_kwh	float	EV AC load already in house consumption (kWh, ≥ 0)
ev_total_planned_load_kwh	float	Total EV AC load (planned + accounted, kWh, ≥ 0)
ev_charger_calculated_power	float	Primary EV charger target AC power (W)
ev_second_charger_calculated_power	float	Second EV charger target AC power (W)
estimated_cost_currency	float	Estimated grid cost for the slot (local currency)
batteries_charged_kwh	float	Energy scheduled to charge into battery (kWh)
batteries_discharged_kwh	float	Energy drawn from battery by SoC simulation (kWh)
estimated_battery_capacity_kwh	float	Remaining usable battery energy at slot end (kWh)
estimated_battery_soc_pct	float	Simulated absolute SoC at slot end (0–100 %)
grid_import_kwh	float	Energy imported from grid (kWh)
grid_export_kwh	float	Energy exported to grid (kWh)

Extended attributes (when enabled)

When the switch.hsem_extended_attributes switch is on, additional entity-ID attributes are exposed. These reference the raw HA entity IDs for troubleshooting:

Attribute	Description
import_electricity_price_sensor_entity	Import price sensor entity ID
export_electricity_price_sensor_entity	Export price sensor entity ID
ev_charger_power_entity	Primary EV charger power entity ID
ev_charger_status_entity	Primary EV charger status entity ID
ev_soc_entity	Primary EV SoC entity ID
ev_connected_entity	Primary EV connected entity ID
ev_second_charger_power_entity	Second EV charger power entity ID
ev_second_charger_status_entity	Second EV charger status entity ID
ev_second_soc_entity	Second EV SoC entity ID
ev_second_connected_entity	Second EV connected entity ID
force_working_mode_entity	Force working mode entity ID
house_consumption_power_entity	House consumption power entity ID
solar_production_power_entity	Solar production power entity ID
solcast_pv_forecast_forecast_today_entity	Solcast today forecast entity ID
solcast_pv_forecast_forecast_tomorrow_entity	Solcast tomorrow forecast entity ID
(plus all huawei_solar_* entity IDs)	Huawei battery and inverter entity IDs
recommendation_interval_minutes	Slot width in minutes
recommendation_interval_length	Number of slots in the horizon
unique_id	Integration unique ID
update_interval	Polling interval in minutes
read_only	Whether read-only mode is active

EV attributes

Attribute	Type	Description
ev_charger_power_state	float (W)	Primary EV charger instantaneous power
ev_charger_status_state	bool	Primary EV currently charging
ev_soc_state	float (%)	Primary EV current SoC
ev_soc_target_state	float (%)	Primary EV target SoC
ev_connected_state	bool	Primary EV plugged in
ev_allow_charge_past_target_soc	bool	Allow charging past target
ev_charger_max_discharge_power_state	float (W)	Max discharge power cap
ev_charger_force_max_discharge_power	bool	Force max discharge power flag
ev_second_enabled	bool	Second EV integration enabled
ev_second_charger_power_state	float (W)	Second EV charger power
ev_second_charger_status_state	bool	Second EV charging
ev_second_soc_state	float (%)	Second EV SoC
ev_second_soc_target_state	float (%)	Second EV target SoC
ev_second_connected_state	bool	Second EV plugged in
ev_second_allow_charge_past_target_soc	bool	Second EV past-target flag
ev_second_charger_max_discharge_power_state	float (W)	Second EV max discharge cap
ev_second_charger_force_max_discharge_power	bool	Second EV force max discharge flag

Huawei battery attributes

Attribute	Type	Description
huawei_solar_batteries_charging_cutoff_capacity_state	float (%)	Inverter charging cutoff SoC
huawei_solar_batteries_grid_charge_cutoff_soc_state	float (%)	Grid charge cutoff SoC
huawei_solar_batteries_maximum_charging_power_state	float (W)	Maximum charge power
huawei_solar_batteries_maximum_discharging_power_state	float (W)	Maximum discharge power
huawei_solar_batteries_rated_capacity_max_state	float (Wh)	Rated battery capacity
huawei_solar_batteries_rated_capacity_min_state	float (kWh)	Discharge floor capacity
huawei_solar_batteries_state_of_capacity_state	float (%)	Battery SoC
huawei_solar_batteries_tou_charging_and_discharging_periods_periods	list	Parsed TOU periods
huawei_solar_batteries_tou_charging_and_discharging_periods_state	string	Raw TOU entity state
huawei_solar_batteries_working_mode_state	string	Inverter working mode
huawei_solar_inverter_active_power_control_state_state	string	APC mode
huawei_solar_batteries_excess_pv_energy_use_in_tou_state	string	Excess PV in TOU setting

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Plan explanation sensor

Displays the planner's strategy rationale and per-candidate cost breakdown.

Entity: sensor.hsem_plan_explanation

Key attribute	Description
State	Winning candidate name: "milp", "passive", "no_action"
selected_strategy	Human-readable description (e.g. "charge_grid_discharge_peak")
winner_name	Winning candidate name (same as state)
summary	One-sentence human-readable reason
score	Estimated savings vs doing nothing (currency)
estimated_total_cost	Net grid cost for the horizon
price_spread	Max minus min import price (arbitrage potential)
peak_import_price / off_peak_import_price	Price extremes
forecast_pv_kwh	Total PV forecast for the horizon
forecast_net_consumption_kwh	Total load minus PV
battery_soc_pct / battery_soc_at_end_pct	Starting and ending SoC
constraints	Active flags (winter_month, excess_export_enabled, etc.)
rejected_plans	Alternatives with name, reason, and full cost breakdown
hysteresis_active	Whether plan-level hysteresis was applied
hysteresis_reason	Explanation of hysteresis decision

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Forecast accuracy sensor

Diagnostic sensor tracking forecast vs actual PV and load accuracy.

Entity: sensor.hsem_forecast_accuracy

Attribute	Unit	Description
native_value	kWh	PV MAE (Mean Absolute Error)
window_slots	—	Total slots in ring buffer
finalised_slots	—	Slots contributing to metrics
mae_pv_kwh	kWh	PV Mean Absolute Error
mae_load_kwh	kWh	Load Mean Absolute Error
bias_pv_kwh	kWh	PV signed bias (positive = over-forecast)
bias_load_kwh	kWh	Load signed bias
rmse_pv_kwh	kWh	PV Root Mean Squared Error
rmse_load_kwh	kWh	Load RMSE
mape_pv_pct	%	PV MAPE
mape_load_pct	%	Load MAPE
latest_pv_forecast_kwh	kWh	Latest finalised slot PV forecast
latest_pv_actual_kwh	kWh	Latest finalised slot PV actual
latest_load_forecast_kwh	kWh	Latest finalised slot load forecast
latest_load_actual_kwh	kWh	Latest finalised slot load actual

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EV charging plan sensors

Diagnostic sensors displaying the EV charging plan details.

Entities:

• sensor.hsem_ev_optimal_charging_plan — Primary EV
• sensor.hsem_ev_second_optimal_charging_plan — Second EV

State	Meaning
not_connected	EV is not plugged in
smart_charging_disabled	Smart charging turned off
fully_charged	Already at or above target SoC
charging	EV scheduled to charge in current slot
waiting	Connected but no active charging slot
unavailable	Not configured or capacity/power is zero

Key attributes:

Attribute	Description
battery_capacity_kwh	EV battery nameplate capacity
charge_power_kw	Charger AC output power
current_soc / target_soc	EV SoC values
ev_connected	Whether vehicle is plugged in
total_kwh_needed	Energy needed to reach target
deadline	ISO-8601 charging deadline
charging_slots	List of allocated charging slots with details
planned_load_by_slot	Dict of slot → kWh load
data_quality	Diagnostic warnings

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EV charging active sensor

Boolean sensor indicating whether any EV is actively drawing power.

Entity: sensor.hsem_ev_charging_sensor

State	Meaning
on	At least one EV is charging
off	No EV is charging

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Battery SoC sensor

Snapshot of the battery state of charge.

Entity: sensor.hsem_battery_soc_sensor

State	Unit	Description
0–100	%	Battery SoC percentage

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Diagnostic sensors

Entity	Display Name	Purpose	State / Value
sensor.hsem_applier_status_sensor	Inverter Apply Status	Hardware write success/failure	ok, unverified, failed, skipped
sensor.hsem_battery_soc_sensor	Battery State of Charge	Battery SoC snapshot	Percentage (0–100)
sensor.hsem_degraded_mode_sensor	System Health	Overall system health	ok, degraded, error
sensor.hsem_ev_charging_sensor	EV Charging Active	Any EV actively charging	on, off
sensor.hsem_force_mode_sensor	Force Working Mode	Override active indicator	auto or override mode name
sensor.hsem_hardware_writes_sensor	Hardware Writes	Writes allowed/blocked by safety gate	allowed, blocked
sensor.hsem_read_only_sensor	Read-Only Mode	Read-only mode indicator	on, off
sensor.hsem_house_consumption_power_sensor_*_*	House Consumption Power	House load for a time range	Watts (W)
sensor.hsem_net_consumption_sensor	Net Consumption	Net load (house minus solar)	Watts (W)
sensor.hsem_last_updated_sensor	Last Updated	Last coordinator cycle timestamp	ISO-8601 timestamp
sensor.hsem_next_update_sensor	Next Update	Next scheduled coordinator cycle	ISO-8601 timestamp
sensor.hsem_missing_entities_sensor	Missing Input Entities	Count of missing input entities	Integer
sensor.hsem_recommendation_interval_sensor	Recommendation Interval	Slot width and horizon info	Minutes
sensor.hsem_update_interval_sensor	Update Interval	Current polling interval	Minutes

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Select entities

Force working mode

Entity: select.hsem_force_working_mode

Option	Description
auto	Normal operation — planner controls battery
batteries_charge_grid	Force grid charge
batteries_charge_solar	Force solar charge
batteries_discharge_mode	Force discharge to house
batteries_wait_mode	Force idle
ev_smart_charging	Force EV charging
force_batteries_discharge	Force discharge to grid
force_export	Force all energy to export

Solcast PV forecast likelihood

Entity: select.hsem_solcast_likelihood

Selects which Solcast likelihood scenario to use for PV forecasts (e.g. p10, p50, p90). This setting is also configurable in the options flow.

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Switch entities

Entity	Purpose
switch.hsem_read_only	Block all hardware writes
switch.hsem_extended_attributes	Enable extended diagnostic attributes
switch.hsem_verbose_logging	Enable verbose logging
switch.hsem_batteries_schedule_1	Toggle battery schedule 1
switch.hsem_batteries_schedule_2	Toggle battery schedule 2
switch.hsem_batteries_schedule_3	Toggle battery schedule 3

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Number entities

Entity	Purpose	Range
number.hsem_battery_charge_efficiency	Battery charge efficiency	1–100 %
number.hsem_battery_discharge_efficiency	Battery discharge efficiency	1–100 %
number.hsem_ev_target_soc	Primary EV target SoC	0–100 %
number.hsem_ev_second_target_soc	Second EV target SoC	0–100 %

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Time entities

Entity	Purpose
time.hsem_batteries_schedule_1_start	Schedule 1 start time
time.hsem_batteries_schedule_1_end	Schedule 1 end time
time.hsem_batteries_schedule_2_start	Schedule 2 start time
time.hsem_batteries_schedule_2_end	Schedule 2 end time
time.hsem_batteries_schedule_3_start	Schedule 3 start time
time.hsem_batteries_schedule_3_end	Schedule 3 end time

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Data quality attribute

The data_quality dict on the working mode sensor provides a structured input completeness report. Example structure:

{
  "import_price": true,
  "export_price": true,
  "house_consumption": true,
  "solar_production": true,
  "battery_soc": true,
  "battery_capacity": true,
  "solcast_today": true,
  "solcast_tomorrow": false,
  "ev_connected": true,
  "ev_soc": true,
  "ev_second_connected": null,
  "ev_second_soc": null
}

Each key is a sensor category; the value is true (available), false (missing), or null (not configured / not applicable).