2026.10.0

Release Highlights

• New implementations:
  • Phoenix Contact PLCnext
  • Alfen NG9xx Wallbox
  • SAX Power Home Plus
  • Sungrow PV Inverter & ESS
  • Hardy Barth cPH1
• Improved implementations:
  • FENECON & GoodWe Battery Inverter
  • KEBA P40
  • FENECON Commercial 100
  • Fronius
  • Modbus/TCP API Controller
  • REST API
  • PV-Inverter SellToGridLimit Controller
  • Askoma Electric Heater
  • my-PV Electric Heater
  • ENTSO-E time of use tariff
• UI improvements:
  • NUI supports Favorites
  • Theme switcher for Dark-/Bright Mode
• Core improvements:
  • Power-Solver v1
  • EnergyScheduler v2
  • Predictor Persistence Model for offline forecasts
  • UI: more usage of strict mode
  • Edge: more usage of reference target

Details

OpenEMS Edge

• Official driver of PLCnext platform of Phoenix Contact by @mbreier-sw in #3555
• PLCnext: migrate JUnit tests to Jupiter by @sfeilmeier in #3937
• Add Alfen EVSE chargepoint support by @Sn0w3y in #3915
• FENECON Commercial 40, DESS, Shelly: migrate reference target by @PunugupatiSaikumar in #3922
• Docs: Update MeterType import from common.types by @Byonnem in #3905
• FEMS Backports 2026-09-03 in #3948
  • GoodWe: fix too many register updates Commit
  • GoodWe: Scale Factoring Fix 4110 Commit
  • GoodWe: Changed Registers for VDE 4105/4110 Commit
  • KEBA P40 via Modbus: Set Enable when charging starts Commit
  • GoodWeBatteryInverter: fix memory leak Commit
  • GoodWe Registers for 4105/4110 Commit
  • Keba P40 (EVCS & EVSE): Don't set SET_ENABLE Commit
  • Commercial 100 Firmware Update & Modbus Task Priority change at runtime Commit
  • Commercial 100: set Battery 2 Protocol Commit
• PowerSolverV1: improve Duration calculation by @DerStoecki in #3947
• Power Distribution v1: fix MetaEss is an Inverter entry by @Christoph-87 in #3946
• SAX Power Home Plus: implement ESS with integrated grid meter by @Hans-4 in #3873
• Fronius: expose Channels via Modbus API by @Sn0w3y in #3988
• Modbus API Controller: improve readme with updated click path to download modbus mapping file by @sjjh in #3986
• Sungrow PV Inverter and ESS implementation by @tsicking in #3935
• PvInverter.SellToGridLimit: clamp setpoint to 0 by @JonasBechler in #3973
• Add Hardy Barth cPH1 EVCS support (ECB1 REST API) by @Christoph-87 in #3940

OpenEMS UI

• FEMS Backports 2026-09-03 in #3948
  • reduce unit test timeouts Commit
  • show automatic phase-switching for owners Commit
  • Modbus/TCP: channel regex accept all suffixes Commit
  • Implement favorite navigation Commit
  • fix icon size in segment button Commit
  • Public opt-in for new design Commit
  • EVSE: automatic phase switching (ADMIN only) Commit
  • Extend eslint Commit
• Expose theme switcher for OpenEMS theme by @Christoph-87 in #3945
• Fix OpenEMS UI by @sfeilmeier in #3957
• Small fixes and adds SVG selfconsumption by @chpoulter in #3959
• Docs: add nginx (re)start command by @Hans-4 in #3989
• Enable strict TypeScript checking for date-picker popover by @PunugupatiSaikumar in #3976
• FEMS Backports 2026-09-22 in #3996
  • Update io-heating-room to formly and NUI Commit
  • Add missing import for RangeSliderComponent in EVCS. Commit
  • try to fix UI build Commit
  • fix wrong signal usage Commit
  • mobile ui improvements Commit
  • AbstractFormlyComponent: refactor to signals Commit
  • Heating Element: add Minimum Energy mode Commit
  • Formly input-with-unit field: fix flex layout Commit
  • Country code handling in location validation component Commit
  • Improve CI build Commit
• FEMS Backports 2026-09-22 in #3996
  • Askoma & MyPV Energy Scheduler Commit
  • EVSE KEBA: Update timing for set-points Commit
  • ENTSO-E: Update warning for unavailable prices Commit
  • EnergyScheduler v2: Fix Optimizer onBestResult-Callback Commit
  • FENECON Masterbox IOC: Wait 10 ms between battery and ioc communication Commit
  • Keba EVCS: fix Logspam Commit
  • Energy Scheduler v2: LimitBySteadyFitness in Optimizer Commit
  • PredictorPersistenceModel: improve smoothing & more robust on missing data Commit
  • Controller.Api.ModbusRtu.ReadWrite: fix RS-485 mode reset Commit
  • Add local default language Commit
• Remove unused pipes and type KeysPipe strictly by @PunugupatiSaikumar in #3966
• Enable strict checking for DateUtils tests by @PunugupatiSaikumar in #3965
• Remove @ts-strict-ignore from color utils by @PunugupatiSaikumar in #3964
• Remove @ts-strict-ignore from array utils by @PunugupatiSaikumar in #3963
• Align TypeScript formatting and JSON-RPC docs by @hvgollar in #3962
• Migrate TimeUtils to strict TypeScript by @PunugupatiSaikumar in #3942
• Remove strict ignore directives from index components by @hvgollar in #3967

OpenEMS Backend

• UiWebsocket: use reverse index for sendSubscribedChannels instead of scanning all UI connections Commit
• InfluxDB: validate channel names before InfluxQL query building. Fixes Cross-tenant InfluxQL injection in OpenEMS Backend (historic-data query path)

Common/General

• FEMS Backports 2026-09-03 in #3948
  • Improve Gradle build Commit
• Docs: update outdated links in CONTRIBUTING.MD by @tf7157fu in #3985
• JettyUtils: block on Response.write() to prevent IncompleteRead by @JonasBechler in #3975
• FEMS Backports 2026-09-22 in #3996
  • CI / Docker: add setting to configue JVM args Commit
• Gradle: Centralize tool versions and upgrade JaCoCo to 0.8.15 by @sfeilmeier in #4006

Version Upgrades

• Bump actions/setup-java from 5.7.0 to 6.0.0 in /.github/workflows in the all-actions group by @dependabot[bot] in #3928
• Bump the openems-ui-security group across 1 directory with 4 updates by @dependabot[bot] in #3941
• Bump org.apache.felix:org.apache.felix.http.jetty12 from 2.0.4 to 2.0.6 in /cnf by @dependabot[bot] in #3953
• Bump org.jsoup:jsoup from 1.23.1 to 1.23.2 in /cnf by @dependabot[bot] in #3952
• Bump com.google.protobuf:protobuf-java from 4.36.0 to 4.36.1 in /cnf by @dependabot[bot] in #3951
• Bump the all-actions group across 1 directory with 4 updates by @dependabot[bot] in #3992
• Bump the bouncycastle group in /cnf with 2 updates by @dependabot[bot] in #3991
• Bump the auth0 group across 1 directory with 2 updates by @dependabot[bot] in #3990
• Bump org.jetbrains.kotlin:kotlin-osgi-bundle from 2.4.10 to 2.4.20 in /cnf by @dependabot[bot] in #3980
• Bump the bytebuddy group in /cnf with 2 updates by @dependabot[bot] in #3979
• Bump com.squareup.okio:okio-jvm from 3.18.1 to 3.18.2 in /cnf in the squareup group by @dependabot[bot] in #3977
• Bump hono from 4.13.2 to 4.13.7 in /ui in the openems-ui-security group across 1 directory by @dependabot[bot] in #3971
• Bump io.openems:j2mod from 3.3.0-openems.2 to 3.4.0-openems.1 by @da-Kai in #3969
• Bump the openems-ui group across 1 directory with 22 updates by @dependabot[bot] in #3993
• Bump com.auth0:auth0 from 5.2.0 to 5.3.0 in /cnf in the auth0 group by @dependabot[bot] in #4000
• Bump the bytebuddy group in /cnf with 2 updates by @dependabot[bot] in #4001
• Bump the all-actions group in /.github/workflows with 4 updates by @dependabot[bot] in #4003
• Bump com.google.protobuf:protobuf-java from 4.36.1 to 4.36.2 in /cnf by @dependabot[bot] in #4002
• Bump the prometheus group across 1 directory with 3 updates by @dependabot[bot] in #3819
• Update Gradle to 9.8.0 by @sfeilmeier in #3998

New Contributors

**Full Changelog**:

• @mbreier-sw made their first contribution in #3555
• @JonasBechler made their first contribution in #3975

Full Changelog: 2026.9.0...2026.10.0