Release Highlights

• Time-of-Use-Tariff: App for Dynamic Ancillary costs
• Time-of-Use-Tariff Tibber: switch to QUARTER_HOURLY prices
• Compatibility with FENECON Commercial 50
• New Predictor for Consumption forecasting based on historical load profiles
• UI: Add Weather Widget in Live-View
• KOSTAL PIKO PV inverter (via HTTP/HTML)
• UI: Major Update and migration to Angular 20

Details

Common/General

• FEMS Backports 2025-10-02 in https://github.com/OpenEMS/openems/pull/3339
  • CI:
    • Update Unit Tests
    • Reduce Java build Log output: Reduce the log output to make errors clearer.
    • Print test summaries
  • Gradle:
    • Allow more than 2 Tests to run in parrallel
    • Enable parallel build by default
    • Remove failOnNoDiscoveredTests = false
  • Fix 'Configuration file ... is marked executable'
    • Fix warnings like: "Configuration file /usr/lib/systemd/timesyncd.conf.d/fems.conf is marked executable. Please remove executable permission bits. Proceeding anyway."
• Update Gradle + Plugins by @da-Kai in https://github.com/OpenEMS/openems/pull/3337
• Extend auto Stale and Close messages by @da-Kai in https://github.com/OpenEMS/openems/pull/3345
• Update Node.Js to 22 by @da-Kai in https://github.com/OpenEMS/openems/pull/3347
• Update MyModbusDeviceImpl.java by @sjjh in https://github.com/OpenEMS/openems/pull/3315
• Update MyConfig.java: removed import by @sjjh in https://github.com/OpenEMS/openems/pull/3318
• Improve UI docker by @da-Kai in https://github.com/OpenEMS/openems/pull/3366
• Change console output format from plan to colored in gradle build of ci by @miettal in https://github.com/OpenEMS/openems/pull/3364

OpenEMS Backend

• FEMS Backports 2025-10-02 in https://github.com/OpenEMS/openems/pull/3339
  • Dummy AppCenter Metadata
  • Remove UiWebsocketValidator
  • MetadataOdoo: handle uncached Edges
    • Solves throwing an Exception when an Edge is missing in EdgeCache

OpenEMS Edge

• FEMS Backports 2025-10-02 in https://github.com/OpenEMS/openems/pull/3339
  • my-PV + ASKOMA Apps: update names
  • KACO Battery Inverter: introduce SunSpec EnumField16
    • Sunspec channels are automatically created based on EnumField16 enums.
    • These channels are visible as StateChannels in the system.
    • Each channel's status (OK, Warning, or Failure) is defined during setup—by default, channels are OK unless specifically configured as warnings.
  • FENCON Commercial 50 App
  • Time-of-Use-Tariff:
    • App.TimeOfUseTariff.AncillaryCosts: App for Dynamic Ancillary costs
  • OperatingSystemDebianSystemd: Fix parseIpJson for Debian 9
    • Before a IndexOutOfBoundsException was thrown, which caused App Center install to fail
  • AppCenter:
    • Added a new formly field which handles links and redirects
    • run deactivation async: fixed exception while deactivating multiple nested checkables in CheckOr
    • Add JSONRPC Request for getting App Instances by Filter
  • KEBA ChargePoint: fix JUnit-Test
    • Use fixed DateTime reference, instead of .now(), for reproducability
    • Remove duplicate ReadWorkerTest
  • BridgeModbusTcpImplTest: delete JUnit test failing in CI
    • Introduced in #2879
  • PredictorProductionLinearModel: add channels to track prediction quality
    • Added new channels to track predicted production values from the PredictorProductionLinearModel
    • For each forecast run, predicted values at fixed horizons (1 hour, 6 hours, 12 hours, 24 hours, and 36 hours ahead) are stored in the respective channels
    • This enables precise monitoring and evaluation of the prediction accuracy over these time intervals
  • Meta-App: manage Maximum Grid Feed In Limit settings
    • Moves MAXIMUM_GRID_FEED_IN_LIMIT (GridOptimizeCharge) and FEED_POWER_PARA_SET (GoodWeBatteryInverter) to Meta Component
    • Both controllers use the same value as reference
    • Added a new formly field which handles links and redirects
  • New Predictor for Consumption forecasting based on historical load profiles
    • A new predictor model has been developed to forecast upcoming unmanaged consumption values.
    • The prediction is based on typical household daily load profiles.
    • Load profiles are determined by clustering historical daily consumption time series data.
    • The load profiles correspond to the cluster centres.
    • The upcoming profile is chosen using historical consumption patterns, such as the day of the week, whether the upcoming day is a working or non-working day, and the previous profile.
    • The model evaluates the prediction in real time. So, if during the day the model realizes that the wrong profile was chosen, a better-fitting one is selected for the rest of the day.
    • The forecasted quarterly values are determined by the predicted profile.
  • EVSE New Architecture
    • Add State-Machine to EVSE Single Controller:
      • EV_NOT_CONNECTED: EV is not physically connected to the charge point.
      • EV_CONNECTED: EV is physically connected but not yet charging.
      • CHARGING: Regular charging is ongoing. EV is drawing current according to configured limits and conditions.
      • FINISHED_EV_STOP: Charging finished by EV. EV is not drawing power even if it would be allowed to.
      • FINISHED_ENERGY_SESSION_LIMIT: Charging is finished by OpenEMS because the configured EnergySessionLimit was reached.
      • prepared for more...
    • Add Change-Limit for rising set-points (3 % per second)
    • Improve surplus distribution: recursive call makes sure everything is distributed to max power
    • Drop SESSION_LIMIT_REACHED state; replaced with State-Machine
    • Improve JUnit tests and coverage
    • KEBA: use Enum for setSetEnable() (applies also to EVCS)
    • Phase-Switch is currently not working. Needs to be added to State-Machine
    • Successfully tested with 2 x KEBA P30
    • Configurable minimum power for vehicle
      • Added min and max power in generic vehicle and generic vehicle app
  • KEBA UDP: disable flaky JUnit tests
    • UDP tests sometimes fail with java.lang.Exception: On TestCase [#1]: expected ReadValue [CHARGING] got [UNDEFINED] for Channel [Status] in Nature [Evcs] on Inputs [[]]
  • Tibber: switch to QUARTER_HOURLY prices
    • Change GraphQL to QUARTER_HOURLY resolution, update parsing of prices and JUnit tests
    • See https://developer.tibber.com/docs/changelog for details
  • GoodWe:
    • use new Registers for GridFeedInLimit and FixedPowerFactor: Registers for FENECON Commerical 50 changed
    • allow only possible EmsSetPower limits and correct AcImport/AcExport
  • Controller.Ess.RippleControlReceiver: Rundsteuerempfänger
    • Controller for Ripple Control Receiver
    • Digital Input 2 - Digital Input 4 are used as signal
    • DI2 reduces to 0%, DI3 to 30%, DI4 to 60%
    • If there are more than one relay active, the "strongest" limitation is used => e.g. 0% and 30% are activated => reducing to 0% power
    • Currently only for GoodWe Inverters => Feed-To-Grid Power Limit is set to the lowest of the two options:
    • MaxApparentPower * Limitation or the own set limit
    • removed MaxGridFeedInLimit of GridOptimizeCharge and BatteryInverter and added it in Meta app => uniform using of limit
  • Weather Forecast: keep data in channels
    • The current weather and the forecast for the next 24 hours are now being written in channels
    • This is more efficient in UI
  • Shelly: add invert config property to all ElectricityMeters
  • App.Heat.HeatingElement: ignoring heat and evcs components in the extern meter list
  • KACO Battery Inverter: introduce SunSpec EnumField16
    • Sunspec channels are automatically created based on EnumField16 enums.
    • These channels are visible as StateChannels in the system.
    • Each channel's status (OK, Warning, or Failure) is defined during setup—by default, channels are OK unless specifically configured as warnings.
  • Consistant Icons
    • changed icons and Buttons to be more consistently identified with functionality
• Fix high and low price description for Octopus Heat TOU Tariff by @sthhs in https://github.com/OpenEMS/openems/pull/3344
• Update timeofusetariff octopus heat Config.java: typo by @sjjh in https://github.com/OpenEMS/openems/pull/3346
• FEMS Backports 2025-10-08 in https://github.com/OpenEMS/openems/pull/3353
  • App.Meter.PqPlus available for OWNER
  • Weather.OpenMeteo: add random jitter to API calls to reduce simultaneous load
  • App.PvInverter.SolarEdge: make Modbus Unit ID configurable
  • Phase Rotation for Heating Element & Eastron meter
    • outsource enum "Phase Rotation" to make it independent
    • changing translations
    • implementing "Phase Rotation" in modbus protocoll of the Eastron meter
    • added property "Phase Rotation" in the Eastron meter app
• implement KOSTAL PIKO PV inverter via HTTP/HTML parsing by @Sn0w3y in https://github.com/OpenEMS/openems/pull/3297

OpenEMS UI

• FEMS Backports 2025-10-02 in https://github.com/OpenEMS/openems/pull/3339
  • Migration to Angular 20
    • Apply ng generate @angular/core:control-flow
    • VSCode: fix html formatting issues with new control flow syntax: Reference
  • Settings | Channels: add option to select multiple channels
  • EVSE New Architecture
    • Extend Evse with navigation to app center update page
    • Refactored app center update pages to be usable with new navigation
    • fix german/english translation of power
  • Fix Helpbutton-component not working due to wrong property name being checked
  • Time-of-Use-Tariff Ancillary Costs: Fix possible input errors
  • Style fixes
  • EVCS Cleanup
    • Added class EvcsComponent to clean up historic data generation in all views
    • fix Consumption flat widget
  • New Navigation: add check for isEnabled on component
    • prevent disabled components to be shown for new navigation
  • LiveDataService currentData: fix not refreshing bug
  • History Storage: add fallback channels for non hybrid ess
    • use active power for non hybridEss and subnavigation for phase details only for hybridEss
  • Unified icons for "Error" status
  • Settings: refactor to lazy loaded module
    • decrease size of init app bundle, this PR is focused on migrating Settings to standalone and lazy-loaded.
    • fixing changelog component not showing back-arrow when inistialising, improved back button behavior in header component by using Navigation services for dynamic visibility.
    • Ensured consistent back navigation across all routes, including when changelog.component is nested or reused.
  • Improve keyboard accessibility
    • Apply keyboard accessibility according to WCAG (Web Content Accessibility Guidelines)
  • GridOptimizedCharge: fix time format for live
    • displaying the endTimeDetailedDescription in Netzdienliche Beladung as 24h or 12h format depending on User's browser's language.
  • Warning Status: consistent usage of warning icon
    • changing display of warning status to have a warning sign / icon. where previously Fault & Warning statuses were displaying alert-outline sign / icon .
  • Add Weather Widget
    • Added new Weather Widget in Live View below the Energy Monitor
    • Displays current weather, 6-hour forecast, and daily forecast for the next 6 days
    • Shows temperature, general weather condition, and sun hours
    • Weather data is retrieved from the Edge using coordinates stored in Meta configuration
    • Forecasts are retrieved in quarter-hourly, hourly, and daily resolution for the next 7 days
    • Linear prediction model adapted to handle the new weather data format
    • Forecasts are cached on the Edge and the UI fetches only the data it currently needs
  • Settings: fix missing buttons
    • Added missing import for FlatButtonComponent
  • Widget for EnerixControl/Clever-PV
  • Ripple Control Receiver (Rundsteuerempfänger)
• FEMS Backports 2025-10-08 in https://github.com/OpenEMS/openems/pull/3353
  • TimeOfUseTariff: display only two decimals on history chart
    • set a fixed amount of decimal places for currency value
  • General improvements
  • Improve performance
    • removes unneccesary evaluating of getter modalComponent which has been evaluated every second and leads to slowing down the monitoring
  • Angular 20 Update: additional visual changes
    • See OpenEMS Community: https://community.openems.io/t/fems-backports-broke-many-css-styles/10527/3
  • Fix unsubscribe of channels
    • problem: too many channels unsubscribed on modal close
• Fix: prevent energy flow arrow backgrounds from disappearing by @Jasonlee6789 in https://github.com/OpenEMS/openems/pull/3365
• Enforce UPPER_SNAKE_CASE for translation keys by @Sn0w3y in https://github.com/OpenEMS/openems/pull/3367

Version Upgrades

• Bump org.apache.felix:org.apache.felix.http.jetty12 from 1.1.0 to 1.1.2 in /cnf by @dependabot[bot] in https://github.com/OpenEMS/openems/pull/3332
• Bump io.reactivex.rxjava3:rxjava from 3.1.11 to 3.1.12 in /cnf by @dependabot[bot] in https://github.com/OpenEMS/openems/pull/3333
• Bump the openems-ui group across 1 directory with 11 updates by @dependabot[bot] in https://github.com/OpenEMS/openems/pull/3340
• Bump tar-fs from 3.1.0 to 3.1.1 in /ui by @dependabot[bot] in https://github.com/OpenEMS/openems/pull/3331
• Bump net.java.dev.jna:jna from 5.18.0 to 5.18.1 in /cnf by @dependabot[bot] in https://github.com/OpenEMS/openems/pull/3348
• Bump org.mockito:mockito-core from 5.18.0 to 5.20.0 in /cnf by @dependabot[bot] in https://github.com/OpenEMS/openems/pull/3349
• Bump net.bytebuddy:byte-buddy from 1.17.6 to 1.17.7 in /cnf by @dependabot[bot] in https://github.com/OpenEMS/openems/pull/3351
• Bump org.apache.felix:org.apache.felix.http.jetty12 from 1.1.2 to 1.1.4 in /cnf by @dependabot[bot] in https://github.com/OpenEMS/openems/pull/3362
• Bump com.squareup.okhttp3:okhttp-jvm from 5.1.0 to 5.2.1 in /cnf by @dependabot[bot] in https://github.com/OpenEMS/openems/pull/3358
• Bump net.bytebuddy:byte-buddy from 1.17.7 to 1.17.8 in /cnf by @dependabot[bot] in https://github.com/OpenEMS/openems/pull/3360
• Bump the openems-ui group across 1 directory with 6 updates by @dependabot[bot] in https://github.com/OpenEMS/openems/pull/3363

Full Changelog: https://github.com/OpenEMS/openems/compare/2025.10.0...2025.11.0