# Latest **URL:** https://community.openems.io/latest.md?page=3 [Latest](https://community.openems.io/latest.md) · [Categories](https://community.openems.io/categories.md) **Page:** 4 --- ## [Release 2026.5.0 · OpenEMS/openems](https://community.openems.io/t/release-2026-5-0-openems-openems/10836)
**Author:** [@stefan.feilmeier](https://community.openems.io/u/stefan.feilmeier)\ **Replies:** 0\ **Last updated:** [May 1, 2026, 2:35pm UTC](https://community.openems.io/t/release-2026-5-0-openems-openems/10836 "2026-05-01T14:35:33Z")
--- ## [How to launch prebuilt OpenEMS UI?](https://community.openems.io/t/how-to-launch-prebuilt-openems-ui/10819)
**Author:** [@mzenker](https://community.openems.io/u/mzenker)\ **Replies:** 7\ **Last updated:** [April 28, 2026, 11:07pm UTC](https://community.openems.io/t/how-to-launch-prebuilt-openems-ui/10819 "2026-04-28T23:07:17Z")
Hi there, I am new to OpenEMS and would like to try the simulated test system as described in the Getting Started guide on a Laptop running Debian Linux. I have installed Java 21, started Edge and configured following t… --- ## [Vorstellung Michael Kögel | bürgerINenergie eG](https://community.openems.io/t/vorstellung-michael-kogel-burgerinenergie-eg/10822)
**Author:** [@mkoegel](https://community.openems.io/u/mkoegel)\ **Replies:** 1\ **Last updated:** [April 28, 2026, 8:01am UTC](https://community.openems.io/t/vorstellung-michael-kogel-burgerinenergie-eg/10822 "2026-04-28T08:01:56Z")
Kurzvorstellung Michael Kögel von der bürgerINenergie eG (ehrenamtlich), Berater für Mensch-zentrierte digitale Transformation (freiberuflich) und frisch gebackener Innovationsmanager für Energiesysteme. Ich bin Java 0… --- ## [OpenEMS Edge — FC4 Input Register Read Returns Zero for Custom ESS Bundle](https://community.openems.io/t/openems-edge-fc4-input-register-read-returns-zero-for-custom-ess-bundle/10824)
**Author:** [@ALa8idi](https://community.openems.io/u/ALa8idi)\ **Replies:** 3\ **Last updated:** [April 27, 2026, 9:30am UTC](https://community.openems.io/t/openems-edge-fc4-input-register-read-returns-zero-for-custom-ess-bundle/10824 "2026-04-27T09:30:00Z")
Environment OpenEMS Edge version: 2026.3.0 Deployment: Docker container on ARM (Raspberry Pi) Bundle type: Custom ESS bundle (ManagedSymmetricEss) Modbus bridge: Bridge.Modbus.Tcp Summary We have developed… --- ## [EVCC integration as read only EVCS ](https://community.openems.io/t/evcc-integration-as-read-only-evcs/10724)
**Author:** [@m.hauser](https://community.openems.io/u/m.hauser)\ **Replies:** 3\ **Last updated:** [April 25, 2026, 4:05pm UTC](https://community.openems.io/t/evcc-integration-as-read-only-evcs/10724 "2026-04-25T16:05:17Z")
Hi, as already mentioned here, @iseeberg79 and I have developed a new read-only EVCS meter integration for OpenEMS that reads loadpoint data from an evcc instance via its HTTP API. The PR can be found here: #3553. What… --- ## [10 Years of OpenEMS](https://community.openems.io/t/10-years-of-openems/10828)
**Author:** [@stefan.feilmeier](https://community.openems.io/u/stefan.feilmeier)\ **Replies:** 0\ **Last updated:** [April 24, 2026, 5:56pm UTC](https://community.openems.io/t/10-years-of-openems/10828 "2026-04-24T17:56:15Z")
--- ## [Info about json format for ancillary costs in timeOfUseTarrif entsoe](https://community.openems.io/t/info-about-json-format-for-ancillary-costs-in-timeofusetarrif-entsoe/10261)
**Author:** [@sjjh](https://community.openems.io/u/sjjh)\ **Replies:** 16\ **Last updated:** [April 24, 2026, 2:14pm UTC](https://community.openems.io/t/info-about-json-format-for-ancillary-costs-in-timeofusetarrif-entsoe/10261 "2026-04-24T14:14:36Z")
I did find the component Time-Of-Use Tariff ENTSO-E in the UI. I’m wondering how to configure it. It expects as a mandatory field a json string for ancillary costs. I did find below code, where the string seems to get pa… --- ## [Werkstudent / Student gesucht für OpenEMS-Projekt (Industrieanwendung)](https://community.openems.io/t/werkstudent-student-gesucht-fur-openems-projekt-industrieanwendung/10825)
**Author:** [@SGanzmann](https://community.openems.io/u/SGanzmann)\ **Replies:** 0\ **Last updated:** [April 24, 2026, 12:00pm UTC](https://community.openems.io/t/werkstudent-student-gesucht-fur-openems-projekt-industrieanwendung/10825 "2026-04-24T12:00:50Z")
Werkstudent / Student / Freelancer gesucht für OpenEMS-Projekt (Industrieanwendung) Wir betreiben ab Juni 2026 eine reale Industrieanlage mit: PV-Anlage (5 SMA-Wechselrichter) Wasserkraft (Erzeugungsdaten in einem… --- ## [Discussion: Split the openems/openems Repository by Technology](https://community.openems.io/t/discussion-split-the-openems-openems-repository-by-technology/10365)
**Author:** [@da-Kai](https://community.openems.io/u/da-Kai)\ **Replies:** 5\ **Last updated:** [April 24, 2026, 11:54am UTC](https://community.openems.io/t/discussion-split-the-openems-openems-repository-by-technology/10365 "2026-04-24T11:54:52Z")
Hi everyone, I’d like to open a discussion around the current structure of the openems/openems repository. As the project grows in complexity and adoption, we may benefit from splitting the repository by technology to … --- ## [Modbus TCP Communication Issues Between OpenEMS on UniPi and Windows Simulator](https://community.openems.io/t/modbus-tcp-communication-issues-between-openems-on-unipi-and-windows-simulator/10803)
**Author:** [@ALa8idi](https://community.openems.io/u/ALa8idi)\ **Replies:** 2\ **Last updated:** [April 24, 2026, 8:44am UTC](https://community.openems.io/t/modbus-tcp-communication-issues-between-openems-on-unipi-and-windows-simulator/10803 "2026-04-24T08:44:03Z")
We’ve deployed OpenEMS Edge and UI on a UniPi device (Base OS, Debian Trixie-based) and are running a Modbus TCP simulator on Windows 11 that emulates real energy assets across multiple ports. The setup works correctly … --- ## [OpenEMS-UI: Wie fertiges Paket starten?](https://community.openems.io/t/openems-ui-wie-fertiges-paket-starten/10820)
**Author:** [@mzenker](https://community.openems.io/u/mzenker)\ **Replies:** 1\ **Last updated:** [April 23, 2026, 10:06pm UTC](https://community.openems.io/t/openems-ui-wie-fertiges-paket-starten/10820 "2026-04-23T22:06:45Z")
Hallo zusammen, ich möchte OpenEMS für eine Heim-Anlage nutzen und versuche gerade, die Demo-Anwendung in “Getting Started” auf einem Laptop mit Debian Linux zum Laufen zu bekommen. Java 21 ist installiert, openems-edge… --- ## [SMA Tripower SE(!) Hybrid-WR in OpenEMS einbinden](https://community.openems.io/t/sma-tripower-se-hybrid-wr-in-openems-einbinden/10538)
**Author:** [@BMMayr](https://community.openems.io/u/BMMayr)\ **Replies:** 10\ **Last updated:** [April 23, 2026, 9:59am UTC](https://community.openems.io/t/sma-tripower-se-hybrid-wr-in-openems-einbinden/10538 "2026-04-23T09:59:01Z")
Hallo, Ich habe eine PV with SMA Tripower SE (Smart Energy) Hybridwechselrichter, SunnyHomeManager 2.0 und BYD HVS. Die Kommunikation via modbus funktioniert (in OpenEMS und anderen ModBus clients), aber die Werte die … --- ## [Cannot post in the forum](https://community.openems.io/t/cannot-post-in-the-forum/10817)
**Author:** [@mzenker](https://community.openems.io/u/mzenker)\ **Replies:** 1\ **Last updated:** [April 21, 2026, 8:16pm UTC](https://community.openems.io/t/cannot-post-in-the-forum/10817 "2026-04-21T20:16:33Z")
Hello, I am new to OpenEMS and have posted two messages with newbie questions. Each time there was a message saying that moderator approval was necessary. While one message was approved very quickly, the other one was n… --- ## [Fenecon Home 30 in SMA Data Manager M Anlage integrieren](https://community.openems.io/t/fenecon-home-30-in-sma-data-manager-m-anlage-integrieren/10806)
**Author:** [@RoR](https://community.openems.io/u/RoR)\ **Replies:** 4\ **Last updated:** [April 15, 2026, 8:45pm UTC](https://community.openems.io/t/fenecon-home-30-in-sma-data-manager-m-anlage-integrieren/10806 "2026-04-15T20:45:24Z")
Hallo miteinander, ich versuche seit einiger Zeit einen Fenecon Home 30 in eine SMA Anlage mit einem Data Manager M (EDMM-20) einzubinden. Die App Schreibzugriff ist auf dem FEMS installiert. Von Fenecon gab es eine Aus… --- ## [Question about Trigger a Fault](https://community.openems.io/t/question-about-trigger-a-fault/10794)
**Author:** [@codememeWY](https://community.openems.io/u/codememeWY)\ **Replies:** 1\ **Last updated:** [April 3, 2026, 9:03pm UTC](https://community.openems.io/t/question-about-trigger-a-fault/10794 "2026-04-03T21:03:57Z")
i have already deployed the ui via ng -server command ,and i want to trigger a fault such as over voltage,and show on the UI,how can i operate the configuration, --- ## [Balancing Grid Setpoint in Time-Of-Use Controller während BALANCING state](https://community.openems.io/t/balancing-grid-setpoint-in-time-of-use-controller-wahrend-balancing-state/10793)
**Author:** [@xlukem](https://community.openems.io/u/xlukem)\ **Replies:** 1\ **Last updated:** [April 1, 2026, 9:08pm UTC](https://community.openems.io/t/balancing-grid-setpoint-in-time-of-use-controller-wahrend-balancing-state/10793 "2026-04-01T21:08:55Z")
Hey zusammen! Ich würde gerne in OpenEMS den Time-Of-Use Controller verwenden und dabei für den BALANCING State eine Grid Setpoint einhalten. Das war vor dem Release 2026.2.0 auch noch möglich, indem im Balancing State … --- ## [Release 2026.4.0 · OpenEMS/openems](https://community.openems.io/t/release-2026-4-0-openems-openems/10796)
**Author:** [@stefan.feilmeier](https://community.openems.io/u/stefan.feilmeier)\ **Replies:** 0\ **Last updated:** [April 1, 2026, 7:59pm UTC](https://community.openems.io/t/release-2026-4-0-openems-openems/10796 "2026-04-01T19:59:25Z")
--- ## [OpenEMS custom Java-Websocket dependency usage](https://community.openems.io/t/openems-custom-java-websocket-dependency-usage/10785)
**Author:** [@paraplu](https://community.openems.io/u/paraplu)\ **Replies:** 3\ **Last updated:** [March 30, 2026, 8:48am UTC](https://community.openems.io/t/openems-custom-java-websocket-dependency-usage/10785 "2026-03-30T08:48:12Z")
Hey, it seems like OpenEMS uses a custom patched Java-Websocket dependency. We’ve observed an error regarding the websocket in an older OpenEMS version we’re still using. We pinpointed it to the Java-Websocket dependenc… --- ## [\[FEMS\] Kombination von zwei Systemen](https://community.openems.io/t/fems-kombination-von-zwei-systemen/10791)
**Author:** [@Michael](https://community.openems.io/u/Michael)\ **Replies:** 0\ **Last updated:** [March 29, 2026, 12:58pm UTC](https://community.openems.io/t/fems-kombination-von-zwei-systemen/10791 "2026-03-29T12:58:12Z")
Hallo zusammen, ist es technisch möglich ein bestehendes AC System (Pro 9-12) und ein neues Home 15 Hybrid System mit PV Generator zu kombinieren? Der Pro 9-12 wurde bisher mit einem BHKW geladen, welches entfällt. Als… --- ## [Introductions: Lakeland Solutions and Georgian College](https://community.openems.io/t/introductions-lakeland-solutions-and-georgian-college/10790)
**Author:** [@smccrindle](https://community.openems.io/u/smccrindle)\ **Replies:** 0\ **Last updated:** [March 26, 2026, 10:49am UTC](https://community.openems.io/t/introductions-lakeland-solutions-and-georgian-college/10790 "2026-03-26T10:49:05Z")
Georgian College Research and Innovation (https://www.georgiancollege.ca/community-alumni/applied-research-and-innovation/) has teamed up with Lakeland Solutions (https://lakelandsolutions.com/) to investigate the possib… --- ## [OpenEMS UI build for ARM 32](https://community.openems.io/t/openems-ui-build-for-arm-32/10778)
**Author:** [@omedirk](https://community.openems.io/u/omedirk)\ **Replies:** 5\ **Last updated:** [March 24, 2026, 6:54am UTC](https://community.openems.io/t/openems-ui-build-for-arm-32/10778 "2026-03-24T06:54:18Z")
Hi All, i rebuild the UI docker container for edge use because we needed ARM32 support & remote access. I need some info on whether to push this as contribution. @stefan.feilmeier, hope you can help me with that. the … --- ## [Installation of openEMS](https://community.openems.io/t/installation-of-openems/10788)
**Author:** [@soumya](https://community.openems.io/u/soumya)\ **Replies:** 1\ **Last updated:** [March 23, 2026, 5:23pm UTC](https://community.openems.io/t/installation-of-openems/10788 "2026-03-23T17:23:39Z")
How to install openEMS with python interface??? --- ## [\[Gelöst\] FEMS - Schreiben eines Wertes rückgängig machen](https://community.openems.io/t/gelost-fems-schreiben-eines-wertes-ruckgangig-machen/10577)
**Author:** [@Joerg](https://community.openems.io/u/Joerg)\ **Replies:** 11\ **Last updated:** [March 22, 2026, 7:46pm UTC](https://community.openems.io/t/gelost-fems-schreiben-eines-wertes-ruckgangig-machen/10577 "2026-03-22T19:46:30Z")
Hallo zusammen, wie kann man einen geschriebenen (WO) Wert, wieder rückgängig machen? Beispiel, hier aus dem Board: Würde das mit { “value”: null} gehen? Ich habe zwar schreibzugriff, traue mich aber nicht es zu mac… --- ## [Cannot connect the UI to openEMS-Edge](https://community.openems.io/t/cannot-connect-the-ui-to-openems-edge/10786)
**Author:** [@ChrisStuermer](https://community.openems.io/u/ChrisStuermer)\ **Replies:** 3\ **Last updated:** [March 21, 2026, 8:29am UTC](https://community.openems.io/t/cannot-connect-the-ui-to-openems-edge/10786 "2026-03-21T08:29:55Z")
Dear community, I am new to OpenEMS and want to evaluate if it could serve my needs and if ican handle this. So my fist step was to download the source to a Ubuntu server, compile me a new jar and connect with the UI I… --- ## [Implementierung Goodwe GW25k-ET mit zwei Batterie Strängen](https://community.openems.io/t/implementierung-goodwe-gw25k-et-mit-zwei-batterie-strangen/10098)
**Author:** [@wolfirr](https://community.openems.io/u/wolfirr)\ **Replies:** 9\ **Last updated:** [March 20, 2026, 10:26pm UTC](https://community.openems.io/t/implementierung-goodwe-gw25k-et-mit-zwei-batterie-strangen/10098 "2026-03-20T22:26:09Z")
Hallo Zusammen, wie ihr vielleicht mitbekommen habt, ist mein ehemaliger Caterva Speicher durch einen Goodwe GW25k-ET ersetzt worden, zumindest das Leistungsteil, die Akkus sind nun am Goodwe. Da der Goodwe aber zwei B… --- ## [Documentation: Getting Started and Backend Docs](https://community.openems.io/t/documentation-getting-started-and-backend-docs/10713)
**Author:** [@janklostermann](https://community.openems.io/u/janklostermann)\ **Replies:** 4\ **Last updated:** [March 17, 2026, 4:28pm UTC](https://community.openems.io/t/documentation-getting-started-and-backend-docs/10713 "2026-03-17T16:28:04Z")
Going through the Getting Started Guide I perceived that a big part of it is upon the OpenEMS Backend. The part of the documentation that describes the Backend does not even contain an overview upon the intended use of … --- ## [Konfiguration des Backends: "Edge.Websocket" fehlt ?](https://community.openems.io/t/konfiguration-des-backends-edge-websocket-fehlt/10771)
**Author:** [@cgn-nv](https://community.openems.io/u/cgn-nv)\ **Replies:** 3\ **Last updated:** [March 16, 2026, 9:53am UTC](https://community.openems.io/t/konfiguration-des-backends-edge-websocket-fehlt/10771 "2026-03-16T09:53:52Z")
Bei der Konfiguration des Backends über Apache Felix habe ich festgestellt, dass ich dort den “Edge.Websocket” nicht finde. Es gibt dort lediglich den “Edge.Manager”. Ist das der Ersatz für den "Edge.Websocket” ? --- ## [Integration von Wallbox (Warp3) / dynamischen Tarifen / Fahrzeugladung](https://community.openems.io/t/integration-von-wallbox-warp3-dynamischen-tarifen-fahrzeugladung/10773)
**Author:** [@energy](https://community.openems.io/u/energy)\ **Replies:** 5\ **Last updated:** [March 9, 2026, 1:09pm UTC](https://community.openems.io/t/integration-von-wallbox-warp3-dynamischen-tarifen-fahrzeugladung/10773 "2026-03-09T13:09:51Z")
Hallo Community, ich nutze seit einiger Zeit ein Fenecon-System mit FEMS und bin grundsätzlich sehr zufrieden. In der Praxis bin ich jedoch auf einige Punkte gestoßen, bei denen ich aktuell keine gute Lösung finde oder … --- ## [New IntelliJ Setup Using Gradle](https://community.openems.io/t/new-intellij-setup-using-gradle/10769)
**Author:** [@alex.belke](https://community.openems.io/u/alex.belke)\ **Replies:** 0\ **Last updated:** [March 4, 2026, 7:55am UTC](https://community.openems.io/t/new-intellij-setup-using-gradle/10769 "2026-03-04T07:55:05Z")
Hi everyone, the IntelliJ + Gradle setup guide is finally released. It explains how to set up the development environment step by step and should make onboarding and daily development easier. Feedback and improvements… --- ## [How to Reset a Modbus Value](https://community.openems.io/t/how-to-reset-a-modbus-value/10759)
**Author:** [@HolgerHees](https://community.openems.io/u/HolgerHees)\ **Replies:** 5\ **Last updated:** [March 2, 2026, 9:59am UTC](https://community.openems.io/t/how-to-reset-a-modbus-value/10759 "2026-03-02T09:59:42Z")
Hello, I’m using a fenecon home 10 with a 50kw battery. I’m setting SetActivePowerGreaterOrEquals to 1000 and SetActivePowerLessOrEquals to 0 every 30 seconds to avoid the watchdock timer. Now I try to reset/fallback … [Previous page](https://community.openems.io/latest.md?page=2) [Next page](https://community.openems.io/latest.md?page=4)