OpenEMS
Open Source Energy Management System.
https://github.com/openems/openems
Category: Energy Systems
Sub Category: Building Energy Monitoring
Keywords
climatechange electric-vehicle-charging-station energy-management energy-storage hacktoberfest heatpump photovoltaics time-of-use-tariff
Keywords from Contributors
emobility ocpp charger pv eebus semp sunspec wallbox battery solar
Last synced: about 2 hours ago
JSON representation
Repository metadata
OpenEMS - Open Source Energy Management System
- Host: GitHub
- URL: https://github.com/openems/openems
- Owner: OpenEMS
- License: agpl-3.0
- Created: 2016-10-16T14:57:33.000Z (about 10 years ago)
- Default Branch: develop
- Last Pushed: 2026-11-01T20:40:38.000Z (about 11 hours ago)
- Last Synced: 2026-11-02T05:33:29.608Z (about 2 hours ago)
- Topics: climatechange, electric-vehicle-charging-station, energy-management, energy-storage, hacktoberfest, heatpump, photovoltaics, time-of-use-tariff
- Language: Java
- Homepage:
- Size: 299 MB
- Stars: 1,610
- Watchers: 46
- Forks: 698
- Open Issues: 68
- Releases: 142
-
Metadata Files:
- Readme: README.md
- Contributing: .github/CONTRIBUTING.md
- License: LICENSE-AGPL-3.0
- Code of conduct: .github/CODE_OF_CONDUCT.md
- Security: SECURITY.md
- Agents: AGENTS.md
- Copilot: .github/copilot-instructions.md
README.md
OpenEMS - the Open Source Energy Management System - is a modular platform for energy management applications. It was developed around the requirements of monitoring, controlling, and integrating energy storage together with renewable energy sources and complementary devices and services like electric vehicle charging stations, heat-pumps, electrolysers, time-of-use electricity tariffs and more.
If you plan to use OpenEMS for your own projects, please consider joining the OpenEMS Association e.V., a network of universities, hardware manufacturers, software companies as well as commercial and private owners, and get in touch in the OpenEMS Community forum.
OpenEMS in »Local Energy Management«
OpenEMS in »Areal Energy Management«
OpenEMS IoT stack
The OpenEMS 'Internet of Things' stack contains three main components:
- OpenEMS Edge runs on site, communicates with devices and services, collects data and executes control algorithms
- OpenEMS UI is the real-time user interface for web browsers and smartphones
- OpenEMS Backend runs on a (cloud) server, connects the decentralized Edge systems and provides aggregation, monitoring and control via internet
Features
The OpenEMS software architecture was designed to leverage some features that are required by a modern and flexible Energy Management System:
- Fast, PLC-like control of devices
- Easily extendable due to the use of modern programming languages and modular architecture
- Reusable, device independent control algorithms due to clear device abstraction
- Wide range of supported devices and protocols
OpenEMS UI Screenshots
System architecture
OpenEMS is generally used in combination with external hardware and software components
(the exception is a simulated development environment - see Getting Started). As a brief overview, this is how OpenEMS is used in production setups:
Getting Started
- Open up a Live-Demo on Gitpod
- Follow the Getting Started guide to setup OpenEMS on your own computer
- Please checkout our contribution guidelines before submitting code
Documentation
Open Source philosophy
The OpenEMS project is driven by the OpenEMS Association e.V., a network of users, vendors and scientific institutions from all kinds of areas like hardware manufacturers, software companies, grid operators and more. They share the common target of developing a free and open-source platform for energy management, that supports the 100 % energy transition.
We are inviting third parties to use OpenEMS for their own projects and are glad to support them with their first steps. In any case if you are interested in OpenEMS we would be glad to hear from you in the OpenEMS Community forum.
OpenEMS development was started by FENECON GmbH, a German company specialized in manufacturing and project development of energy storage systems. It is the software stack behind FEMS - FENECON Energy Management System and widely used in private, commercial and industrial applications.
OpenEMS is funded by several federal and EU funding projects. If you are a developer and you would like to get hired by one of the partner companies or universities for working on OpenEMS, please send your motivation letter to info@openems.io.
Scientific Research
If you use OpenEMS in your scientific research, please use our Zenodo Digital Object Identifier (DOI) as reference:
License
- OpenEMS Edge
- OpenEMS Backend
Copyright (C) 2016-2025 OpenEMS Association e.V.
This product includes software developed at FENECON GmbH: you can
redistribute it and/or modify it under the terms of the Eclipse Public License version 2.0.
- OpenEMS UI
Copyright (C) 2016-2025 OpenEMS Association e.V.
This product includes software developed at FENECON GmbH: you can
redistribute it and/or modify it under the terms of the GNU Affero General Public License version 3.
Owner metadata
- Name: OpenEMS
- Login: OpenEMS
- Email:
- Kind: organization
- Description: Open Source Energy Management System
- Website: http://openems.io
- Location:
- Twitter:
- Company:
- Icon url: https://avatars.githubusercontent.com/u/20765902?v=4
- Repositories: 10
- Last ynced at: 2026-11-01T05:07:38.040Z
- Profile URL: https://github.com/OpenEMS
GitHub Events
Total
- Commit comment event: 2
- Create event: 397
- Delete event: 377
- Fork event: 130
- Issue comment event: 975
- Issues event: 64
- Pull request event: 1093
- Pull request review comment event: 144
- Pull request review event: 440
- Push event: 800
- Release event: 11
- Watch event: 380
Last Year
- Commit comment event: 1
- Create event: 133
- Delete event: 134
- Fork event: 22
- Issue comment event: 261
- Issues event: 18
- Pull request event: 380
- Pull request review comment event: 67
- Pull request review event: 124
- Push event: 289
- Release event: 4
- Watch event: 66
Committers metadata
Last synced: 1 day ago
Total Commits: 6,066
Total Committers: 122
Avg Commits per committer: 49.721
Development Distribution Score (DDS): 0.509
Commits in past year: 478
Committers in past year: 44
Avg Commits per committer in past year: 10.864
Development Distribution Score (DDS) in past year: 0.552
| Name | Commits | |
|---|---|---|
| Stefan Feilmeier | s****r@f****e | 2976 |
| dependabot[bot] | 4****] | 1032 |
| Matthias Roßmann | m****n@f****e | 541 |
| Wolfgang Gerbl | w****l@f****e | 208 |
| Fabian Schwarzbeck | f****k@f****e | 164 |
| Emre Bakir | e****r@f****e | 151 |
| dependabot-preview[bot] | 2****] | 91 |
| huseyinsaht | h****u@f****e | 86 |
| da Kai | d****r@g****m | 69 |
| Hannes | h****7@g****m | 66 |
| Pooran Chandrashekaraiah | p****c@f****e | 54 |
| Max Obermeier | t****x@i****m | 45 |
| sebastianasen | 4****n | 37 |
| Sagar Venu | s****u@f****e | 37 |
| Lukas Rieger | 7****r | 34 |
| sjjh | 2****h | 34 |
| matthias.rossmann | m****n@F****e | 34 |
| Hiromasa Ihara | i****a@g****m | 26 |
| Sai Kumar | 9****r | 26 |
| Thomas Sicking | 9****g | 26 |
| Felix Stöcker | 3****i | 22 |
| luzpaz | l****z | 18 |
| Christian Lehne | 5****e | 18 |
| hvgollar | 5****r | 16 |
| KyleMicrocare | k****e@m****a | 16 |
| dependabot[bot] | s****t@d****m | 14 |
| Michael Grill | 5****l | 10 |
| sthhs | 1****s | 10 |
| janklostermann | j****n | 9 |
| DerWahreKlinki | 1****i | 9 |
| and 92 more... | ||
Committer domains:
- fenecon.de: 10
- gmx.de: 3
- ad.fenecon.de: 2
- fen021.ad.fenecon.de: 1
- microcare.co.za: 1
- dependabot.com: 1
- noctarius.com: 1
- ses-systeme.de: 1
- leonv.de: 1
- kaifer.cz: 1
- johncockerill.com: 1
- uni-passau.de: 1
- wimmerp.de: 1
- gmx.at: 1
- zedat.fu-berlin.de: 1
- angular.io: 1
- pplc.co: 1
- thorsten-zoerner.com: 1
- voltie.eu: 1
- fen008.ad.fenecon.de: 1
- me.com: 1
- deininger.net: 1
- kluniversity.in: 1
- ebbinghaus.ai: 1
- post.bgu.ac.il: 1
- maximilian.dev: 1
Issue and Pull Request metadata
Last synced: 1 day ago
Total issues: 253
Total pull requests: 4,190
Average time to close issues: 11 months
Average time to close pull requests: about 1 month
Total issue authors: 109
Total pull request authors: 161
Average comments per issue: 2.09
Average comments per pull request: 1.22
Merged pull request: 2,253
Bot issues: 6
Bot pull requests: 2,416
Past year issues: 42
Past year pull requests: 418
Past year average time to close issues: about 2 months
Past year average time to close pull requests: 24 days
Past year issue authors: 26
Past year pull request authors: 58
Past year average comments per issue: 1.9
Past year average comments per pull request: 1.73
Past year merged pull request: 219
Past year bot issues: 0
Past year bot pull requests: 177
Top Issue Authors
- sfeilmeier (53)
- ebakir (13)
- sjjh (9)
- Sn0w3y (8)
- MatthiasRossmann (7)
- benzman81 (7)
- ahummelsberger (6)
- newman85366-commits (6)
- martingruening (6)
- cf99 (5)
- Christoph-87 (5)
- dependabot[bot] (3)
- zoernert (3)
- zoesn89 (3)
- clehne (3)
Top Pull Request Authors
- dependabot[bot] (1,476)
- dependabot-preview[bot] (940)
- sfeilmeier (478)
- Sn0w3y (173)
- da-Kai (92)
- fabianfnc (70)
- miettal (60)
- DerStoecki (53)
- lukasrgr (48)
- sjjh (43)
- tsicking (40)
- pooran-c (37)
- DerWahreKlinki (34)
- venu-sagar (33)
- PunugupatiSaikumar (30)
Top Issue Labels
- Component: UI (49)
- Type: Enhancement (42)
- Component: Edge (23)
- Priority: Medium (20)
- Type: Bug (19)
- Priority: Low (17)
- Priority: High (16)
- Stale (14)
- Discussion Required (12)
- Component: Backend (11)
- dependencies (4)
- good first issue (2)
- Awaiting Response (2)
- javascript (2)
- java (1)
- hacktoberfest (1)
- Priority: Critical (1)
- Type: Maintenance (1)
Top Pull Request Labels
- dependencies (2,417)
- javascript (1,425)
- java (801)
- Stale (101)
- github_actions (27)
- Component: UI (26)
- Component: Edge (14)
- Type: Enhancement (12)
- python (7)
- Type: Bug (6)
- security (3)
- Component: Backend (2)
- Discussion Required (2)
- Awaiting Response (1)
- Priority: Low (1)
Package metadata
- Total packages: 2
- Total downloads: unknown
- Total dependent packages: 0 (may contain duplicates)
- Total dependent repositories: 0 (may contain duplicates)
- Total versions: 6
proxy.golang.org: github.com/openems/openems
- Homepage:
- Documentation: https://pkg.go.dev/github.com/openems/openems#section-documentation
- Licenses: agpl-3.0
- Latest release: v1.7.1 (published almost 9 years ago)
- Last Synced: 2026-11-01T05:06:20.749Z (1 day ago)
- Versions: 3
- Dependent Packages: 0
- Dependent Repositories: 0
-
Rankings:
- Dependent repos count: 1.622%
- Average: 4.057%
- Dependent packages count: 6.492%
proxy.golang.org: github.com/OpenEMS/openems
- Homepage:
- Documentation: https://pkg.go.dev/github.com/OpenEMS/openems#section-documentation
- Licenses: agpl-3.0
- Latest release: v1.7.1 (published almost 9 years ago)
- Last Synced: 2026-11-01T05:08:58.504Z (1 day ago)
- Versions: 3
- Dependent Packages: 0
- Dependent Repositories: 0
-
Rankings:
- Dependent packages count: 6.999%
- Average: 8.173%
- Dependent repos count: 9.346%
Dependencies
- com.fazecast:jSerialComm 2.5.1
- com.ghgande:j2mod 2.5.5
- com.github.rzymek:opczip 1.2.0
- com.google.code.gson:gson 2.9.0
- com.google.guava:failureaccess 1.0.1
- com.google.guava:guava 31.1-jre
- com.influxdb:flux-dsl 6.3.0
- com.influxdb:influxdb-client-core 6.3.0
- com.influxdb:influxdb-client-java 6.3.0
- com.influxdb:influxdb-client-utils 6.3.0
- com.squareup.moshi:moshi 1.12.0
- com.squareup.okhttp3:logging-interceptor 4.10.0
- com.squareup.okhttp3:okhttp 4.10.0
- com.squareup.okio:okio-jvm 3.2.0
- com.squareup.retrofit2:adapter-rxjava3 2.9.0
- com.squareup.retrofit2:converter-gson 2.9.0
- com.squareup.retrofit2:converter-scalars 2.9.0
- com.squareup.retrofit2:retrofit 2.9.0
- com.sun.activation:javax.activation 1.2.0
- com.zaxxer:HikariCP 5.0.1
- commons-fileupload:commons-fileupload 1.4
- eu.chargetime.ocpp:OCPP-J 1.0.1
- eu.chargetime.ocpp:common 1.0
- eu.chargetime.ocpp:v1_6 1.0.1
- fr.turri:aXMLRPC 1.12.0
- info.faljse:SDNotify 1.3
- io.gsonfire:gson-fire 1.8.5
- io.reactivex.rxjava3:rxjava 3.1.5
- javax.jmdns:jmdns 3.4.1
- net.java.dev.jna:jna 5.12.1
- org.apache.commons:commons-math3 3.6.1
- org.apache.felix:org.apache.felix.configadmin 1.9.24
- org.apache.felix:org.apache.felix.eventadmin 1.6.2
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- org.apache.felix:org.apache.felix.http.servlet-api 2.0.0
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- org.dhatim:fastexcel 0.12.15
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Score: -Infinity