OpenEMS

5.8easy start · #20 of 23
in Energy Management Software

Free to practise onnot on record
Free trialnot on record
Well documentednot on record
Runs where you worknot on record

Runs on api, Linux, self-hosted, Web.

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OpenEMS is ranked #20 of 23 in energy management software on The Geeks Club. It runs on API, Linux, Self-hosted, Web.

Compared on energy management software

Free plan: Yes
Energy monitoring: portfolio
Energy forecasting: Yes
Utility data import: automated
API access: Yes

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The record

Purpose: OpenEMS is a modular open-source platform for monitoring, controlling, and integrating energy storage, renewable energy sources, and complementary devices and services.
Control: The architecture supports fast, PLC-like device control and reusable, device-independent control algorithms.
Extensibility: The software uses a modular architecture and modern programming languages to support extension.
Integrations: The OpenEMS Ready list includes integrations across energy storage, batteries, solar and battery inverters, EV charging stations, meters, tariffs, and data services.
Protocols: Listed data interfaces include 1-Wire, InfluxDB, M-Bus, MQTT, Modbus/TCP, Modbus/RTU, JSON/REST, and JSON/Websocket.
License: The documentation states that OpenEMS Edge and Backend use the Eclipse Public License 2.0, while OpenEMS UI uses the GNU Affero General Public License 3.
Source and releases: The source code is available online and on GitHub, and the documentation says new versions are released monthly.
Support: The project invites users to get in touch through the OpenEMS Community forum and says it is glad to support third parties taking their first steps.
Intended users: The Association describes its network as including universities, research institutes, grid operators, hardware manufacturers, software companies, and commercial and private owners.
Marketplace: The OpenEMS Marketplace connects commercial users and people seeking or offering expertise, including developers, freelancers, students, research institutes, and universities.
Project origin: The documentation says OpenEMS development was started by FENECON GmbH and that the software stack is used in private, commercial, and industrial applications.
Control and extensibility: The architecture supports fast, PLC-like device control, modular extension, and reusable device-independent control algorithms.
Deployment: The getting-started guide describes production deployment of Edge and Backend on Debian/Ubuntu or Docker.
Runtime requirement: OpenEMS requires Java 21 to run, according to the getting-started guide.

Where it ranks on The Geeks Club

Best Energy Management Software in 2026#20 of 23

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Sources

openems.github.io/openems.io/openems/latest/introduction.· checked 7 Oct 2026
openems.io/openems-ready/· checked 7 Oct 2026
openems.io/association/· checked 7 Oct 2026
openems.io/marketplace/· checked 7 Oct 2026
openems.github.io/openems.io/openems/latest/gettingstarte· checked 7 Oct 2026
openems.github.io/openems.io/openems/latest/backend/backe· checked 7 Oct 2026
openems.io· checked 28 Sept 2026