Energy sharing in a condominium: the guide
616,135 Brussels and Walloon homes sit inside an apartment building. In February 2025, the CWaPE counted four same-building sharing operations in Wallonia. Four. Energy law is not the reason: it...
The open source platform for managing your energy community
OptimCE simplifies the management of members, meters and energy sharing within your renewable energy community.
Features
Everything you need to manage your energy community
Member management
Onboarding, roles, community-user links. Easily manage all participants in your community.
Meter management
Track each member's energy meters and centralise consumption and production data.
Allocation keys
Configure allocation keys and sharing operations to distribute energy among members.
Multi-community
A single instance for multiple energy communities. Built-in multi-tenant architecture.
Extensible modules
Event-driven integration (SQS) allowing you to connect third-party tools such as an energy management system.
Open source
Open and transparent source code. Contribute, audit and adapt the platform to your needs.
Why OptimCE?
A solution designed for European energy communities
Open source and transparent
Open, auditable and modifiable source code. No vendor lock-in.
Designed for the European framework
Compliant with European directives on renewable energy communities and citizen energy communities.
Easy to deploy
Quick installation. Multilingual interface (FR, EN, NL, DE) and scalable architecture.
Free, open, and built to stay that way
OptimCE is in alpha and part of an active research project. Here is what we commit to, today and long-term.
Free during alpha
The hosted SaaS at app.optimce.be is free to use while we are in alpha. Like many open source projects, the hosted version may move to paid plans later — if so, you will know well in advance. Self-hosting stays free regardless.
Open source, always
The full source code is released under Apache 2.0 and will stay open. Audit it, fork it, contribute — no proprietary core, no rug pull.
Self-hosting always free
Run OptimCE on your own infrastructure with zero restrictions. The open source core stays fully featured — no paid tiers, no feature gating. We may offer paid support or services on top, but never as a gate on the OSS itself.
For developers
Built with modern, open technologies
Angular frontend, Node.js/TypeScript and FastAPI backend, event-driven architecture. Contribute on GitHub or integrate OptimCE into your own tools via the REST API.
News
The latest news from the OptimCE project
Local electricity: the short-circuit guide
In 2020, 3,478 Walloon farms sold through a short supply chain — 27 % of all farms, up from 8 % a decade earlier. In August 2026, CWaPE lists 13...
Green electricity in Belgium: really green?
In 2024, suppliers active in Wallonia declared a supply mix that was 49.38 % renewable. That same year, the Belgian residual mix — what is left once every guarantee of...