The three main energy communities managed by RaYSun now each have their new website: WalloWatt for Wallonia, SamenWatt for Flanders and CityWatt for Brussels. Three autonomous communities, one manager: RaYSun sets up the solutions and handles the entire operational phase, so that any Belgian business, public body or non-profit can share renewable, local and cheaper electricity — without creating anything and without changing supplier.
Why three communities rather than one?
Because energy sharing is a regional competence. Each Region has its own legal framework, its grid operator (ORES and RESA in Wallonia, Fluvius in Flanders, Sibelga in Brussels) and its membership rules. An energy community is a legal entity, so one is needed per Region to host the energy sharing operations: the concrete groups of members within which kWh are actually exchanged, quarter-hour by quarter-hour.
This distinction — the community on one side, the operations on the other — structures the three websites. It is explained simply there, with the measured figures of every operation.
Autonomous communities, one manager
WalloWatt, SamenWatt and CityWatt are autonomous energy communities: each has its own legal personality, articles of association, general meeting and members, who are its stakeholders. They are not subsidiaries of RaYSun. RaYSun is their manager: it sets up the solutions and ensures the smooth running of every community and every sharing operation, end to end.
In practice, RaYSun takes charge of the entire operational phase:
- the study: analysis of consumption and production profiles, simulation of the gains, composition of the sharing operation;
- the administrative steps: regional accreditation, agreements with the grid operator, sharing contracts, members joining and leaving;
- day-to-day operations: allocation keys, quarter-hourly monitoring of exchanges, invoicing of the shared energy, reporting to members;
- the life of the community: preparing and holding general meetings, accounting, legal obligations, relations with the regional authorities.
Members keep the decisions; RaYSun takes care of everything else.
What you will find there
- The sharing operations in progress, with their real results: number of members, MWh shared per year, share of needs covered.
- Energilia, the regional operation open to all, which you join with a single contract: Energilia Wallonie and Energilia Brussels.
- The RaYSun simulator, built into each website: in two minutes, an estimate of what sharing could bring you, according to your profile and your Region.
- The My Community member portal, to follow your electricity exchanges day by day.
Three Regions, one proven model
These websites are not showcases: they reflect operations that are running today.
- WalloWatt hosts nine dedicated operations (Heidelberg Materials, Facq Wallonie, Brasserie du Bocq, the Hannut business park…) and Energilia Wallonie, i.e. 106 members in total and more than 11,000 MWh shared at a minimum in 2027.
- SamenWatt brings together 45 members in three operations (Wanele, Facq Vlaanderen, FICO Energy), for 2,512 MWh shared per year.
- CityWatt has four operations, including Energilia Brussels and its 54 members — hotels, shops, non-profits, producers — who share 2,754 MWh per year and thus cover 26% of their needs.
In total, seventeen sharing operations and more than 200 members, from the neighbourhood shop to the large industrial site, supported by the same team.
Turnkey, for real
The model is the same in all three Regions. You have nothing to create: the community already exists, with its articles, its accreditation and its agreements with the grid operator. You sign a single contract and join an existing sharing operation, or RaYSun creates a tailor-made one for your business park, your group of companies or your production surplus, within the community of your Region. In both cases, RaYSun then ensures its complete management, year after year.
Where to start?
Choose the website of your Region and run the simulation: in two minutes it gives you an order of magnitude of the possible savings. You can also book a call with one of our experts, or read our complete guide to energy communities in Belgium.