Energy sharing · Apartment building · Belgium
Energy sharing in your apartment building
A roof that produces.
Apartments that benefit.
In Brussels, Wallonia and Flanders: panels on the building’s roof, a share of that production for every participating household — and a transparent split each co-owner can check, month after month.
Account and app free during testing. The €20 dongle isn’t needed to share: it lets you follow the sharing in the app.
Who can take part?
- In Brussels, the building’s occupants, owners and tenants alike, when the panels are on or in the building.
- A smart meter in each home: Sibelga replaces it free of charge for a sharing.
- Taking part is voluntary: anyone can join the sharing later on, or leave it at any time.
- No need to set up a company or an association: the co-ownership can organise the sharing itself. The panels can also belong to a third-party investor.
An association or a municipality can share this way within its own building. For a project that goes beyond the building, the framework is the energy community, a legal entity authorised by Brugel. Energy communities →
What the building gains
An example in Brussels, at October 2026 prices, with an agreed price of 12 c€ per kWh:
The co-ownership receives 12 c€ for that kWh, instead of what injecting it would earn: depending on its offer, often less than 7 c€.
Sources: Brugel’s network tariffs for sharing (2026) and a supplier’s price card, October 2026.
The 12 c€ is only an example: the participants set the price in the agreement, and it can even be zero. Also count Sibelga’s yearly metering fee, about €14 excl. VAT per participant.
How the production is split between apartments
The split key is chosen with the agreement, and Sibelga applies it every quarter-hour using the smart meters. It can be fixed (a share for each apartment), proportional to each one’s consumption, or a mix of the two. What one apartment doesn’t use can be passed on to the others.
Who does what?
The general meeting
It votes to install the panels on the common areas.
The person representing the sharing
The building manager or another appointed person. They register the sharing with Sibelga, send it the split key and invoice the participants for their share, from the volumes Sibelga provides.
Each participant
They have a smart meter, sign the agreement and pay their share. They keep their supplier for the rest.
Sibelga
Sibelga replaces meters free of charge, registers the sharing, applies the split key every quarter-hour and bills the network charges to the representative, who passes them on to each participant.
Amber Energy
With the dongle, each apartment sees its consumption live in the app, with an estimate of its share. Every month, the app also prepares the representative’s bills from Sibelga’s report. Amber Energy doesn’t draft the agreement or register the sharing.
A bill for each apartment, every month
Import Sibelga’s report
The monthly file Sibelga sends to the sharing’s representative.
Check the bills
For each apartment, the app works out the cost of the shared electricity at the agreed price, plus Sibelga’s network charges.
Send them and track payments
Bills go out by email, with a QR code for payment, or are handed over in person. You mark in the app who has paid.
What you sign
The agreement sets the price, the split key, the invoicing rules and what happens if a payment is missed. A participant can leave the sharing at any time. Brussels Environment publishes a model agreement for sharing within one building (in French): whoever produces (the owner of the panels, often the co-ownership) signs one with each participant.
Your meter readings stay linked to your Amber Energy account, and you can ask for them to be deleted at any time. Read our privacy policy.
Available in Brussels, Wallonia and Flanders
Your dongle for €20, with help setting it up.
A dongle plugs into the P1 port of your smart meter and shows your electricity in real time, at home and in the sharing, on a simple dashboard. We arrange delivery and help you with the installation.
App access is free during testing. The dongle is a one-time purchase of €20. If the app ever becomes paid, nothing will be charged without your agreement.
In Brussels the P1 port is open by default; in Wallonia and Flanders, first ask your grid operator to open it.
To get started at home, create your account, verify your email address and log in. Choose ‘Just me’ to request your dongle.
Questions? Email us at contact@amber-energy.be.
What happens next
- Create your account. Choose ‘Just me’ to follow your own home — that is the choice that reaches the dongle request. If you are setting up a sharing with your neighbours, choose ‘Set up a sharing’: we activate your sharing in the app, then you invite your neighbours.
- We help you install it on your meter: you plug it in, activate it in the app in a minute, and we check that the readings arrive.
- You follow your grid flows live: what you draw and what you inject. If you have solar panels, tracking production and total consumption also requires a compatible inverter connection. You can already use the app without joining a sharing.
- When you do share, each participant needs a smart meter, you agree the split and the price between yourselves, and the person representing the sharing registers it with your grid operator. Amber Energy then shows each person what they receive, in the app. You don’t need the dongle to receive shared energy: Sibelga measures the sharing with your smart meter. The dongle lets you follow the sharing in the app.
Why an app?
In a building the everyday question is simple: is there solar on the roof right now, and can I use it? Without a tool nobody knows before the end of the month.
Amber Energy shows it live to every apartment: the solar available now and what it draws from the grid. Each apartment follows its estimated share of the shared electricity, month after month.
See where every watt goes.
Amber Energy follows the building’s solar every 15 minutes and shows each household, in real time, its consumption and its estimated share of the sharing.
Live
What you use and where it comes from: your panels, your neighbours or the provider. Right now. Production needs a compatible inverter.
Your day
When the sun was there, and when you could make the most of it.
History
Day by day, month by month, year by year: where your electricity came from.
Managing the sharing
For whoever manages the sharing: invite members, see how the energy is split, follow the group’s figures.
Rooftop solar in an apartment building — how does it work?
Amber Energy is available in all three regions. The regulatory explanations below concern Brussels. For procedures in the other regions, consult CWaPE in Wallonia or Fluvius in Flanders.
- The general meeting votes to install panels on the common areas.
- The residents who want to sign the sharing agreement — participation is free to choose, owners and tenants alike.
- The sharing is registered with Sibelga; each participant has their smart meter.
- The roof’s production is split quarter-hour by quarter-hour; the shared part is billed separately and your supplier bills only the rest.
No private wiring, no change of supplier: the sharing runs over the existing grid, within the Brussels legal framework in force since 2022.
- Sibelga smart meters for each participant
- Agreement between participants (split and price)
- Quarter-hour distribution method
- Registration of the sharing with Sibelga
- Supplier kept for the rest of your consumption
Amber Energy doesn’t replace Sibelga, Brugel or your supplier: the app makes sharing clearer, more transparent and easier to follow.
Why the building is the ideal ground
No need to go looking for neighbours: they already live under the same roof. One general-meeting decision, one installation, and every participating apartment gets a share of the energy produced ten metres above it. In Brussels, where much of the housing stock is multi-unit, it is often the most practical route to solar for residents — tenants included.
For the building manager: the transparency that makes the vote a yes
What blocks a general meeting isn’t technical, it’s trust: "who gets what?". Amber Energy answers it continuously — every co-owner sees their own share of the production, every month, on their phone.
A manager who runs several buildings can follow them all the same way, with an agreement adapted to each project.
The three recognised forms in Brussels
Brussels recognises three forms of energy sharing. See the overview.
Between neighbours
Peer-to-peer sharing: a house with panels shares its surplus with another household in the street or neighbourhood.
Within the same building
Panels on the building’s roof supply the apartments. A common form in Brussels. You’re reading about this one.
The energy community
The legal entity for larger projects — citizens, SMEs, public bodies — with an authorisation issued by Brugel.
Frequently asked questions
Does it need a vote at the general meeting?
Yes, installing panels on the common areas is decided at the general meeting of co-owners. The sharing itself then rests on an agreement between the residents who choose to take part — nobody is obliged to join.
Do all apartments have to take part?
No. Each household is free to join or not. Those who take part receive a share of the solar production, billed separately; the others change nothing.
Can tenants benefit?
Yes. In Brussels, any resident of the building with their own Sibelga smart meter can take part in the sharing, whether they own or rent.
What does the building manager actually do?
The building manager can put the project on the general-meeting agenda. In Brussels, the appointed sharing representative, who is not necessarily the building manager, handles registration with Sibelga and billing participants. Amber Energy lets everyone follow their share in the app.
Does each apartment keep its supplier?
Yes. The shared energy is worked out quarter-hour by quarter-hour and billed separately; each household keeps a supply contract for the rest of its consumption.
What does it cost?
The dongle is a one-time purchase of €20, and we help you install it. App access is free during testing. If the app ever becomes paid, nothing will be charged without your agreement.
What happens to my data?
Your meter readings are linked to your account, to show your own energy and work out your share of the sharing. Detailed readings are kept for about a month and then summarised. We run no advertising, the app contains no third-party tracking, and this site only counts visits, without cookies. You can ask us to delete your account and its data at any time, for example if you move; the dongle stays yours. Leaving a sharing follows the agreement between the participants and the rules of your region. Read our privacy policy.
Your building could share its own solar power.
Looking for neighbours? Tell us where you live — in Brussels, your street too, optional.