How to pay less for your electricity with energy sharing

Why your bill stays high even though green power is produced next door

Plenty of households in Luxembourg stay on their supplier's standard rate and pay top price for their electricity. Meanwhile, people with solar panels produce more than they consume. What happens to that surplus? Most of the time it goes back into the grid, bought back at a fairly low price.

The result is a bit absurd: your neighbour sells their solar electricity cheap, while you buy expensive electricity from the grid, even though it's produced a few metres away. The energy has barely moved, but the price difference ends up elsewhere. Energy sharing is there precisely to fix that mismatch.

What energy sharing actually means

Energy sharing is when several people consume renewable electricity produced locally together, most often from solar panels. Instead of selling all their surplus to the grid, a producer shares it with others, who buy it at a better price than the standard rate. It all still runs through the official electricity grid: nobody runs a cable between two houses.

In Luxembourg, the system is overseen by the Luxembourg Regulatory Institute (ILR), the energy regulator, and organised with your distribution system operator (DSO), the company that manages the cables and meters in your area, such as Creos. In practice, members form a "sharing group" and sign an agreement with that operator.

There are two scales. Local sharing, when participants are close to each other (within a 300-metre radius): the shared electricity is then exempt from grid fees and certain taxes, so it's even cheaper. And national sharing, open to all of Luxembourg, more flexible on distance but where grid fees apply. Good news if you don't have a sunny roof: you can join a group purely as a consumer, without producing anything.

No solar panels? You can still benefit

This is probably the least known part: you don't need to produce your own electricity to benefit from energy sharing. You can join a group as a plain consumer and buy part of your electricity from neighbours who have a solar surplus.

Renting? No problem, and you don't even need your landlord's agreement: what matters is having your own meter and your bill in your name (the normal case when renting). Nothing changes physically at your home, it's purely a metering matter. You don't need major work either: the calculation of what you consume from the shared pool runs through your smart meter (the Smarty), already installed in your home. Zero panels, zero battery, zero building site.

And above all, you cancel nothing. You keep your current electricity contract. When the shared energy isn't enough (at night, in winter, on sunless days), your usual supplier takes over as before. Sharing just plugs in on top of your existing setup.

How much you can really save

Here, you have to be honest about the numbers. The saving happens on the kilowatt-hours you get through sharing, not magically on your whole bill.

A rough idea, with the rates WattSwap displays in early 2026: locally shared electricity comes to around 13 cents per kWh all in, compared with about 20 cents from a standard supplier. That classic price breaks down roughly, in 2026, into 13 cents of electricity, 5 cents of network charges and 8% VAT. On the kilowatt-hours shared locally, you therefore pay up to a third less, because energy shared near you skips exactly those network charges. With national sharing it's a bit more (around 15 to 16 cents), but still below the standard rate.

The real question is what share of your consumption is covered by shared energy. The bigger that share, the more visible the effect on your annual bill. So be wary of claims like "you save 35% on your bill": the percentage applies to the shared kWh, not the total. Depending on your profile, that can mean a cut of a few dozen to a few hundred euros a year.

Beyond electricity, other levers ease your budget.

Where WattSwap comes in

On paper, joining an energy community means setting up a group, signing agreements with the grid operator and managing how the energy is split. Not exactly the kind of admin you feel like running yourself on a Sunday night.

That's where WattSwap (ouvre dans un nouvel onglet) comes in, a Luxembourg platform we've teamed up with at trigger. Its real strength: you're not limited to your immediate neighbours. WattSwap pools all its members into a national sharing network, so you can tap into solar and wind surplus produced elsewhere in Luxembourg, even if nobody on your street produces a thing. That's a network effect a single household could never get on its own. The platform handles all the administrative and technical side with the grid operator for you.

A few concrete points: no installation fees and no fixed cost. WattSwap only earns a commission on the savings you actually make, which means you can never end up paying more because of the platform: its interest is aligned with yours. And the network doesn't rely on solar alone, it also includes wind, so you benefit from local energy even on grey days. If you want to dig into how it officially works, the regulator has put a full explanation of electricity sharing online at weshareenergy.lu (ouvre dans un nouvel onglet).

As for the process, it's deliberately simple: you sign up online at wattswap.lu, it takes a few minutes, and WattSwap handles the rest.