Storage batteries paired with solar in Liège (4000) and across the whole Meuse conurbation, from Outremeuse to the slopes of Cointe. A Liège-based team, a free self-consumption study scheduled within 48h and installation in a single day — to get the most out of your photovoltaic system against the Walloon prosumer tariff.
We install storage batteries in Liège and across the whole Meuse conurbation, paired with existing photovoltaic systems — from the townhouses of Outremeuse to the open villas on the slopes of Cointe and Sart-Tilman.
The self-consumption study is carried out at your home, with no call-out fee and scheduled within 48 hours ; we analyse your consumption profile, your solar production and your prosumer tariff to size the battery precisely, then we install and connect it in a single day.
We know Liège buildingsBeyond Liège itself, we also install batteries in Seraing, Herstal, Sclessin and Angleur, as well as towards Seraing, Herstal and Visé along the Meuse — same team, same lead times across the whole province.
Liège relies on the schemes of Wallonia. Here are the levers that make storage particularly cost-effective and that we build into your study.
In Wallonia, the bidirectional meter and the prosumer tariff charge for the energy fed back to the grid : every kWh stored and then reused at home, rather than fed back, directly lightens your bill. This is what makes a battery especially cost-effective in Liège — often several hundred euros of gain per year on a well-sized system.
For a home over 10 years old, VAT drops from 21 % to 6 % on the supply and installation of the battery paired with your solar system. Applied directly to your quote.
The right gain depends on the right sizing : we set the battery capacity to your solar production and your consumption profile to maximise the share of self-consumed energy, without oversizing.
The details of prices, capacities and payback calculations can be found on our storage price & payback page. We handle the entire application : you pay nothing upfront and you fill in no form.
A few recent storage installations in Liège and its districts. Each project is handled by the same team, from the self-consumption study to commissioning.
Paired with a large PV system on the slopes. The daytime surplus is stored and returned in the evening : the self-consumption share rose from 35 % to nearly 70 %, back-up function activated for outages.
Voir le chantier →Storage added to an existing 4.5 kWp solar system. Sizing set to evening consumption ; connection with a bidirectional meter to optimise the prosumer tariff.
Voir le chantier →Terraced house fitted with 3.6 kWp : the battery captures the daytime surplus and provides back-up power on the essential circuits during an outage. Installed and connected in a single day.
Voir le chantier →5.0/5 · 1verified reviews
« Ajout d'une batterie à notre installation solaire existante. Le dimensionnement était juste, on consomme désormais le soir notre propre énergie. »
From the home battery to storage paired with solar, we tailor the capacity and technology to your production, your consumption and your budget. Explore each building block :
Residential storage that captures your daytime surplus to return it in the evening, with a back-up option on the essential circuits during an outage.
Discover the batteries →The ideal pairing for the high-production roofs on the Liège slopes : the battery maximises self-consumption against the Walloon prosumer tariff.
See solar storage →Lithium technology for a long lifespan, deep discharge and a small footprint, suited to terraced houses as well as villas.
Explore lithium →Yes, it is in fact in Liège, in Wallonia, that storage makes the most sense. With the bidirectional meter and the prosumer tariff, the energy fed back to the grid earns you almost nothing : every kWh stored and then reused at home avoids buying it back at the full rate. On a well-sized solar system, the gain often runs to several hundred euros per year. During the free study, we calculate your real payback at your address.
It all depends on your solar production and your evening consumption. In Liège, we generally size between 5 and 10 kWh for a household, by analysing your real profile rather than applying a ready-made rule. The goal is to maximise self-consumption without oversizing — an oversized battery never pays for itself.
Yes, that is the most common case in Liège. We pair the battery with your existing photovoltaic system, without replacing it : the study checks the compatibility of your inverter and we install, if needed, a hybrid inverter or a dedicated charge module. The installation and connection are done in a single day.
With the back-up function, yes : the battery can power your home’s essential circuits (lighting, fridge, internet box) for the duration of the outage. It is an option appreciated in Liège ; we activate and size it according to your priorities at installation.
Yes, completely : the visit to your home in Liège, the analysis of your production and your consumption, the battery sizing and the costed quote are free and with no obligation. You pay nothing until you have approved your project.
Tell us your address and your project : a Liège-based team calls you back, schedules the free self-consumption study and sizes your battery to optimise the prosumer tariff.