Solar panels in Lille in 2026:
prices, profitability and grants
Lille (59) receives an irradiation of 1160 kWh/m²/year, in climate zone H1. Here is everything you need to know before investing in solar.
Sunshine in Lille
Lille is in climate zone H1 (North), with an annual irradiation of 1160 kWh/m²/year according to PVGIS data (European Commission, JRC). Ensoleillement modeste du Nord, mais des prix compétitifs et un réseau d'installateurs dense rendent l'autoconsommation viable.
For a 3 kWp installation (6 to 8 panels), that means around 3,080 kWh of solar output per year, with a peak in June-July and a drop in December-January, typical of the zone.
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Solar already installed in Lille
At the end of 2025, the national register of electricity generation installations listed 352 solar installations connected to the grid in Lille, with a total capacity of 5.2 MW. Of these, 330 are under 36 kW: they are mostly the roofs of private homes and small buildings.
The number of installations has been multiplied by 1.8 in five years: there were 194 at the end of 2020.
Over one year, these installations fed 1.7 GWh into the grid. This figure only counts the surplus that was sold: the electricity consumed on site by the households with panels is not included.
Source: Registre national des installations de production et de stockage d'électricité (RTE), installations raccordées au réseau d'Enedis, open data Enedis, Licence Ouverte 2.0, editions closed on 31 December 2020 and 2025. Installations under 36 kW only appear there in aggregate, with no address-level detail.
Price of a solar installation in Lille
The cost of a residential photovoltaic installation in Lille varies with the capacity, the type of roof and the installer. The prices below are indicative for the 2026 market, with 5.5% VAT subject to conditions (see below) or 20% if a condition is not met.
| System size | Gross price incl. VAT | CRE bonus | Net price | Recommended profile |
|---|---|---|---|---|
| 3 kWp · 6-8 panels | 6,600 € | Abolished | 6,600 € | Household of 2-3 people · ~3,500 kWh/year |
| 6 kWp · 12-14 panels | ~11,484 € | −480 € | ~11,004 € | Household of 4-5 people · ~6,000 kWh/year |
| 9 kWp · 18-20 panels | ~16,236 € | −720 € | ~15,516 € | Large household or EV · ~8,500 kWh/year |
Profitability in Lille: the full calculation
With 3,080 kWh/year produced and about 70% self-consumption (a household at home during the day or appliances scheduled for solar hours), here is how the savings break down for a household in Lille:
Grants available in Lille (59)
In 2026, residents of Lille can benefit from several grants that can be combined:
- CRE self-consumption bonus: abolished since 1 June 2026 for all new installations.
- 5.5% reduced VAT: under 5 cumulative conditions: capacity ≤ 9 kWp, residential building (regardless of its age), PPE2-V2 certification (carbon footprint below 530 kg CO2/kWp), compliant heavy metals content, and active EMS/SGE mandatory since 1 January 2026. If a condition is missing: 20% VAT on the whole installation. Batteries are always at 20%. Check eligibility with your RGE installer.
- MaPrimeRénov': does not cover photovoltaic panels that generate electricity. This scheme funds solar thermal (hot water), insulation, heat pumps and renewable heating, not PV.
- Hauts-de-France regional grants: some regions and local authorities offer additional support. Ask your ADIL or the local Espace Info Énergie (energy advice centre).
- Dedicated financing: ask your bank about financing offers dedicated to renewable energy.
| Aid | Amount (3 kWp) | Condition | Procedure |
|---|---|---|---|
| CRE self-consumption bonus | Abolished | Abolished since 1 June 2026 | Through an RGE installer |
| 5.5% VAT | ~363 € saved | 5 cumulative conditions (including an active EMS) | Check on the quote |
| MaPrimeRénov' | ❌ Not applicable | PV not eligible (solar thermal only) | — |
| Hauts-de-France grants | Variable | Depending on the local authority | ADIL / Espace Info Énergie |
Frequently asked questions: Lille
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