Which municipality in canton Geneva has the greatest solar potential?

Geneva, whose roofs could generate about 420 GWh of electricity a year (2025) — the greatest modelled roof potential of any municipality in canton Geneva.

Does this mean the municipality actually produces this much solar power?

No. It is the modelled potential of the available roof surfaces — the electricity they could generate if fully used. Actual installed photovoltaics produce far less. The figure comes from the BFE solar model and scales with how much roof area a municipality has.

Ranking · Data 2025 · Source: BFS

The greatest solar potential in canton Geneva

National ranking →

Geneva has the greatest solar-energy potential in canton Geneva: its roofs could generate about 420 GWh of electricity a year. Next come Meyrin (149 GWh) and Vernier (146 GWh). This is modelled roof potential — largest where there is the most roof area, not current generation. Source: BFE.

Ranking

BFE · 2025

Rank	Municipality	Roof potential	Residents
1	Geneva	420 GWh	211'152
2	Meyrin	149 GWh	27'380
3	Vernier	146 GWh	38'769
4	Lancy	106 GWh	37'520
5	Satigny	100 GWh	4'811
6	Plan-les-Ouates	93 GWh	12'644
7	Bernex	85 GWh	11'134
8	Carouge	79 GWh	22'783
9	Le Grand-Saconnex	73 GWh	12'775
10	Veyrier	66 GWh	12'225
11	Thônex	62 GWh	16'940
12	Collonge-Bellerive	61 GWh	8'655
13	Chêne-Bougeries	48 GWh	14'947
14	Versoix	45 GWh	14'060
15	Onex	38 GWh	19'101
16	Cologny	37 GWh	6'147
17	Troinex	35 GWh	3'358
18	Perly-Certoux	31 GWh	3'296
19	Pregny-Chambésy	28 GWh	4'249
20	Chêne-Bourg	27 GWh	9'747
21	Confignon	24 GWh	4'565
22	Vandœuvres	24 GWh	3'087
23	Jussy	20 GWh	1'253
24	Bellevue	20 GWh	4'111
25	Bardonnex	19 GWh	2'528
26	Anières	18 GWh	2'589
27	Genthod	18 GWh	2'814
28	Meinier	18 GWh	2'108
29	Corsier	16 GWh	2'270
30	Puplinge	15 GWh	2'702
31	Dardagny	15 GWh	1'846
32	Collex-Bossy	12 GWh	1'673
33	Avusy	11 GWh	1'425
34	Aire-la-Ville	11 GWh	1'161
35	Avully	11 GWh	1'758
36	Choulex	11 GWh	1'232
37	Cartigny	9 GWh	1'063
38	Chancy	9 GWh	1'653
39	Russin	7 GWh	554
40	Céligny	7 GWh	837
41	Hermance	6 GWh	1'221
42	Presinge	6 GWh	714
43	Soral	6 GWh	935
44	Laconnex	6 GWh	710
45	Gy	5 GWh	582

Swiss Federal Office of Energy (SFOE), retrieved 24.09.2026

How we measure this

BFE

Modelled annual electricity that rooftop photovoltaics could produce across the whole municipality, in gigawatt-hours per year, from the BFE «Solarenergiepotenziale der Schweizer Gemeinden» model (2025 snapshot). It is a potential, not installed capacity or actual generation, and it scales with roof area — so large towns lead simply because they have more roofs. It is a rolling model snapshot, not an annual survey. The companion roofs-plus-façades scenario adds vertical surfaces.

Frequently asked questions

Which municipality in canton Geneva has the greatest solar potential?: Geneva, whose roofs could generate about 420 GWh of electricity a year (2025) — the greatest modelled roof potential of any municipality in canton Geneva.
Does this mean the municipality actually produces this much solar power?: No. It is the modelled potential of the available roof surfaces — the electricity they could generate if fully used. Actual installed photovoltaics produce far less. The figure comes from the BFE solar model and scales with how much roof area a municipality has.