Which municipality in canton Grisons has the greatest solar potential?

Chur, whose roofs could generate about 191 GWh of electricity a year (2025) — the greatest modelled roof potential of any municipality in canton Grisons.

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 Grisons

National ranking →

Chur has the greatest solar-energy potential in canton Grisons: its roofs could generate about 191 GWh of electricity a year. Next come Davos (134 GWh) and Klosters (80 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	Chur	191 GWh	39'753
2	Davos	134 GWh	10'738
3	Klosters	80 GWh	4'499
4	Landquart	79 GWh	9'281
5	Ilanz/Glion	77 GWh	5'101
6	Scuol	76 GWh	4'599
7	Arosa	69 GWh	3'144
8	Vaz/Obervaz	63 GWh	2'703
9	Domat/Ems	63 GWh	8'428
10	St. Moritz	60 GWh	5'027
11	Surses	59 GWh	2'494
12	Lumnezia	59 GWh	2'056
13	Flims	51 GWh	2'954
14	Poschiavo	51 GWh	3'494
15	Breil/Brigels	49 GWh	1'738
16	Luzein	40 GWh	1'706
17	Obersaxen Mundaun	38 GWh	1'151
18	Samedan	38 GWh	2'926
19	Cazis	37 GWh	2'551
20	Zizers	37 GWh	3'827
21	Disentis/Mustér	37 GWh	2'163
22	Val Müstair	35 GWh	1'427
23	Laax	35 GWh	2'104
24	Bregaglia	35 GWh	1'602
25	Churwalden	34 GWh	2'075
26	Tujetsch	33 GWh	1'186
27	Maienfeld	32 GWh	3'344
28	Grüsch	32 GWh	2'189
29	Schiers	31 GWh	3'017
30	Albula/Alvra	30 GWh	1'310
31	Domleschg	29 GWh	2'233
32	Trimmis	28 GWh	3'472
33	Untervaz	28 GWh	2'676
34	Thusis	28 GWh	3'453
35	Pontresina	27 GWh	2'077
36	Safiental	27 GWh	972
37	Sumvitg	26 GWh	1'053
38	Trun	25 GWh	1'136
39	Celerina/Schlarigna	24 GWh	1'410
40	Zernez	24 GWh	1'586
41	Mesocco	24 GWh	1'432
42	Bonaduz	24 GWh	3'618
43	Malans	23 GWh	2'530
44	Rheinwald	22 GWh	598
45	Seewis im Prättigau	22 GWh	1'485
46	Roveredo	21 GWh	2'711
47	Silvaplana	20 GWh	1'108
48	Zuoz	20 GWh	1'210
49	Falera	20 GWh	651
50	Bergün Filisur	19 GWh	894
51	Valsot	19 GWh	824
52	Vals	18 GWh	948
53	San Vittore	18 GWh	946
54	Trin	17 GWh	1'574
55	Felsberg	16 GWh	2'849
56	Jenaz	16 GWh	1'150
57	Brusio	16 GWh	1'103
58	Grono	16 GWh	1'634
59	S-chanf	16 GWh	736
60	Sils im Engadin/Segl	15 GWh	693
61	Samnaun	15 GWh	761
62	Fideris	14 GWh	634
63	La Punt Chamues-ch	14 GWh	763
64	Rhäzüns	13 GWh	1'607
65	Lantsch/Lenz	12 GWh	534
66	Küblis	12 GWh	913
67	Schluein	12 GWh	611
68	Andeer	12 GWh	912
69	Muntogna da Schons	11 GWh	378
70	Scharans	10 GWh	846
71	Bever	10 GWh	627
72	Tamins	10 GWh	1'225
73	Sagogn	10 GWh	777
74	Medel	10 GWh	330
75	Sils im Domleschg	9 GWh	954
76	Avers	8 GWh	166
77	Furna	8 GWh	200
78	Jenins	8 GWh	979
79	Fläsch	8 GWh	886
80	Lostallo	8 GWh	871
81	Tschappina	8 GWh	148
82	Calanca	5 GWh	213
83	Zillis-Reischen	5 GWh	440
84	Conters im Prättigau	5 GWh	235
85	Masein	5 GWh	538
86	Madulain	5 GWh	206
87	Urmein	5 GWh	162
88	Flerden	5 GWh	253
89	Cama	5 GWh	735
90	Schmitten	5 GWh	213
91	Rothenbrunnen	4 GWh	337
92	Sufers	4 GWh	146
93	Fürstenau	3 GWh	353
94	Castaneda	3 GWh	262
95	Santa Maria in Calanca	3 GWh	113
96	Rossa	3 GWh	172
97	Soazza	3 GWh	320
98	Ferrera	3 GWh	74
99	Buseno	2 GWh	102
100	Rongellen	1 GWh	55

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 Grisons has the greatest solar potential?: Chur, whose roofs could generate about 191 GWh of electricity a year (2025) — the greatest modelled roof potential of any municipality in canton Grisons.
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.