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.

← Canton Grisons overview

Ranking · Data 2025 · Source: BFS

The greatest solar potential in canton Grisons

Name: Solar potential in canton Grisons (GR): full ranking (2025)
Creator: Bundesamt für Energie (BFE)

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	38'949
2	Davos	134 GWh	10'800
3	Klosters	80 GWh	4'473
4	Landquart	79 GWh	9'191
5	Ilanz/Glion	77 GWh	5'030
6	Scuol	76 GWh	4'572
7	Arosa	69 GWh	3'143
8	Vaz/Obervaz	63 GWh	2'742
9	Domat/Ems	63 GWh	8'286
10	St. Moritz	60 GWh	4'926
11	Surses	59 GWh	2'424
12	Lumnezia	59 GWh	2'072
13	Flims	51 GWh	2'939
14	Poschiavo	51 GWh	3'525
15	Breil/Brigels	49 GWh	1'713
16	Luzein	40 GWh	1'625
17	Obersaxen Mundaun	38 GWh	1'148
18	Samedan	38 GWh	2'913
19	Cazis	37 GWh	2'416
20	Zizers	37 GWh	3'589
21	Disentis/Mustér	37 GWh	2'080
22	Val Müstair	35 GWh	1'422
23	Laax	35 GWh	2'112
24	Bregaglia	35 GWh	1'578
25	Churwalden	34 GWh	2'147
26	Tujetsch	33 GWh	1'171
27	Maienfeld	32 GWh	3'193
28	Grüsch	32 GWh	2'161
29	Schiers	31 GWh	2'951
30	Albula/Alvra	30 GWh	1'313
31	Domleschg	29 GWh	2'219
32	Trimmis	28 GWh	3'363
33	Untervaz	28 GWh	2'675
34	Thusis	28 GWh	3'459
35	Pontresina	27 GWh	2'077
36	Safiental	27 GWh	963
37	Sumvitg	26 GWh	1'079
38	Trun	25 GWh	1'154
39	Celerina/Schlarigna	24 GWh	1'411
40	Zernez	24 GWh	1'579
41	Mesocco	24 GWh	1'420
42	Bonaduz	24 GWh	3'533
43	Malans	23 GWh	2'527
44	Rheinwald	22 GWh	576
45	Seewis im Prättigau	22 GWh	1'430
46	Roveredo	21 GWh	2'625
47	Silvaplana	20 GWh	1'089
48	Zuoz	20 GWh	1'218
49	Falera	20 GWh	627
50	Bergün Filisur	19 GWh	901
51	Valsot	19 GWh	811
52	Vals	18 GWh	949
53	San Vittore	18 GWh	912
54	Trin	17 GWh	1'525
55	Felsberg	16 GWh	2'833
56	Jenaz	16 GWh	1'145
57	Brusio	16 GWh	1'105
58	Grono	16 GWh	1'556
59	S-chanf	16 GWh	706
60	Sils im Engadin/Segl	15 GWh	708
61	Samnaun	15 GWh	755
62	Fideris	14 GWh	618
63	La Punt Chamues-ch	14 GWh	732
64	Rhäzüns	13 GWh	1'633
65	Lantsch/Lenz	12 GWh	528
66	Küblis	12 GWh	920
67	Schluein	12 GWh	612
68	Andeer	12 GWh	926
69	Muntogna da Schons	11 GWh	371
70	Scharans	10 GWh	838
71	Bever	10 GWh	607
72	Tamins	10 GWh	1'215
73	Sagogn	10 GWh	766
74	Medel	10 GWh	328
75	Sils im Domleschg	9 GWh	966
76	Avers	8 GWh	168
77	Furna	8 GWh	203
78	Jenins	8 GWh	948
79	Fläsch	8 GWh	868
80	Lostallo	8 GWh	850
81	Tschappina	8 GWh	140
82	Calanca	5 GWh	211
83	Zillis-Reischen	5 GWh	419
84	Conters im Prättigau	5 GWh	228
85	Masein	5 GWh	532
86	Madulain	5 GWh	197
87	Urmein	5 GWh	163
88	Flerden	5 GWh	254
89	Cama	5 GWh	691
90	Schmitten	5 GWh	209
91	Rothenbrunnen	4 GWh	312
92	Sufers	4 GWh	151
93	Fürstenau	3 GWh	349
94	Castaneda	3 GWh	262
95	Santa Maria in Calanca	3 GWh	119
96	Rossa	3 GWh	161
97	Soazza	3 GWh	332
98	Ferrera	3 GWh	82
99	Buseno	2 GWh	91
100	Rongellen	1 GWh	61

Bundesamt für Energie (BFE), retrieved 10.08.2026

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.