Which municipality in canton Thurgau has the greatest solar potential?

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

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 Thurgau

National ranking →

Frauenfeld has the greatest solar-energy potential in canton Thurgau: its roofs could generate about 191 GWh of electricity a year. Next come Kreuzlingen (120 GWh) and Weinfelden (114 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	Frauenfeld	191 GWh	27'201
2	Kreuzlingen	120 GWh	23'550
3	Weinfelden	114 GWh	12'652
4	Amriswil	107 GWh	15'225
5	Arbon	95 GWh	16'407
6	Romanshorn	82 GWh	11'982
7	Aadorf	80 GWh	9'924
8	Egnach	72 GWh	5'259
9	Sirnach	61 GWh	8'387
10	Tägerwilen	60 GWh	5'558
11	Wängi	56 GWh	5'141
12	Bischofszell	54 GWh	6'438
13	Sulgen	49 GWh	4'186
14	Kemmental	49 GWh	2'924
15	Bürglen	49 GWh	4'252
16	Münchwilen	49 GWh	6'043
17	Erlen	47 GWh	4'028
18	Basadingen-Schlattingen	46 GWh	1'935
19	Eschlikon	42 GWh	4'913
20	Wigoltingen	42 GWh	2'674
21	Berg	41 GWh	3'757
22	Affeltrangen	41 GWh	2'890
23	Gachnang	40 GWh	4'778
24	Bussnang	40 GWh	2'599
25	Märstetten	38 GWh	3'067
26	Roggwil	37 GWh	3'471
27	Fischingen	36 GWh	3'145
28	Diessenhofen	35 GWh	4'157
29	Homburg	35 GWh	1'597
30	Kradolf-Schönenberg	35 GWh	3'935
31	Zihlschlacht-Sitterdorf	34 GWh	2'655
32	Müllheim	30 GWh	3'403
33	Ermatingen	30 GWh	3'799
34	Felben-Wellhausen	29 GWh	3'312
35	Bichelsee-Balterswil	29 GWh	3'034
36	Hüttwilen	29 GWh	1'776
37	Matzingen	28 GWh	3'355
38	Amlikon-Bissegg	28 GWh	1'423
39	Steckborn	27 GWh	4'036
40	Schlatt	27 GWh	1'857
41	Wäldi	26 GWh	1'179
42	Lengwil	25 GWh	1'814
43	Pfyn	25 GWh	2'259
44	Hauptwil-Gottshaus	25 GWh	2'121
45	Güttingen	24 GWh	1'905
46	Münsterlingen	24 GWh	3'726
47	Birwinken	23 GWh	1'452
48	Altnau	22 GWh	2'351
49	Langrickenbach	22 GWh	1'551
50	Wagenhausen	22 GWh	1'852
51	Thundorf	22 GWh	1'771
52	Eschenz	21 GWh	1'951
53	Salmsach	21 GWh	1'631
54	Wuppenau	20 GWh	1'215
55	Hefenhofen	20 GWh	1'344
56	Tobel-Tägerschen	20 GWh	1'751
57	Uesslingen-Buch	19 GWh	1'242
58	Herdern	19 GWh	1'182
59	Horn	18 GWh	3'228
60	Schönholzerswilen	17 GWh	872
61	Neunforn	17 GWh	1'170
62	Kesswil	17 GWh	1'004
63	Lommis	17 GWh	1'355
64	Rickenbach	16 GWh	3'078
65	Wilen	16 GWh	2'469
66	Warth-Weiningen	15 GWh	1'467
67	Stettfurt	15 GWh	1'298
68	Bottighofen	14 GWh	2'765
69	Uttwil	14 GWh	1'873
70	Bettwiesen	13 GWh	1'355
71	Salenstein	13 GWh	1'502
72	Hohentannen	13 GWh	670
73	Hüttlingen	13 GWh	898
74	Braunau	12 GWh	919
75	Raperswilen	11 GWh	429
76	Sommeri	10 GWh	696
77	Mammern	8 GWh	712
78	Dozwil	8 GWh	724
79	Berlingen	6 GWh	941
80	Gottlieben	3 GWh	359

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