Home

Loire

Auvergne-Rhône-Alpes

Loire is a département of Auvergne-Rhône-Alpes, with Saint-Étienne as its préfecture. As of 2021 it counted 774,133 inhabitants.

18 042 rooftop PV installations totalling 104.4 MWp have been identified in Loire by OpenPVMapper, ranking it 54th nationally and 9th out of 12 in Auvergne-Rhône-Alpes. These detections span 2019–2025. 0% of installations in Loire are confirmed by more than two independent sources. Click here to see it on the map.

18 042 PV systems detected
104.4 MWp Estimated installed capacity
#54 by installed capacity, out of 96 départements

Source composition

DPVM only · 43%DPVM + FRPV · 41%FRPV only · 16%OSM only · 1%FRPV + OSM · 0%DPVM + FRPV + OSM · 0%DPVM + OSM · 0%

Installed capacity distribution

log scaleP1P2P3P4P5

Installed capacity share over time

2025
Saint-ÉtienneSaint-ChamondRoanneFirminyMontbrison

Cumulative share of installed capacity by grid cell, 2019–2025. Drag the slider to see it build up over time.

Cities in Loire ranked by installed capacity

1 Saint-Étienne 781 systems 5.4 MWp 2 Saint-Chamond 552 systems 3.5 MWp 3 Andrézieux-Bouthéon 183 systems 2.3 MWp 4 Roanne 256 systems 1.6 MWp 5 Montbrison 311 systems 1.5 MWp 6 Saint-Just-Saint-Rambert 404 systems 1.4 MWp 7 Sury-le-Comtal 199 systems 1.4 MWp 8 Roche-la-Molière 200 systems 1.2 MWp 9 Rive-de-Gier 174 systems 1.1 MWp 10 Firminy 181 systems 1.1 MWp 11 Saint-Priest-en-Jarez 129 systems 1.0 MWp 12 Mably 185 systems 1.0 MWp 13 Feurs 169 systems 1.0 MWp 14 La Talaudière 116 systems 996 kWp 15 Le Chambon-Feugerolles 178 systems 990 kWp 16 Veauche 265 systems 900 kWp 17 Riorges 202 systems 872 kWp 18 Saint-Jean-Bonnefonds 181 systems 868 kWp 19 Sorbiers 236 systems 853 kWp 20 La Ricamarie 106 systems 690 kWp 21 Unieux 180 systems 687 kWp 22 Saint-Galmier 149 systems 662 kWp 23 Le Coteau 102 systems 597 kWp 24 Villars 108 systems 512 kWp 25 Saint-Genest-Lerpt 100 systems 311 kWp

Don’t see your commune above? It may not have enough confirmed detections yet — let us know which one you had in mind.

See something odd here?

Report it — you'll help improve data quality for Loire (42) and across France.

← Back to Auvergne-Rhône-Alpes ← Back to all départements