Loire-Atlantique (44) · DeepPVMapper Data

Loire-Atlantique, in Pays de la Loire, with Nantes as its préfecture, counted 1,487,570 inhabitants as of 2021.

The latest OpenPVMapper release has identified 361.1 MWp of rooftop PV across 25 254 installations in Loire-Atlantique — the 5th département in France and 1st out of 5 within Pays de la Loire by installed capacity. Detections span 2020–2025. 3% of installations in Loire-Atlantique are confirmed by more than two independent sources. To explore every detection in Loire-Atlantique, click here to see it on the map.

25 254 PV systems detected

361.1 MWp Estimated installed capacity

#5 by installed capacity, out of 96 départements

Source composition

DPVM only · 36%DPVM + FRPV · 27%FRPV only · 20%OSM only · 12%DPVM + FRPV + OSM · 3%DPVM + OSM · 1%FRPV + OSM · 1%

Installed capacity distribution

Installed capacity share over time

2025

Cumulative share of installed capacity by grid cell, 2020–2025. Drag the slider to see it build up over time.

Cities in Loire-Atlantique ranked by installed capacity

1 Nantes 825 systems 7.1 MWp 2 Carquefou 347 systems 6.8 MWp 3 Rezé 477 systems 5.7 MWp 4 Nort-sur-Erdre 193 systems 4.1 MWp 5 Saint-Herblain 338 systems 4.0 MWp 6 Blain 233 systems 4.0 MWp 7 Saint-Nazaire 442 systems 3.6 MWp 8 Guérande 279 systems 3.5 MWp 9 Pornic 430 systems 3.1 MWp 10 Châteaubriant 193 systems 3.1 MWp 11 Ancenis-Saint-Géréon 214 systems 3.0 MWp 12 Bouguenais 343 systems 2.2 MWp 13 Couëron 269 systems 2.2 MWp 14 Vertou 425 systems 1.7 MWp 15 La Chapelle-sur-Erdre 218 systems 1.6 MWp 16 Pontchâteau 204 systems 1.4 MWp 17 Orvault 229 systems 1.3 MWp 18 Treillières 150 systems 1.3 MWp 19 Saint-Brevin-les-Pins 223 systems 1.3 MWp 20 Saint-Sébastien-sur-Loire 265 systems 838 kWp 21 Pornichet 132 systems 820 kWp 22 La Baule-Escoublac 171 systems 680 kWp 23 Sainte-Luce-sur-Loire 116 systems 639 kWp 24 Basse-Goulaine 183 systems 581 kWp 25 Thouaré-sur-Loire 106 systems 475 kWp

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