Part of Marne (Grand Est), Cormontreuil counted 6,534 inhabitants as of the latest census.
OpenPVMapper's latest release puts Cormontreuil at 365 kWp of estimated rooftop PV capacity over 77 installations — 49th in Marne out of 597 communes with detections. The detections span 2019–2025. click here to see it on the map.
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