solar panels on the roof in the south-holland city of leiden in the netherlands.

air background blue cell cells centrum church city cloud clouds cloudy dak dutch electriciteit electricity energie energy environment environmentally friendly generation green holland hooglandse kerk langebrug led leiden lucht milieu milieuvriendelijk netherlands opwekken opwekking outdoor paal paneel panel panelen panels renewable roof silicium silicon sky skyline solar solarcel southholland sun sunlight technology toren tower travel vriendelijk wolken zon zonne zonnecel zonnecellen zonnepaneel zonnepanelen