Check out these free of charge power generator machine:
London rooftops - independent
Image by maistora
Energy expenses - what power costs? With oil rates like a roller-coaster (but utility firms behaving only like a coaster-coaster-coaSTERRRRR with their rates), the owners/occupants of this London building are taking no probabilities, and producing their own power from a free of charge resource :)
When really should we expect all roofs to look like this? (Pigeons beware!)
Published on WWO
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