Solar water heater from plastic bottles

A retired mechanic in Brazil, José Alano, has invented a simple, effective solar hot water heater using discarded plastic bottles. The idea has spread and there are now thousands of them installed.

The alternative water heater can provide power savings of up to 30 per cent, but apart from that, Alano notes that every recycled solar water heater built also means less plastic bottles and cartons finding their way to landfill.

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