Welsh sheep farmer Howell Williams and his sheep dog Ben accessing the generator room to the 15kW micro hydro power plant producing electricity at Abercrave Farm on the Brecon Beacons, Wales.

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Photo credit: © Adam Murphy / Alamy / Afripics
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Keywords: aitchison, ashden, beacons, brecon, electricity, energy, engineer, environmental, farm, farmer, green, hydro, power, sheep, sustainable, technology, wales, water