Pete Cairns / Hydro electric dam on Loch Laggan, Scotland, UK

Ashley Cooper / Footbridge over the River Derwent, collapsed during flooding, Workington, England, UK, November 2009.

Ashley Cooper / House with home made small scale hydro turbine to provide electricity, Isle of Eigg, Scotland, UK, May 2012.

Ashley Cooper / Sloy hydro power station on the shores of Loch Lomond, Scotland, UK. May 2012.

Ashley Cooper / Renewable energy sources - wind power, solar power and Sloy hydro power station on the shores of Loch Lomond, Scotland, UK. May 2012.

Ashley Cooper / Fljotsdalur hydro power station, Karahnjukar a new controversial hydro electricity project, which flooded a large area of wilderness. North East Iceland, September 2010.

Ashley Cooper / Settle hydro electricity scheme, a small scale hydro electricity projet, River Ribble, Yorkshire, England, UK, October.

Ashley Cooper / Rainbow over water flowing out of the Karahnjukar dam and Halslon reservoir, a massive new controversial hydro electricity project in North East Iceland. It was created by damming the Jokuls a Dal riv...

Ashley Cooper / Rainbow over water flowing out of the Karahnjukar dam and Halslon reservoir, a massive new controversial hydro electricity project in North East Iceland. It was created by damming the Jokuls a Dal riv...

Ashley Cooper / Rainbow over water flowing out of the Karahnjukar dam and Halslon reservoir, a massive new controversial hydro electricity project in North East Iceland. It was created by damming the Jokuls a Dal riv...

Ashley Cooper / Man standing on cliff near water flowing out of the Karahnjukar dam and Halslon reservoir, a massive new controversial hydro electricity project in North East Iceland. It was created by damming the Jo...

Ashley Cooper / Water flowing out of the Karahnjukar dam and Halslon reservoir, a massive new controversial hydro electricity project in North East Iceland. It was created by damming the Jokuls a Dal river and floodi...