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13524630 - Rheidol hydroelectric power station
13732683 - Pumped storage hydroelectric plant, aerial photograph
13732679 - Pumped storage hydroelectric plant, aerial photograph
13732678 - Pumped storage hydroelectric plant, aerial photograph
13243770 - Hydroelectric dam in the Kariba Gorge
14079648 - World's largest hydroelectric dams, illustration
13243769 - Hydroelectric dam in the Kariba Gorge
12402613 - Energy production icons, illustration
12400288 - Energy icons, illustration
12400287 - Energy icons, illustration
12402611 - Energy production icons, illustration
12959740 - Energy generation,illustration
11704480 - Hydroelectric turbines
11715742 - Hydroelectric barrage,France
12400285 - Energy icons, illustration
11726927 - Pumped storage hydroelectric project
12400291 - Energy icons, illustration
11711555 - Hydroelectric power,diagram
11711554 - Hydroelectric power,diagram
11726926 - Pumped storage hydroelectric project
11691545 - WET-NZ wave energy converter being tested
11704481 - Hydroelectric turbines
11688801 - Hydroelectric power,19th century
11890467 - Hydroelectric generator
11618970 - Hydroelectric turbine,19th century
11652695 - Sautet hydroelectric dam,France
11618973 - Hydroelectric generators,19th century
12020264 - Hydroelectric Power Plant
11652696 - Sautet hydroelectric dam,France
11889797 - Energy sources,artwork
12072616 - Hydroelectric dam
12072622 - The Dalles hydroelectric dam
12970333 - Romney Weir hydroelectric power scheme
13495774 - Cross section of a hydroelectric power plant, Illustration
12970334 - Sandford Lock hydroelectric power scheme
11694717 - Hydroelectric power turbine
12288375 - Hydroelectric model town, 19th century
11694719 - Hydroelectric power turbine
11892698 - Hydroelectric power substation
11890439 - Hydroelectric generator
11553943 - Hydroelectric power station,Wales
11890448 - Hydroelectric power station,Scotland
11892696 - Hydroelectric power substation
11892697 - Hydroelectric power substation
11552376 - Hydroelectric power station,Canada
11588139 - Hydroelectric power,19th century
11633441 - Revelstoke hydroelectric dam
11890449 - Hydroelectric power station,Scotland
11694718 - Hydroelectric power turbine hall
12001130 - 'Hydroelectric Dam,Ozark,Arakansas'
11890459 - Hydroelectric dam,Canada
11890458 - Hydroelectric dam,Canada
11890440 - Hydroelectric generators
11755873 - Hydroelectric dam
11755827 - Hydroelectric dam
11755872 - Hydroelectric dam
12024990 - Tidal Generator
12058241 - Niagara Falls
12058235 - American Falls- Niagara Falls,New York
12072637 - Harry S. Truman Dam
13387424 - Construction of the Grand Coulee Dam, Washington, USA
13387423 - Construction of the Grand Coulee Dam, Washington, USA
13387426 - Workers drilling during construction of the Coulee Dam, USA
11890453 - Three Gorges Dam,China
11890454 - Three Gorges Dam,China
11890455 - Model of Three Gorges Dam,China
11890452 - Three Gorges Dam,China
11901281 - Construction of Three Gorges Dam,China
13524631 - Power station pipework
13952244 - Sustainable future, conceptual illustration
13522973 - Glen Canyon Dam, Arizona, USA
13522975 - Glen Canyon Dam, Arizona, USA
12961719 - Harnessing wave energy,19th Century illustration
13522974 - Glen Canyon Dam, Arizona, USA
12650470 - Glen Canyon Dam
12650471 - Glen Canyon Dam
13523040 - Glen Canyon Dam, Arizona, USA
13511707 - Archimedes screw hydropower at Radyr Weir, Wales
13522972 - Glen Canyon Dam and Glen Canyon Bridge, Arizona, USA
12650468 - Glen Canyon Dam
11700088 - Electricity pylon
11700078 - Stainless steel ropes
11713273 - Niagara Falls in winter
11700073 - Power station hydro turbines
11704475 - Storm clouds over Glen Canyon dam
11700087 - Electricity pylon
11713276 - Niagara Falls in winter
11700079 - Water pressure valve
11713281 - Niagara Falls in winter
11704479 - Low water levels in Lake Powell,USA
11700086 - Cruachan Power Station,Scotland,UK
11713282 - Niagara Falls in winter
11713275 - Niagara Falls in winter
11700081 - Stainless steel ropes
11713274 - Niagara Falls in winter
11700092 - Power station transformer
11700095 - Power station turbine water pipes
11700077 - Water pressure gauge
11700093 - Power station hydro turbines
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