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Turbines of hydroelectricity power station generators inside the Hoover Dam fuel and power generation plant, Arizona, Nevada, USA.
Kurpsai Hydro station. Lower Naryn River Canyon near Toktogul in Kyrgyzstan. a Hydroelectric dam in central asia
The La Grande-1 generating station in Quebec, Canada
Inga Falls, Democratic Republic of Congo - December 09, 2014: The complex of the Inga Dams, two hydroelectric dams connected to one of the largest waterfalls in the world, Inga Falls (former Livingstone Falls). They are located in the western Democratic Republic of the Congo and 140 miles southwest of Kinshasa. the Inga dam is Africas largest power plant and there are currently plans to build a third Inga dam, which would make the complex to the world's largest hydroelectric project.
Aerial view of a small hydroelectric power plant located on the beautiful Soca river. Renewable energy is key to saving the environment. Sunset view.
Hydroelectric power plant in Tuscany, Italy
Volkhov hydroelectric plant is hydroelectric station on the Volkhov River, Leningrad Oblast, Russia
航拍水力發電站大壩
Close-up of a large dam on a river, water conservancy project facility
Wastewater canal or waterway for water treatment management in Industrial estate, Industrial and environment concept
Hydroelectric power plant from above in Germany.
An old hydropower plant that flows into the river and all around green nature
In the evening at Khao Yai Thiang
View on giant gantry cranes to hydroelectric power station of Krasnoyarsk dam located on the Yenisey River near Krasnoyarsk in Divnogorsk, Russia.
Industrial Cooling Tower
Row of the tops of indoor hydro-power generators working at a dam.  The huge turbines in these generators turn as the water blasts through, creating electricity.
Kiew Lom dam in Lampang province, Thailand.
Distribution transformer substation in Astoria, Queens, USA.
Hydroelectric poerplan built in Nam Theun river, tributary of Mekong river
Meissen, Saxony, Germany - 08 Sep 2015: The Hydroelectric on Elbe river in Saxony, Germany
Dam on Soca River, Primorska, Slovenia, Europe.
Hengsha Island, Shanghai - the sea under the blue sky and white clouds
Peterborough, Canada.
Aerial view of a hydroelectric power station with solar panels on rooftop and adjacent Power Substation on a sunny day, surrounded by autumn foliage.
Morning scenery at Kiew Lom Dam, Lampang, Thailand. Hydroelectric dam, floodgate with water flowing through the gate. Dam with hydroelectric power plant and irrigation.
Water dam for Electricity Industry  of the hydroelectric power station on the blue sky background summer sunny day.
Tri An hydropower plant is built on Dong Nai river, flows through Vinh Cuu district, Dong Nai province, 65 km northeast of Ho Chi Minh City.\n\nThe plant was built with the financial and technological support of the Soviet Union since 1984, generating unit 1 on 30/4/1988 and inaugurated in 1991.
View across large wide river Nile in Egypt through rural countryside landscape with dam at Edfu
Pipeline and cement building wall of chemical plant under construction
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