
1) Energy conversion 2) Hydroelectric power
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https://www.crosswordclues.com/clue/hydropower

Hydro-power or water power (from the ύδωρ, `water` ) is power derived from the energy of falling water and running water, which may be harnessed for useful purposes. Since ancient times, hydro-power has been used for irrigation and the operation of various mechanical devices, such as watermills, sawmills, textile mills, dock cranes, domestic.....
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http://en.wikipedia.org/wiki/Hydropower

Electrical energy produced by falling or flowing water. See hydroelectric power plant.
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http://www.encyclo.co.uk/visitor-contributions.php

(Learning Modules / Geography / Geography of energy) Electrical power generated by the force of moving water. Hydroelectric power (H.E.P.) is normally associated with dams and reservoirs.
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http://www.encyclo.co.uk/visitor-contributions.php

Energy derived from the flow of water.
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http://www.encyclo.co.uk/visitor-contributions.php

Energy generated from water pressure
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http://www.encyclo.co.uk/visitor-contributions.php

hydropower Electric power generated using water power.
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http://www.wordinfo.info/words/index/info/view_unit/1009/12

Energy that is created by free-falling water
Found on
https://sciencetrek.org/sciencetrek/topics/green_energy/glossary.cfm

electricity created using the pressure of stored water; also known as hydroelectric power
Found on
https://sciencetrek.org/sciencetrek/topics/water/glossary.cfm

Using the energy in flowing water to make electricity.
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https://www.encyclo.co.uk/local/22830

The use of water to power machinery or make electricity. Water moves constantly through a vast global cycle, evaporating from lakes and oceans, forming clouds, precipitating as rain or snow, then flowing back down to the ocean. The energy of this water cycle, which is driven by the sun, can be tapped to produce electricity or for mechanical tasks l...
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https://www.encyclo.co.uk/local/22831

hydroelectric power.
Found on
https://www.infoplease.com/dictionary/hydropower
No exact match found.