Water Power

Articles

Climate Change-Related Droughts Dent Progress on Energy Emissions 1023 - Hyropower output falls during droughts.  The demand gap is filled too often by fossil fuels.  These have their own problems, since cooling water is usually hotter druing a drought.  The output of thermal power plants is based on the difference between combustion termperature and cooling (water) temperature.  Warmer cooling water makes the thermal power plant less efficient at producing electricity.

Hydropower Reservoirs, Once Called Clean Energy, Are ‘Giant Methane Factories’ 0723 - Vegetation submerged by dams rots, without oxygen.

Big Power Shortfall Looms After Quebec Wooed US With Cheap Hydro 0423

As Projects Decline, the Era of Building Big Dams Draws to a Close 0423

Hydropower Could Help Poorer Nations Decarbonize, with Little Environmental Impact 0123

Low Water Levels Have Created an Energy Crisis at Africa’s’s Largest Dam 0123

Europe’s Energy Risks Go Beyond Gas 1122 - Unprecedented heat and drought spurred on by climate change and 3 straight years of La Niña also became a major setback for hydroelectric power.  Rivers in southern Europe reached record lows.  The lack of hydro and nuclear power was a real problem amid the gas crisis, due to Russia's invasion of Ukraine.  If these 2 sources were at the normal level, then Europe probably would not have needed so much gas.
    Europe is warming around twice as fast as the rest of the world.  The glaciers that help store and release meltwater are diminishing quickly, and hot, dry summers like this year’s could become more common....  Global warming would lead to decreased annual stream flows in Southern Europe by the end of the century, affecting hydroelectric power, but suggested Northern Europe would see increased flows.
    In 2017, wind surpassed hydroelectricity as the largest renewable source of power for the European Union.

The World’s Biggest Source of Clean Energy Is Evaporating Fast 1022

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Articles

Tidal Power’s Fickle Future 0423 - "Of their 978 theoretical estuaries, a total of 54 had currents fast enough to drive tidal turbines.  This number dropped to 47 in simulations with one meter of sea level rise.  With 2 meters of sea level rise, it fell to 40."

The World Needs More Gigantic Sea Dams for Tidal Power 1022

Giant Deep Ocean Turbine Trial Offers Hope of Endless Green Power 0522 - Harness ocean currents 30-50 meters deep.

Harnessing the Ocean’s Energy to Power Homes, Airplanes and Distilleries 1221 - tidal power, focus in Scotland

Ocean Energy About to Ride a Wave 0221 - wave power and tidal power

Capturing the Green Energy of the Deep Blue Sea 0620 - harnessing the power of the Gulf Stream ocean current 

Researchers Are Closer to Harvesting Osmotic Energy from Salt / Fresh Water 1219

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