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During periods of high electrical demand, the stored water is released through turbines to produce electric power. Pumped-storage hydroelectricity allows energy from intermittent sources (such as solar , wind , and other renewables) or excess electricity from continuous base-load sources (such as coal or nuclear) to be saved for periods of ...
Hydroelectricity, or hydroelectric power, is electricity generated from hydropower (water power). Hydropower supplies 15% of the world's electricity , almost 4,210 TWh in 2023, [ 1 ] which is more than all other renewable sources combined and also more than nuclear power . [ 2 ]
Hydropower (from Ancient Greek ὑδρο-, "water"), also known as water power, is the use of falling or fast-running water to produce electricity or to power machines. This is achieved by converting the gravitational potential or kinetic energy of a water source to produce power. [1] Hydropower is a method of sustainable energy production.
During periods of low demand and excess generation, the generators run in reverse and pump water from Nickajack Lake back up to the top of the mountain, where it is stored until needed later. This process repeats continuously, serving as peak power generation.
Electricity can be directly stored thermally with a Carnot battery. A Carnot battery is a type of energy storage system that stores electricity in heat storage and converts the stored heat back to electricity via thermodynamic cycles (for instance, a turbine). While less efficient than pumped hydro or battery storage, this type of system is ...
The stored potential energy is later converted to electricity that is added to the power grid, even when the original energy source is not available. In pumped hydro systems, energy from the source is used to lift water upward against the force of gravity, giving it potential energy that is later converted to electricity provided to the power grid.
The lower reservoir stores 150,000 cubic meters of water. The stored water acts as a battery. The maximum storage capacity is 270 MWh. When demand rises and there is not enough wind power, the water will be released to four hydroelectric turbines with a total capacity of 11 MW." [17] [18]
The Ludington Pumped Storage Plant is a hydroelectric plant and reservoir in Ludington, Michigan.It was built between 1969 and 1973 at a cost of $315 million and is owned jointly by Consumers Energy and DTE Energy and operated by Consumers Energy.
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