Minnesota utilities are considering using Mesabi open pit mines to as a way to store excess energy created by wind farms.
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GigaOm provides a useful overview, noting “pumped storage is currently the dominant—and nearly only—grid-scale storage solution out there,” then extrapolates into just how much pumped hydro storage there could be and what it would entail. Pumped hydro is a time-tested way to store energy. Excess power is used to pump water uphill into a storage area, usually a lake, then released as needed to power turbines. Germany plans to use wind energy to pump water into abandoned coal mines inside a mountain for later use. The water will be continuously [...] Voith Hydro pump used in Kopswerk II (Image credit: Voith Hydro) Pumped storage hydro pumps water into a holding area using excess energy from the grid, then releases the water to power turbines when power is needed. A new pumped hydro plant in Austria can do both simultaneously and can generate 525 MW of [...] |  | ||||
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