Unconventional “Hydraulic Hydro Storage” System Offers Energy Storage for the Grid on a Grand Scale

Read the full story from the Worldwatch Institute.

One of the main barriers to the diffusion of renewable energy sources such as wind and solar power is their inherent variability. If excess energy produced could be stored cheaply and used during times of lower production, this issue could be largely mitigated. Several technologies are under development as possible options for storing energy from the grid, including batteries that store energy in chemicals, mechanical flywheels that store energy as rotational energy, and hydroelectric dams that convert mechanical energy into electrical energy by retaining and channeling rivers.

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