Energy Vault Proposes An Energy Storage System Using Concrete Blocks

Clean Technica: Energy storage is the key to renewables. A decade ago, solar panels could make electricity during the day, which was great. But in most parts of the world, the highest demand for electricity occurs in the late afternoon and early evening — times when solar panels produce little electricity. Wind turbines are wonders of modern engineering but of little use if there is no wind to turn their blades.

Being able to store electricity now for use later is what makes renewable energy capable of providing reliable baseload power at all times of day or night. How long that storage ability lasts is one of the primary ways that energy storage systems are classified. Cost, of course, is another.

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