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Renewables produce when it is windy and sunny, not when demand calls.
The world has millions of abandoned mines, mostly un-rehabilitated.
Green Gravity’s technology raises and lowers heavy weights in a mine shaft to capture and release the gravitational energy of the weights.
Provides short or mid duration storage or grid ancillary services.
Low noise, small land use, no water, chemicals, or destruction of farmland. Our technology can be fully recycled, unlike battery options.
Locally sourced materials, supply chain and workforce create economic value in the local community.
Offering attractive economics due to reuse of infrastructure, high efficiency, low operating and maintenance costs and long life of the asset.
Our system does not degrade, meaning we invest once to match long run energy security needs, avoiding the costly performance degradation of batteries.
Radically accelerating the world’s renewable transition