Light weight

When it comes to gravity batteries, pumped-hydro storage is the gold standard, but its cost and topography-specific limitations are driving innovations ranging from freight-train braking to super-dense liquids. Blake Matich asks whether any of the new technologies can punch above their weight.

Issue 02 - 2023 | Take charge in 2023

This successful 250 kW demonstrator project in Edinburgh featured a 15 m tower in which two 25-ton weights were tested for speed of response.

Photo: Gravitricity

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