2021-06-23 Glass Fiber & Concrete Flywheel For Storage

This French company uses glass fiber reinforced flywheels for energy storage instead of steel. Quote:

<< Gennesseaux went on to say. “We are around 10 grams of CO2 per kWh, while lithium-ion batteries are around 40g CO2/kWh, at the same level as steel flywheels.”>>

Initially the flywheel will store 10 kWh. It’s buried underground. Steel flywheels cost about 200 Euros per kWh – concrete is less expensive – a few Euros – and uses common raw materials.


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