10. Storing electricity and thermal energy
Energy storage is the weak point in the energy sector. However, it is of great strategic and economic importance. While 85 g of petrol contain 1 kWh, it takes around 25 kg of lead-acid battery to obtain the same energy, and 3,600 L of water at a height of 100 m to obtain 1 kWh by turbining it.
Electricity storage
[BE 8 090]
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Storing electricity and thermal energy