Converting energy into easily stored fuels is a good solution:
- Water electrolysis and hydrogen production, potentially as intermediate storage (conversion utilisation rate of up to 63%)
- Conversion into synthetic methane (3 H2 + CO2 → CH4 + 2 H2O), also called P2G (conversion efficiency rate of up to 57%). The methane is stored in subsoil storage tanks with almost no losses, resulting in an expenditure factor of 1.75 kWh/kWh.
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