Power storage unit for the photovoltaic system | Viessmann UK
Example 2 with heat pump and electric vehicle. Household + heat pump + electric vehicle = 12,000 kWh. PV = 12 kWp _____ Power storage unit = 12 kWh Storage units that are too large or too small are uneconomical. If the power storage unit is oversized, it will store too much electrical energy without it actually being used.
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