Build the Powervault you need for your home

Choose the capacity that suits you

Powervault 3 is modular and can store from 4.1kWh to 20.5kWh. Powervault 3^eco is also modular and can store from 3.9kWh to 7.9kWh.

Battery technology

Powervault 3 uses high-performance Lithium-polymer (Li-MNC) cells, which offer a long-life and a 10-year warranty. Powervault 3^eco uses recycled Lithium-manganese-oxide (LMO) cells from electric vehicles, which are low-cost and come with a 3-year warranty.

Available capacities:
4.1, 8.2, 12.3, 16.4 and 20.5kWh
Available capacities:
3.9, 5.9 and 7.9kWh

Energy capacity

Select the capacity that suits your needs. Take into account the size of your solar system, the energy tariff you are on, and the size and profile of your household consumption. It is possible to buy a lower capacity Powervault 3 or Powervault 3^eco today and increase its capacity in future. Please contact Powervault direct if you need help selecting the right capacity for your home.

More capacities are available with the standard Powervault 3.

Energy calculator

Please input your details to calculate which battery capacity is most suited to you and your home.

How much is your annual electricity bill? How much is your electricity tariff (Pence/kWh)? If you are unsure of your tariff, the UK average is 12p/kWh. What is your PV Capacity (kWp)? Are you at home during the day? Do you have Economy 7?