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Powervault works with accredited solar installers across the United Kingdom to ensure that every installation is installed correctly and efficiently.

Powervault models

Battery technology

Powervault uses either Lead Acid or Lithium-ion Phosphate battery technology to store energy in your home. The Lead Acid Powervault has a lower upfront cost but doesn't last as long as the Lithium-ion Phosphate Powervault. The Lead Acid Powervault's batteries have a lifetime of 5 – 7 years. The Lithium-ion Phosphate Powervault's cells have a lifetime of 11 – 13 years. It is possible to buy a Lead Acid Powervault now and, in 5 – 7 years when the batteries reach the end of their useful life, then upgrade to Lithium-ion Phosphate cells.

  • Available capacities:
    2, 4 and 6 kWh

  • Available capacities:
    2.5, 3 and 4 kWh

Unsure of which battery technology is right for you, use our product calculator

Energy capacity

Depending on the battery technology that you choose, Powervault can store from 2kWh to 6kWh of usable AC energy. You should select the capacity you will use fully, which depends on the amount of energy your solar PV system generates during the day and the portion that is typically exported to the Grid; Powervault will help you by storing the excess energy that is sent to the Grid.

More capacities are available using Lithium-ion batteries.

If you need help selecting the capacity that is right for you and your home, please use our Energy Calculator.

Energy calculator

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

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Powervault

Lithium-ion 2.0kWh

This is our smallest Lithium-ion Phosphate product, which is designed to store up to 2kWh of energy in your home. You can increase the capacity to either 4kWh or 6kWh using more Lithium-ion Phosphate battery technology at any point in the future.

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Powervault

Lithium-ion 4.0kWh

This is our most popular Lithium-ion Phosphate product, which is designed to store up to 4kWh of energy in your home. You can increase the capacity to 6kWh using more Lithium-ion Phosphate battery technology at any point in the future.

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Powervault

Lithium-ion 6.0kWh

This is our largest Lithium-ion Phosphate product, which is designed to store up to 6kWh of energy in your home.

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Powervault

Lead Acid 2.5kWh

This is our entry-level capacity using Tubular Gel Lead Acid batteries. Our Tubular Gel batteries are designed for customers who want to store both solar energy during the day and cheap, off-peak electricity (e.g. Economy 7) in the evening. You can increase the capacity to 4kWh by adding another set of our Tubular Gel batteries to the Powervault at any point in the future. You can also upgrade to Lithium-ion Phosphate battery technology and store up to 6kWh of energy in your home at any point in the future. 

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Powervault

Lead Acid 3.0kWh

This Powervault is designed to store up to 3kWh of energy in your home. You can increase the capacity to 4kWh using more of our Lead Acid batteries at any point in the future. You can also upgrade to Lithium-ion Phosphate battery technology and store up to 6kWh of energy in your home at any point in the future.

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Powervault

Lead Acid 4.0kWh

This is our most popular Lead Acid product, which is designed to store up to 4kWh of energy in your home. You can upgrade to Lithium-ion Phosphate battery technology and store up to 6kWh of energy in your home at any point in the future.

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