Our exclusive discount on smart battery storage

Our Tech Team are on hand to talk through technical details and answer your questions. You can request a call back from them by filling in this short form. 

Although there's no closing date for this offer, we can remove it at any time. 

Powervault 3 expert installers will do all the work. A standard installation usually takes a few hours. If you have specific needs then our experts will discuss these with you and if there are any additional works required they will confirm the cost ahead of final payment.

The Powervault 3 can be installed in most internal locations, such as garage, utility room, basement or under the stairs. It's not suitable for external locations and we don't recommend installation in loft spaces. Powervault 3 will be floor mounted and fixed to the wall for stability. Your Powervault 3 will need to be connected to the internet at all times. See the installation guide for more details.

If you currently export excess solar generation you will be able to store this for use later when the sun is not shining. This in turn will reduce the amount of energy you draw from the grid and, therefore, reduce your electricity bill. If you have Economy7 tariff, you can charge up your Powervault 3 on cheap overnight rate electricity and use it during the higher rate hours. How much you save on your energy bill will depend on your individual solar PV system and energy usage pattern.

You may notice the battery charging when the sun isn’t shining or discharging when your house is not consuming a lot of electricity. 

Our price includes a standard installation of your Powervault 3 battery. This means no extra work is needed - this could be running extra connections, drilling, etc. Our standard installation requirements are detailed below. 

Our price includes all of the following:

• 4kWh or 8kWh battery - as chosen by you
• Remote survey using information and pictures of the site you send us
• Full installation and commissioning, including registration on the Powervault 3 customer portal
• Testing and confirming Powervault 3 is operating in line with its technical specifications
• Demonstration of your battery and customer portal.

Installation is available in mainland UK and Isle of Wight. We currently don't install in Scottish Highlands and Islands, Northern Ireland, Channel Island, Isle of Man or Isles of Scilly. 

You can view full standard installation details here. 

Here are the Powervault 3 location requirements: 

• Need to be indoors: utility room, hallway, garage, or basement. We don't recommend installation in the loft or high humidity spaces.
• Floor/wall must withstand the weight of Powervault 3.
• Easily accessible and should not involve any clearing, tidying or work that involves the unreasonable preparation of the location for installation. Check the dimensions of the Powervault 3 to ensure it will fit in your desired location and permit air flow to/from the chassis. Nothing should cover or seal the air grilles.
• Must be within a wiring distance of 10 metres from the fuse box and the incoming electricity meter.
• Must permit a simple wire route from Powervault 3 to the fuse box. It shouldn't require drilling through walls or routing through more than one room
• The location must have an accessible internet supply, which Powervault 3 can connect to via Ethernet, Powerline or Wi-Fi.

If extra work is required, you’ll be quoted for these ahead of your final payment.

If you have a query about these standard installation requirements or are unsure about the suitability of your home, please leave your details on the call back form and we will be in touch to discuss your specific requirements.

Included within the standard installation package is a remote, off-site survey using information and images you email us. If, for whatever reason, we can't establish the extent of the works required to install the Powervault 3 system, we may need to send an installer to do a survey in person. There’s a one-off charge of £150 (inc. VAT) for this service.

No. You continue to receive your feed-in tariff payments in full.

The 4.1kWh battery is: H90cm x W98cm x D25cm.

And the 8.2kWh battery is: H120cm x W98cm x D: 25cm.

No. The Powervault 3 can be installed in different configurations either replacing your old inverter now, or leaving the new one ready for when your old one fails. Switching to the new inverter later will involve a small amount of work from a qualified electrician (and associated cost), but save you the cost of the new inverter later. Our Tech Team will talk you through the options.

You need to talk to your energy supplier as there are regulations about switching to E7 meters. Even if you are not on E7, you should still be able to make substantial savings by storing your solar generation for storage later in the day.

Having a smart meter doesn’t have any impact on the installation of the battery itself. OFGEM have also confirmed that customers with solar PV + battery + smart meter would receive deemed export feed-in-tariff payments. They are in the process of updating their published guidance on this matter. Talk to your feed-in-tariff provider if you have more questions about this matter.