Nissan has partnered with Eaton, a US corporation, to bring residential storage battery systems to customers in the UK. We’ve reported on this partnership a few times over the years, but the product — xStorage — is now close to hitting homes. There’s also a business-scale product available.
There are already 850,000 rooftop solar systems in the UK. Experts expect energy storage will become extremely popular with people who have existing solar installations as government support for solar energy wanes. Also, time-of-day pricing is expected to become more common as all homes in the UK are fitted with so-called smart meters by 2020.
Like the Tesla Powerwall, the Nissan system is attractively styled so that it is visually appealing. In theory, it 
could be mounted on a living room wall and become a topic of conversation like a piece of art from Chagall or Van Gogh. The cells for the residential battery will be manufactured in the UK by Nissan at its manufacturing facility in Sunderland.
The system is priced at £4,200–4,700 (€5,000–5,580), or as low as £3,000 (€3,500) for systems that use used batteries. The base product is a 4.2 kWh system with a 3 kW inverter. The Tesla Powerwall 2 has a capacity of 14 kWh for a price of £5,900. But there are other factors to consider when comparing a Powerwall, xStorage, or some other energy storage product.
You can pre-order an xStorage unit for just £50. Nissan hopes the fact that its battery cells are produced in the UK will be an incentive for some customers.