The current price for a fully installed Tesla Powerwall 2 system will be between £12,970 and £17,760 depending on the complexity of the installation needed, whether you are on single or three phase supply, and the VAT rate you are eligible for. You can contact us for an accurate quote of installation costs for a Tesla Powerwall 2 at your home or business.It is possible to get batteries for less than the Tesla Powerwall costs, but they will store less electricity, and be able to supply less instantaneous power. Have a look at our range of batteries to make the comparison.