Solar & Powerwall – Street

Solar & Powerwall Installation in Somerset: Smart Energy for a New Home

We recently completed a solar & Powerwall installation in Somerset for a returning customer. After purchasing a new home, they chose to work with us again—thanks to our previous successful project and trusted relationship.

The property provided ideal conditions for a solar setup. It featured a large roof with dual aspects, offering ample space for a substantial solar array. Additionally, an external alley beside the house allowed for easy placement of the inverter, Tesla Powerwall, and Tesla Gateway near the incoming electrical supply.

The Solar PV & Battery Solution

We designed an 8.4kW solar array, split between south-west and north-east roof orientations. This design helped maximise solar production throughout the day. The panels connected to a string inverter, while the Tesla Powerwall 2and Tesla Gateway provided full-home backup during power cuts.

The Installation Process

We completed the full installation over four days. First, we fitted the inverter, Powerwall, and Gateway in the side alley. We then connected the system to the main electrical supply and installed a new earth rod for safety compliance.

Next, we mounted the solar panels using a Schletter on-roof system, tested to MCS standards. Afterward, we conducted production and earth leakage tests to ensure system performance and safety.

The Results & Savings

This solar & Powerwall installation in Somerset cost around £14,000. It’s expected to generate 6,734kWh per year, helping the homeowner save approximately £1,500 annually. The Tesla Powerwall stores excess energy, reducing reliance on the grid and increasing self-sufficiency.

Moreover, any surplus energy—once the Powerwall is full—can be exported. With fixed export tariffs offering up to 15p per kWh, the system offers a payback period of just 6 to 7 years.

This project highlights how solar and battery storage can work together to lower energy costs and future-proof a modern home.