4.92 / 5 from 48 verified reviews

Phenomenal install. Scaffolding up by 7am and the Powerwall commissioned by 4pm. App was set up before they left. Bills already down 60% in the first month.

Three other quotes, and SMS were the only ones who actually surveyed the roof properly and explained why I needed string optimisers. Ten months in, performance exactly as the simulation predicted.

They service the system the previous installer fitted — and found three optimisers offline that had been knocking 18% off generation for two years. Fixed in a single visit.

I knew nothing about solar before this. The engineer explained everything in plain English, gave me the pros and cons of three battery options, and didn't pressure me. Quote was the lowest of three I got.

Whole-property setup — solar, battery, EV charger, all from one team. Took two days. Worth every penny. The Octopus Intelligent integration with the Zappi means my car charges from solar surplus automatically.

My existing solar installer went bust and I needed someone to take over the maintenance. SMS picked up the contract, did a thorough audit, and replaced the failing inverter under warranty (which I didn't know I still had).

Did a 32 kW system on our barns. Engineering team handled the DNO G99 paperwork and substation upgrade brilliantly. The system pays for itself in 7 years on current SEG rates.

Storm Watch saved us during the November storms — the battery topped up automatically and we kept the fridge and broadband running through a 4-hour outage.

Good install, professional team. Slight delay on the survey-to-install timeline (4 weeks instead of 3), but it was Christmas period. Quality of work top notch.

Edinburgh planning is notoriously difficult for solar in conservation areas. SMS handled the planning consultation, used in-roof panels for low visual impact, and got it through first time.

Wanted to add a battery to our existing 4 kW solar (installed 2018). SMS specced the right hybrid inverter swap, kept our FiT contract intact, and added a 13.5 kWh PowerOcean. Brilliant outcome.

Did the BUS heat pump grant paperwork and the solar install at the same time. Total project (after grant) under £18k. Heating bill in the first month: £12. Used to be £180.