Brands · Energy
Who actually makes the kit, and what to know.
- Octopus Energy
Energy supplier, installer and own-brand unit (Cosy) wrapped into one. Fixed-price surveys, one warranty, integrated tariff; at the cost of installer choice.
- REC
Norwegian-headquartered manufacturer whose Alpha Pure range is the panel UK installers reach for when the roof is part of the architecture. Strong measured performance, a clean all-black aesthetic, and a long performance warranty.
- Longi
The largest solar manufacturer in the world by volume. The Hi-MO range is the panel most British solar installers quote first. The efficiency-to-price ratio is hard to argue with and the supply chain is reassuringly boring.
- JA Solar
High-volume Chinese panel manufacturer with a strong UK distributor network and a sensible price-to-spec story. The DeepBlue range is the panel installers quietly recommend when budget is the deciding factor.
- SunPower (Maxeon)
American-headquartered, Singapore-manufactured Maxeon cells; the most efficient mainstream domestic solar panel on the UK market and the longest performance warranty in the segment. The right answer when roof area is the limiting factor rather than budget.
- Tesla
Tesla's Powerwall remains the home battery most UK homeowners ask for by name. The Powerwall 3 integrates a hybrid inverter, simplifies the install for new solar pairings, and the app is still the best in the segment.
- GivEnergy
British battery manufacturer with the deepest UK installer network in the segment. The All-In-One combines battery, inverter and controls into one floor-standing cabinet that simplifies plant rooms and survives real garage conditions.
- Sonnen
German battery manufacturer whose Eco range is built around LFP chemistry and an unusually long warranty. The unit you choose when the install is part of a considered architectural plant room and longevity matters more than headline price.
- Fox ESS
Chinese inverter and battery manufacturer with a sensibly-priced stackable battery range and a UK distributor network that is now competitive on response times. The unit installers reach for when the brief is reliable storage without the badge premium.