Fox ESS Battery & Inverters

Fox ESS is the workhorse brand behind two of our most popular installs, and it's the one we reach for when a family wants proper solar and storage without stretching the budget. The range is modular by design: H1 and K Series hybrid inverters, the EVO AIO all-in-one unit that packs inverter and battery into a single wall-mounted box, and the ECS modular battery that lets you stack capacity to match your roof and your bills. That flexibility is the whole point — you buy the size you need now, and add to it later rather than replacing the lot. As an MCS-certified installer covering Hampshire, the Isle of Wight, Dorset, West and East Sussex and Surrey, we design, fit and register every Fox ESS system ourselves, and it comes with bird protection mesh as standard.

In plain terms, Fox ESS is the sensible-money choice. Our Basic solar-only package is built around the battery-ready Fox 3600 inverter, so you can go solar today and add storage down the line without swapping the inverter out — that's the modular thinking working in your favour. Step up to our Budget package and you get a Fox ESS hybrid inverter paired with a Fox EP6 (5.76kWh) or, for bigger households, a Fox EP12 (11.52kWh) battery. It's the same reliable smart-management and app control you'd expect from the pricier brands, at a price that makes solar-and-battery genuinely affordable for most homes on the South Coast.

We're honest about where Fox ESS sits. It isn't the sleekest badge on the market — a Tesla Powerwall wins on brand cachet and integrated design, and premium panels like Aiko will edge it on outright output. What Fox ESS gives you instead is dependable performance, real modular scalability and warranties that stack up, all for meaningfully less money. For a family that wants the biggest bill reduction per pound spent, that trade is usually the right one, and it's why Fox ESS anchors the packages we quote most often.

Every Fox ESS install we do is a G99 job because it involves battery storage and export — that means we submit the DNO application (to SSEN across Hampshire, the Isle of Wight, Dorset and west Surrey, or UK Power Networks across Sussex and most of Surrey) and get it approved before we install, not after. We also register the system for the Smart Export Guarantee so you're paid for the energy you send back to the grid. No pushy sales, no single made-up savings figure — just a proper survey, a fair 'from' price and a system sized for your actual roof.