UK Solar & Battery News: 5 Stories — 5 Aug 2026

Five stories from TopGreenDeals-listed companies this week: a Nottinghamshire workshop chasing near self-sufficiency with solar and a large battery bank, two Kent home projects that push storage hard (including a three-phase upgrade), a County Durham commercial rooftop install with bird protection baked in, and a retrofit programme that moved seventy rural homes from EPC E to C.

Spectrum Energy Systems cuts a Nottinghamshire workshop’s bills by 86%

Spectrum Energy Systems has published a commercial case study for Keyte Smith, a workshop in Kirkby-in-Ashfield, Nottinghamshire. The brief was self-sufficiency rather than a modest bill trim: annual electricity spend was around £4,000 and still rising.

The installed system is a 24 kW solar array — 48 all-black 500 W panels — with two Solis 10 kW hybrid inverters and two 32 kWh Fogstar batteries (64 kWh total). Spectrum says the roof layout had to work around multiple skylight rows, and that the full install (panels, inverters, and battery bank) was completed in four days while the workshop kept operating.

Three months after commissioning, Spectrum reports the site is on course for an 86% reduction in electricity bills, about 23,000 kWh of annual generation, roughly £3,400 a year in savings against the previous bill level, a 4–5 year payback, and around 9 tonnes of CO₂ avoided annually. Weekend generation is stored for later use when the workshop is closed. Those figures are the installer’s project results and projections, not a third-party audit.

For other small manufacturers, the useful design point is storage sized for real operating hours: large daytime arrays still waste value without enough battery to cover mornings, evenings, and shutdown days. Our solar panels for UK homes guide and home battery storage guide cover how that trade-off scales from workshops to houses.

Read Spectrum Energy Systems’ Keyte Smith case study

Sunbright Energy fits 11.16 kW flat-roof solar and 41.9 kWh storage in Sevenoaks

Sunbright Energy has completed a high-consumption home system in Sevenoaks, Kent, on a flat roof. The array is 24 × Aiko Neostar 2S 465 W all-black panels (11.16 kW) on a Fox ESS KH 10 kW single-phase hybrid inverter, with nine Fox ESS EQ4800 modules for about 41.9 kWh of storage.

The household uses around 16,800 kWh a year. Sunbright’s model expects about 10,467 kWh of annual solar generation and an annual CO₂ reduction of roughly 2,155 kg. Before the install, the modelled electricity bill was about £5,292 a year; after solar, storage, and a move to a suitable variable tariff, the projected bill is about £2,017 — an estimated first-year saving of £3,275, with Smart Export Guarantee payments potentially bringing the effective cost nearer £1,837. Sunbright states these are projections, not guarantees.

The flat-roof design point matters for homeowners who assume only pitched roofs work: orientation, row spacing, wind loading, and drainage still need proper engineering, but the plane can allow a larger, better-aimed array than a constrained pitch. Large storage here is not only surplus-solar banking; it is also a tariff-management tool for a high-load home.

Read Sunbright Energy’s Sevenoaks project page

Sunbright upgrades a West Malling home to 69.12 kWh three-phase storage

The same installer also published a storage-only upgrade in West Malling, Kent (ME19). The home already had a single-phase Fox ESS Mira high-voltage battery. After the property moved to a three-phase supply, Sunbright removed the old battery and installed a Fox ESS H3 Pro 20 kW three-phase hybrid inverter with six Fox ESS EP12 batteries — 69.12 kWh total.

The house needed more than a bolt-on battery: after the supply upgrade, Sunbright rebuilt the system around a much larger three-phase bank. The point is cheap overnight charging and daytime use — useful when loads grow with an EV, heat pump, or extension.

Solar and storage are not one-and-done. When the supply type or household loads change, a clean redesign can beat forcing the old kit to stretch. Our Tesla Powerwall 3 comparison and home battery storage guide are useful starting points when a system needs to grow.

Read Sunbright Energy’s West Malling upgrade page

Tomlinson Longstaff commissions commercial solar in Bishop Auckland

Tomlinson Longstaff, a County Durham electrical contractor, has completed a commercial rooftop system for Stuart Hall and Co. Chartered Accountants in Bishop Auckland.

The design uses 32 × AIKO 460 W panels on Renusol mounting, each with a SolarEdge S440 optimiser, plus a SolarEdge SE 10000H Home Wave inverter, a SolarEdge Modbus meter, and DC surge protection on the three roof strings. Bird-protection mesh was fitted around the perimeter to keep nesting birds from damaging panels and cabling. Mark Wilson Roofing supported the panel installation in poor weather; Tomlinson Longstaff says the system was finished on time.

It’s a clean commercial install with the practical extras many roofs leave until later: optimisers on every panel, surge protection, and bird mesh from day one.

Read Tomlinson Longstaff’s Bishop Auckland case study

YES Energy Solutions wins five July awards for retrofit and support work

YES Energy Solutions had a strong July across regional energy-efficiency awards. The useful part is the delivery behind the trophies.

Headline results the company attributes to its programmes:

• Large Scale Project of the Year (Yorkshire & Humberside) for a North Yorkshire home-upgrade programme with North Yorkshire Council and Align Property Partners: 70 rural homes, 187 energy-efficiency measures over 18 months, about £1.7 million of government funding, every home improved from EPC E to C, and around 180 tonnes of CO₂ saved a year. Measures included insulation, ventilation, heating, windows, and solar where appropriate.
• Council or Local Authority Body of the Year (Yorkshire & Humberside) for Calderdale Council, which YES nominated: 59 households improved in the past year, more than £1.4 million invested, plus a £250,000 crisis fund, delivered with YES and the West Yorkshire Combined Authority.
• Vulnerable Customer Support Organisation of the Year (Yorkshire & Humberside) for YES’s advice team.
• Further East Midlands recognition: a Derby project win, highly commended for Nottingham Warm Homes Local Grant, and a commended team award.

The rural programme is the one worth remembering: older homes actually moved from EPC E to C through insulation, heating upgrades, windows and solar — funded work delivered with the council, not just another awards roundup.

Read YES Energy Solutions’ July awards post

Selected from companies listed on TopGreenDeals. Stories are checked against primary sources before publication.