Commercial battery storage in Surrey

Behind-the-meter commercial battery storage and business backup power for Surrey businesses, including Guildford, Woking, Redhill.

Commercial battery storage in Surrey is priced by UK Power Networks’ South Eastern schedule rather than a national rate: the red, amber and green bands on a half-hourly bill, and the capacity charge per kVA, decide whether a battery pays on a Guildford trading estate, a Redhill warehouse or a Woking office. Surrey has no county grant for a business battery; what it has is good solar yield, a clear planning route for roof solar and a rates exception for renewable storage.

Six facts a Surrey business should have first

1. Network operator. Surrey sits in the South Eastern licence area run by UK Power Networks, one of the 14 distribution areas listed in our guide to finding your network operator. UK Power Networks publishes its own bands and rates; take the current figures from your DUoS statement and enter them in the peak shaving calculator under “another area”.
2. Solar yield. PVGIS models 1,027 kWh per kWp a year for Guildford and 1,030 for Woking at the optimal 39-degree tilt, and 934 and 932 kWh per kWp on a 10-degree south-facing roof: long-term averages for the towns, not guarantees for one roof, and among the better yields in England.
3. Planning. Roof solar on a non-domestic building in England is permitted development under Part 14 Class J of the General Permitted Development Order (0.2 m protrusion, 1 m above a flat roof, 1 m from the edge, listed buildings excluded). No Part 14 class covers battery equipment, so an outdoor cabinet or container is a question for the district or borough planning authority, and much of Surrey is green belt or within the Surrey Hills National Landscape, where the authority will look harder at siting.
4. Business rates. In England, plant used for generation or storage of power from renewable sources is excepted from the rateable value for days before 1 April 2035 (SI 2022/405). A battery charged from on-site solar is the clear case; a grid-charged peak-shaving battery is a valuation question.
5. Funding. Surrey County Council’s business grant page lists its Rural England Prosperity Fund 2023 to 2025 as closed and its business decarbonisation course, assessment and loan as closed on 31 March 2025; no open business energy or solar grant is listed. The council’s own target is net zero for its operations by 2030 and for the county by 2050. No UK-wide capital grant funds a business battery either; the Industrial Energy Transformation Fund has closed. Plan on tax relief, finance or your own funds; our funding page keeps each scheme’s status.
6. Connection. Above 16 A per phase the battery needs a G99 application to UK Power Networks before connection; in England and Wales a transmission impact assessment is only triggered above 5 MW. The G99 page explains the route.

Where Surrey’s business load sits

Surrey’s commercial demand is spread along the M25, M3 and A3 rather than concentrated in one industrial quarter. Slyfield in Guildford, Holmethorpe in Redhill, the Farnham Trading Estate and Woking Business Park carry the county’s trade, engineering, distribution and light-manufacturing load; the office parks around Leatherhead, Weybridge and Epsom carry predictable daytime profiles with roof area to match. The common thread is a weekday afternoon peak and, on older connections, an agreed import capacity that stops a site adding chargers or plant.

What a battery does on a Surrey site

A behind-the-meter battery charges when units are cheap, discharges through the red band and holds the site’s draw under its agreed capacity, which is how a constrained site adds load without a reinforcement. Where the roof carries solar, the battery turns midday export into evening self-consumption; the Smart Export Guarantee applies across Great Britain for what is still exported, at supplier-set rates this site does not quote. Grid-flexibility income is site-specific and never guaranteed. Our peak-shaving guide sets out the bands; the saving comes from twelve months of your own half hourly data.

What it costs and saves in Surrey

What a battery costs does not depend on the county: the sourced UK bands and a calculator are on our page on the commercial battery storage UK cost. A battery is plant and machinery: the Annual Investment Allowance covers the first £1m a year and, above that, a company claims the 50% first-year allowance on special-rate spend, which is how this site treats a battery, as our tax guide explains. Commercial storage is standard-rated at 20% VAT, recoverable by a VAT-registered business.

Towns this guidance covers

Business sites across Surrey: Guildford, Woking, Redhill and Reigate, Leatherhead, Camberley, Epsom, Farnham, Dorking, Staines, Weybridge and the GU, KT, RH and CR postcode districts that fall inside the county. Sites inside the M25 on the London network are covered by our London page.

Surrey battery storage FAQs

Is there a Surrey grant for a business battery? No. The county council lists its business decarbonisation loan and the Rural England Prosperity Fund as closed and shows no open business energy grant; no UK-wide capital grant covers a battery either.

Who is the network operator for Surrey? UK Power Networks, in its South Eastern licence area. The distributor ID on your MPAN confirms it.

Does a battery need planning permission in Surrey? Roof solar on a non-domestic building is usually permitted development under Part 14 Class J. There is no equivalent class for battery equipment, so ask the district or borough planning authority before placing an outdoor battery, especially in the green belt or the Surrey Hills.

Can a Surrey business get the figures for its own site? Send your details and we reply by email with what the published figures say; if storage does not look worth pursuing, we say so.

Sources

• Surrey County Council, carbon-free Surrey: net zero as an authority by 2030 and as a county by 2050; page reviewed 1 October 2026, read 2026-11-10.
• Surrey County Council, business grant programmes: Rural England Prosperity Fund closed; decarbonisation course, assessment and loan closed 31 March 2025; page reviewed 23 September 2026, read 2026-11-10.
• Energy Networks Association, energy networks explained: the distribution licence areas and their operators.
• PVGIS 5.3 (SARAH3), photovoltaic geographical information system: modelled yield for a 1 kWp south-facing array, read 2026-11-10.
• GPDO 2015, Schedule 2 Part 14 Class J, legislation.gov.uk: solar on non-domestic buildings in England; no class covers battery equipment. Read 2026-11-10.
• The Valuation for Rating (Plant and Machinery) (England) (Amendment) Regulations 2022, SI 2022/405: renewables generation and storage plant excepted from the valuation for days before 1 April 2035. Read 2026-11-10.
• GOV.UK, Industrial Energy Transformation Fund: closed, no successor (estate facts rules, 31 Oct 2026).
• NESO, streamlining connection projects under 5MW: the England and Wales transmission impact assessment threshold.
• Ofgem, Smart Export Guarantee: Great Britain only.