Commercial Solar Installers in Basingstoke

Commercial solar pricing is quoted per kWp (kilowatt-peak) installed, and the rate falls as systems get bigger. These are realistic 2026 UK installed-price bands for straightforward roof-mounted systems — scaffolding-heavy roofs, fragile coverings or switchgear upgrades push costs toward the top of each band:

Generation figures assume roughly 950 kWh per kWp per year — a fair planning number for well-oriented commercial roofs in north Hampshire, which sits in the sunnier southern half of the UK. The economics are driven by self-consumption: every kWh you use on site displaces grid electricity at commercial rates (typically 25p+/kWh in 2026), while exported surplus earns far less. That's why we size systems against your half-hourly consumption data, not the maximum the roof could hold.

Commercial solar PV is classed as special-rate plant and machinery for capital allowances. That gives you two accurate routes to year-one tax relief:

• Annual Investment Allowance (AIA) — write off 100% of the system cost against taxable profits in year one, within the £1 million annual AIA limit. This is the route most Basingstoke SMEs use.
• 50% First-Year Allowance — if your AIA is already committed to other assets, claim 50% in year one with the balance written down at 6% per year in the special-rate pool.

Two things to get right: solar is special-rate, so it does not qualify for full expensing (that applies to main-rate assets only), and the 130% super-deduction ended in 2023 — any installer still quoting it is out of date.

The example assumes the 25% main rate of corporation tax — companies on the 19% small profits rate save proportionately less. On VAT: the 0% VAT rate you may have read about applies to domestic installations only. Commercial installs are standard-rated at 20% — but if your business is VAT-registered, you reclaim it as input VAT in the normal way, so it's cash-flow, not cost. We'd always say: confirm the allowances treatment with your accountant before you commit; we'll supply the itemised breakdown they need.

Basingstoke sits in the Southern licence area of SSEN (Scottish and Southern Electricity Networks), so every grid application for a commercial system here goes to SSEN — and getting it in early is the single biggest thing that keeps a commercial project on schedule.

• G98 covers small systems up to 16 amps per phase (roughly 3.68 kW single-phase). Almost no commercial system fits under this.
• G99 applies to everything larger — and crucially, SSEN must approve a G99 application before installation, not after. For a standard application, the DNO has 65 working days to issue a connection offer.

For most roof-mounted commercial systems in Basingstoke, the offer arrives within that statutory window. But southern England's network is busy: larger exports on constrained feeders can trigger reinforcement works or an export limit, which adds time and sometimes cost. That's why we submit the G99 application at design stage, not after you've signed — and where SSEN caps your export, we'll model whether an export limitation scheme or commercial battery storage (we specify SigEnergy, Fox ESS and GoodWe systems) recovers the value instead.

One dated note on hardware: following GivEnergy Ltd entering administration in April 2026, we no longer specify GivEnergy equipment on new installations. Commercial storage is quoted on SigEnergy, Fox ESS or GoodWe with manufacturer-backed warranties.

Basingstoke has one of the strongest commercial property footprints in Hampshire, and the roof stock is genuinely good for solar:

• Chineham Business Park & Hampshire International Business Park — five minutes from the M3, a mix of large-floorplate offices and technical buildings. Flat and low-pitch roofs here typically take ballasted, non-penetrative mounting systems.
• Basing View — the 65-acre business district by the railway station, home to around 180 businesses including names like Network Rail, The AA and Sun Life of Canada. Multi-let offices here usually need landlord consent and a roof-lease conversation early — we've built that into our survey process.
• Houndmills — Basingstoke's classic industrial and warehouse quarter, including major distribution occupiers. Steel portal-frame warehouse roofs are the best solar real estate in the town: big, unshaded, and sitting above heavy daytime electrical loads.
• Viables Business Park — the 90-acre park south-west of the town centre within easy reach of M3 junctions 6 and 7, home to major occupiers including Sony, De La Rue and Fujitsu alongside owner-occupied units where the business keeps the full benefit of on-site generation.
• Daneshill and Kingsland — mixed office and light-industrial estates where 20–50 kWp systems typically match consumption well.

The consumption profile matters as much as the roof. Distribution and manufacturing units with refrigeration, compressors or machinery running through the day often self-consume 70% or more of generation. Offices with a weekday 8am–6pm load curve are a near-perfect match for solar output. Both make the payback maths work without relying on export income.

Solar isn't a fringe choice in this borough — it's policy. Basingstoke and Deane Borough Council declared a climate emergency in 2019, setting targets for the council's own operations to be carbon neutral by the end of 2025 and for the whole borough to reach net zero by December 2030. The council has backed that with action, installing over 400 solar panels across its community buildings and joining Hampshire County Council's Solar Together group-buying scheme for residents.

For a Basingstoke business, that context matters in three practical ways:

• Planning is generally straightforward — roof-mounted commercial solar is usually permitted development, and the local authority is publicly supportive. Listed buildings and conservation-area frontages are the exceptions worth checking first; we handle that check as part of the survey.
• Tenders and supply chains increasingly ask for it — on-site generation is one of the most defensible lines in a carbon-reduction plan, and a metered kWh figure beats an offset claim.
• Your staff can join in — Solar Together Hampshire runs periodic group-buying rounds for households across the county. It's domestic-only, but we've written a plain-English guide to how the scheme works if your team asks.

Most commercial solar quotes in Hampshire come from a salesperson, get designed by someone in an office, and get installed by subcontract crews the company found that month. Solent Solar works differently: Tom — the owner — and his small team do the site survey, the system design, the G99 paperwork and the installation. The team who stood on your roof and looked at your distribution board is the team who commissions the system. Nothing is lost in handover, because there is no handover.

• MCS-certified installation — required for Smart Export Guarantee registration on systems up to 50 kWp, and the standard insurers and landlords expect.
• HIES member — independent consumer protection and deposit safeguards.
• OZEV-approved — workplace EV charging can be designed into the same project, sharing the groundwork and supply upgrades.

We're based in Whiteley, near Fareham — about 30 miles from Basingstoke via the M3 — and the town sits comfortably inside our installation area. The next step is a free, no-obligation commercial site survey: Tom will assess the roof structure and orientation, review 12 months of half-hourly consumption data if you have it, check the SSEN connection position, and give you a fixed written quote with realistic payback figures — not best-case ones. Call 07833 448687 or use the quote form to book.

How much does commercial solar cost in Basingstoke?

Do we need planning permission for solar panels on a commercial building in Basingstoke?

How long does an SSEN G99 grid application take?

Can our business claim tax relief on solar panels?

You're based near Fareham — do you actually cover Basingstoke?