Question 1

How much do commercial solar panels cost in Portsmouth?

Accepted Answer

As a 2026 guide, commercial solar in Portsmouth runs about £700–£1,000 per kW installed, so a 50 kW warehouse system is typically £38,000–£50,000 and a 100 kW system £70,000–£95,000. Final cost depends on roof type, access and whether you add battery storage, so Solent Solar prices every job from an on-site survey rather than a calculator.

Question 2

What's the payback on business solar in Portsmouth?

Accepted Answer

Most Portsmouth commercial systems pay back in roughly 5–8 years, and faster once you factor in the Annual Investment Allowance writing the cost off against corporation tax in year one. Payback is quickest for businesses that use most of their generation on site during the day — a warehouse, workshop or office running load while the sun is up.

Question 3

Can my business claim tax relief on solar panels?

Accepted Answer

Yes. Solar PV is a special-rate pool asset, and the Annual Investment Allowance (currently up to £1m/year) lets most businesses deduct 100% of the cost in year one. Any spend above the AIA limit goes into the special-rate pool and is written down at 6% a year. Do not claim full expensing or the 40% first-year allowance — those are main-rate only and exclude solar. Always confirm with your accountant.

Question 4

Do I need permission to connect commercial solar to the grid in Portsmouth?

Accepted Answer

Yes — Portsmouth is in the SSEN Southern licence area, and any system exporting above 16A per phase needs a G99 application to SSEN before connection (smaller ones may use G98). This typically takes around 5–11 weeks. Solent Solar prepares and submits the full G99 pack as part of the install.

Question 5

Do you install EV chargers and battery storage as well as solar?

Accepted Answer

Yes. Solent Solar fits solar, battery storage (SigEnergy, Fox ESS, GoodWe) and EV charging, and is an OZEV-approved installer. From 1 April 2026 the Workplace Charging Scheme rose to £500 per socket (up to 40 sockets, covering up to 75% of cost), so pairing solar with workplace EV charging is especially cost-effective for Portsmouth businesses with staff or fleet parking.

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