How much does renewable energy cost for a business?

There is no single price for renewable energy for a business, because it is not a single product. The cost depends on which measures your site needs and in what order. The honest answer, and the one that saves the most money, is to sequence the work by payback: cut waste first, then generate, then store, then electrify heat and transport. Below is what each measure actually costs a UK business in 2026, and how we fund it. Every figure here is a benchmark; your free assessment replaces these with numbers modelled from your own half-hourly meter data.

Cost by technology, at a glance

• Energy efficiency (audit, voltage optimisation, LED, controls): £2,000 to £100,000, payback 1 to 4 years. The cheapest carbon and kWh you will ever buy, and the reason to start here.
• Commercial solar PV: roughly £600 to £1,300 per kWp. A 50 kW office array is about £45,000 to £60,000; a 250 kW warehouse system £190,000 to £240,000; a 1 MW factory system £600,000 to £750,000. Payback 5 to 8 years, then 15 to 20 years of near-free power. See the commercial solar page.
• Battery storage: £20,000 to £500,000 depending on capacity, payback 5 to 9 years. Best added once solar is generating. See battery storage.
• Commercial heat pumps: £30,000 to £750,000, payback 7 to 12 years, and the only route to remove Scope 1 gas. See heat pumps.
• EV charging: from £3,000 for a couple of workplace posts to £150,000 or more for a rapid hub, payback often 3 to 6 years on fuel and grant savings. See EV charging.

How we fund it

Most of a renewable roadmap does not need capital up front. We model three routes side by side on every proposal. Cash purchase is simplest and cheapest over the life of the asset, and 100% Annual Investment Allowance lets a profitable company deduct the full cost from taxable profit in year one, with VAT reclaimable for VAT-registered businesses. Asset finance spreads the cost over five to seven years and is usually cash-flow positive from month one, because the finance payment is smaller than the bill it replaces. A Power Purchase Agreement needs zero capex: a funder owns the system and you buy the power at a fixed rate below grid. Add the grants and reliefs on the grants and funding page, chiefly the Workplace Charging Scheme for EV and the Smart Export Guarantee for solar export, and the effective net cost of owned kit is well below the headline.

What drives the price up or down

The biggest variables are roof condition (a pre-2000 roof may need an asbestos survey or a re-roof, which the solar business case can often carry), electrical infrastructure and whether a grid connection upgrade is needed, structural loading on larger roofs, and the Distribution Network Operator timescale for a G99 connection. Efficiency measures and self-consumption matter more to the final return than the headline price per kWp: a system sized to your actual consumption, and paired with storage or smart EV charging so you use what you generate, pays back far faster than an oversized array exporting cheap power. That is why we size everything from your meter data rather than your roof area.