No marketing fluff, no greenwash, no installer push. The questions every UK SME asks before signing — answered with current numbers and a buyer's perspective.
Costs and payback8 min read
A line-by-line worked example of commercial battery storage ROI for a UK SME: capex, the three revenue stacks (self-consumption shift, peak shaving, time-of-use arbitrage), cycle-life and degradation, AIA tax treatment, and simple vs discounted payback. Illustrative numbers you can re-run against your own bill.
15 June 2026
Process and pitfalls5 min read
Minimum Energy Efficiency Standards are tightening for commercial property, and solar can help your EPC — but not as much as people assume. Here's how solar affects your rating, what MEES requires now, and where the deadlines really stand.
12 June 2026
System design5 min read
A heat pump turns your heating into an electrical load — and that's exactly the daytime demand that makes solar pay harder. Here's how the two technologies work together for a commercial building, and where the pairing does and doesn't stack up.
12 June 2026
Costs and payback6 min read
The single biggest driver of commercial solar returns isn't how much you generate — it's how much you use on site. Here's how to get your half-hourly data, read it, and use it to model self-consumption honestly.
12 June 2026
Process and pitfalls5 min read
Solar panels last decades, but they're not fit-and-forget. Here's the honest picture of ongoing costs — degradation, inverter replacement, cleaning, monitoring and insurance — so your payback model includes the whole life, not just the install.
12 June 2026
System design6 min read
Installers default to south-facing because it generates the most electricity. But for a commercial buyer, total generation isn't the goal — self-consumed generation is. A worked comparison showing why an east-west split frequently returns more despite generating ~15% less.
2 June 2026 · updated 31 July 2026
Costs and payback4 min read
A Power Purchase Agreement puts solar on your roof with no upfront cost — someone else owns it and sells you the power cheaply. It's genuinely useful in the right case, but you give up the returns that make owning so lucrative. Here's the honest trade-off.
2 June 2026
Process and pitfalls4 min read
Most SMEs lease their premises, and a lease can make or break a solar project. The lease length, the landlord's consent, and who keeps the benefit decide whether it's worth doing — here's what to sort out first.
2 June 2026
Process and pitfalls5 min read
Commercial solar proposals are designed to look attractive. Here are the twelve numbers and clauses to interrogate before you sign — and the ones installers hope you'll skim past.
2 June 2026 · updated 31 July 2026
Process and pitfalls4 min read
Since the 1MW cap was scrapped in late 2023, most commercial rooftop solar is permitted development and needs no planning application. But 'most' isn't 'all' — here's exactly where the line falls, and the other consents people forget.
2 June 2026
Standards and accreditation8 min read
Installers wave both acronyms around as proof of quality. For a business buyer only one matters the way you think, the other protects homeowners rather than your company — and above 50 kW, MCS may not even apply to your system. The real distinction, and what to put in the contract instead.
2 June 2026 · updated 31 July 2026
Standards and accreditation4 min read
The panels are commodities; the installer is what you're really buying. Here's how to vet a commercial solar installer properly — track record, financial stability, contract, and the red flags that should end the conversation.
2 June 2026
System design7 min read
Most businesses default to the roof, usually rightly. But if you have spare land — or an unsuitable roof — ground-mount changes the maths. Land area per kWp, the cost gap, planning timescales, and the point at which building on the ground starts to win.
2 June 2026 · updated 31 July 2026
System design8 min read
If you're electrifying a fleet or offering staff charging, pairing it with solar is a natural fit — daytime sun for daytime charging. The cost per mile, how much array each vehicle needs, why slower chargers beat faster ones, and the grant worth claiming.
2 June 2026 · updated 31 July 2026
Solar basics6 min read
The most common objection to commercial solar is 'does it even work in Britain?' The short answer is yes — demonstrably. What the weather really does to output, why heat hurts more than cloud, how the seasons actually split, and the one question worth asking instead.
2 June 2026 · updated 31 July 2026
Solar basics7 min read
Most solar advice online is written for homeowners, and applying it to a business will mislead you. VAT, capital allowances, consumption patterns, consumer protection, grid connection and planning all work differently. The nine differences that change your numbers.
2 June 2026 · updated 31 July 2026
Process and pitfalls4 min read
The site survey is where an indicative quote becomes a real one — or falls apart. Here's what the surveyor checks, what to have ready, and the findings that can change your costs or kill the project.
2 June 2026
Costs and payback5 min read
An honest, jargon-free breakdown of commercial solar payback periods in the UK for 2026 — the inputs that matter, the assumptions installers don't always volunteer, and how to sanity-check any quote you get.
2 June 2026
Costs and payback7 min read
There's no big cash grant for ordinary SME commercial solar in 2026 — the real money is in tax relief and exemptions. Here's exactly what's available, what isn't, and how the financial case actually stacks up.
2 June 2026 · updated 31 July 2026
System design4 min read
A battery is the upsell installers love, but for many SMEs adding solar it doesn't pay for itself. Here are the four cases where commercial storage genuinely earns its keep — and the honest signs you should skip it for now.
2 June 2026