Solar PV Feasibility Study for London Buildings
A solar PV feasibility study answers the only question that matters before anyone spends design money: does solar on this specific London building clear your investment bar? Desk-first, decision-grade, and priced against the roof you actually have.
What the study covers
- Yield. Roof geometry, orientation and shading modelled against local irradiance data — not a national average.
- Consumption match. Your half-hourly data against the generation profile: the self-consumption fraction is the single number that moves payback most.
- Value. Displaced import priced at your actual delivered rate — London mid-band commercial supply averaged 24.14p/kWh including CCL in Q1 2026 — plus export value for the remainder.
- Grid. The G99 position — every commercial array exceeds the 3.68 kW-per-phase G98 threshold — and what UKPN is likely to say about the connection point.
- Consents. The permitted development position: Class J limits, the 56-day prior approval where it applies, conservation-area and listed-building flags for the specific address.
- Structure. A first-pass load view, and whether conventional ballast or a lightweight system is the likely route.
- Money. Capex against current London installed costs, the AIA position (100% year-one relief up to £1m — solar does not qualify for full expensing), the business-rates exclusion to 2035, and an owned-versus-capital-free comparison on the same building.
What it needs from you
Three things start it: the address, twelve months of half-hourly data (your supplier or broker exports it on request), and any roof or structural documentation you hold. Retail units, offices, hotels, industrial — the method is the same; the profile does the work. If the answer is that solar does not clear your bar, the study says so in plain terms, with the numbers that would have to change for it to clear. That is the point of doing it before design money is spent.
Feasibility study questions
What does a solar feasibility study cost?
The desk study is part of our standard proposal process — priced at nil for buildings we could plausibly serve. It becomes a paid piece of work only where you need an independent, decision-grade document for a board, lender or landlord.
How long does it take?
Days, not weeks, once the half-hourly data arrives — the long items on a London programme are the UKPN application and prior approval, which is why the study flags both up front.
Do you cover retail units?
Yes — retail feasibility hinges on daytime refrigeration and lighting load, which the half-hourly data settles immediately.
Get a fixed-price proposal for your building
Tell us where the building is and what it does. You get a priced, planning-checked proposal — no site visit needed to start, no obligation.