Pricing · Free screening or full dossier
Start free. Buy the dossier when the roof is worth it.
The free screening tells you whether to pursue. The full assessment is the board-ready 29-page dossier — financials, engineering flags, and fully sourced workings — for a fixed fee per site, from £1,250. Read our feasibility guide, about Stage1Energy, or cost breakdown.
3 working days · No card needed · Full dossier from £1,250 per site when you are ready
Start here
Free
One building · 3 working days
A plain pursue-or-park verdict, panel placement, and monthly generation. No card needed.
No card needed
Recommended
£1,250
Per site · 5 working days
The board-ready 29-page dossier: 25-year cashflow, four engineering flags, and sourced workings — reviewed before release.
80+ roofs
£250k+
No ceiling — priced to the size of your estate
From £1,250 per site · priced per programme by enquiry
Same dossier for every building, plus a cross-portfolio ranking that shows which roofs to pursue first. Programmes from a handful of sites to 80+ — no hard ceiling on portfolio size.
Or screen one building free first
A structural survey on a roof that was never viable costs £2,000–£5,000. The remote, evidence-based feasibility assessment that tells you whether the survey is worth commissioning is £1,250.
Clear go or no-go with the evidence to defend it — or we rework the dossier at no extra cost. Written into the terms of engagement.
Need it faster? Priority delivery in 2 working days is £1,750. Same document, either way.
One site or a portfolio — the same standard at any scale. Large programmes (including 80+) are sequenced and priced by enquiry.
Portfolio programme
Tell us roughly how many roofs you are weighing — a handful, dozens, or 80+. There is no hard ceiling on portfolio size. We will come back with programme scope, sequencing, and pricing — agreed in writing before any work starts.
Free screening vs full assessment
Both run on your roof. Free answers “is this worth a closer look?” The full assessment answers “can I put this in front of the board?”
Full assessment
Screen my building FreeReady for the board pack? The full assessment is from £1,250 — enquire · Explore the worked example
Free is the on-ramp. The full assessment is the document that closes the case.
Why the full assessment
Most early feasibility is either a slow consultancy pack with opaque workings, or a sales quote written to sell. Stage1Energy is a fixed-fee, board-ready dossier — every material figure with its formula and source, reviewed before release, delivered in five working days. One roof or a portfolio of 80+: the same standard, sequenced and priced by programme at scale. £1,250 per site is the cost of knowing before survey spend.
The board needs numbers, not a hunch
25-year discounted cashflow with NPV, IRR, and payback — modelled on your roof.
Engineering unknowns kill momentum
Four screening flags — wind, structure, grid, planning — each with clear next steps.
“Can we trust these figures?”
Sourced calculation workings: formula, result, and source for every material number — reviewed before release.
Wrong roof = wasted survey spend
A documented pursue-or-park verdict before you commission surveys or installer quotes.
Slow or opaque early work
Fixed fee, five working days, same care at one site or many — not an open-ended consultancy clock.
See the depth for yourself — explore the worked example.
£1,250 per site · 5 working days · Fixed fee
What the fee unlocks
One fee. The complete financial case, every flag, and fully sourced workings — reviewed before release. Priority delivery is the same document, faster. £1,250 per site.
Questions
The full feasibility dossier is £1,250 per site for standard delivery in five working days. Priority delivery in two working days is £1,750. Free screening on one building is £0. All fees are fixed with written terms before work starts.
Free screening delivers a written verdict, panel placement, and monthly generation profile within three working days. The full dossier adds 25-year financials, four engineering flags, sourced calculation workings, and a human-reviewed pursue-or-park verdict.
Yes. Stage1Energy does not install, procure, or design systems. The only product is an independent feasibility assessment with sourced figures — not a sales quote tied to winning an installation contract.
Free screening is delivered within three working days. The full dossier is five working days per site at standard delivery, or two working days with priority delivery at £1,750 per site.
No site visit is required to start. Send the site address and any consumption data you have. The assessment is remote and evidence-based — satellite imagery and published engineering methods. A physical survey is downstream: feasibility decides whether that survey is worth commissioning.
It is not a survey, a structural sign-off, a design pack, or an installer quote. It is remote, evidence-based feasibility — the earlier stage that decides whether survey and design spend is justified. Built from satellite and metered data, validated against twelve months of metered output from an operating commercial installation. Stage1Energy is a feasibility screening, not a precision measurement. We aim for an answer accurate enough to make a confident pursue-or-park decision — typically within ±15% — with every material figure validated against real data (our benchmark case sat within ±10% of twelve months of metered output). Exact yield and returns are confirmed at survey and design stage.
Organisations that buy on purchase order start with free screening, then confirm scope in writing before we invoice — 50% before work starts, balance on delivery.
You still get the full dossier. A documented no-go on one roof is often what justifies the budget to look at the next one.
The free screening is a safe on-ramp — a verdict on one building within 3 working days, no card needed. Ready for the board pack? The full assessment is from £1,250 — enquire.