Stage1Energy
Board-ready outputs across every roof.
Portfolio assessments that rank sites, write a pursue / conditional / park verdict on each, and show the LiDAR geometry and shading behind the numbers.
Assessments open by waiting list. Register interest for one roof or a portfolio.
Free Full Assessment free on first building. Join the waiting list to register interest for assessments. Four-Site Pack £4,950.
What you get
The same report standard on every building - then the comparison that makes a portfolio decision possible. Independent: no panels sold, no referral fees. Paid the same for a yes or a no.
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Ranking & triage
Sites ordered by decision value so capital goes to roofs worth pursuing first.
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Written verdicts
Pursue, pursue with conditions, or park - with the assumption that would change it.
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LiDAR geometry & shading
3D environments from LiDAR and satellite, with solstice near-field shading views. The report states how yield treats near-field loss for that site.
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25-year financials
NPV, IRR, payback, and cashflow from stated assumptions - CAPEX as a band, not a theatre number.
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Engineering flags
Wind, structure, grid, and planning screens with severity and a named next step - not certification.
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Board pack
Full report per site plus ranked comparison and a one-page summary for committee.
Fixed fee. Written terms before paid work starts. A park verdict across a portfolio is as valuable as finding a winner.
Portfolio example output
Portfolio end-state: a full report on each building, a ranked comparison across them, and a one-page board summary. The comparison is the product.
The Four-Site Pack end-state: a full report on each building, a ranked comparison across them, and a one-page board summary. Two buildings assessed individually is £4,500. Four buildings is £4,950 - the comparison is the product.
What the Pack delivers
- Order by decision value Rank roofs so capital goes to the strongest cases first.
- Verdict on every roof Pursue, conditional, or park - written, with the assumption that would change it.
- Full report per site Same standard as a single-site assessment on each building in the Pack.
- One-page board summary Committee-ready comparison across the set - not four separate decks to reconcile.
The model inside every report
One LiDAR 3D environment runs the chain: roof geometry, near-field shading, site-specific yield, 25-year financials, and engineering flags - then a written verdict. The same model you see here lands in the pack.
What’s in the pack
Board-ready PDF artefacts at the same standard on every building - a portfolio assessment that ranks sites and says what to pursue first, plus the full individual report on each roof. The covers are real; the internals stay with the client.
Portfolio assessment · Confidential
Cover of a Stage1Energy portfolio assessment - sites ranked with a pursue-first recommendation; open any site for the full individual report.
Individual site report · Confidential
Cover of a Stage1Energy commercial rooftop PV feasibility report.
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Ranked comparison Portfolio ordering by decision value - what to pursue first across the Pack.
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Written verdict Pursue, pursue with conditions, or park - with the assumption that would change it.
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LiDAR 3D & shading 3D environment extracts with solstice near-field shading views; the report states how yield treats near-field loss.
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25-year financial case NPV, IRR, payback, and cashflow from stated assumptions.
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Engineering flags Wind, structure, grid, and planning screens with severity and a named next step.
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Board summary + full report One-page committee summary, plus a full individual report behind every ranked site.
Scope & limits
Feasibility screening you can defend - with the edges stated, not buried.
Hybrid inputs
Geometry from satellite and LiDAR. Near-field shading is modelled and rendered from the 3D environment as captured; the report states whether loss adjusts the headline yield. LiDAR is a snapshot - growth since capture and temporary plant will not appear. Temporary or seasonal obstructions may still need eyes on site.
Not survey or design
Outputs are not procurement, MCS design, or construction documents. Structural, wind, grid, and planning flags identify risk - formal sign-off sits with qualified professionals.
What we know we don’t know
P50 generation with a site-specific P90. CAPEX as a band until an installer quote replaces it. Returns shown across that band. Full detail on the methodology page.
Setbacks
Geometric minimums in the model. Real fire, access, and fall-protection setbacks are larger and reduce panel count.
Fixed fees. Clear ladder.
See what an assessment includes. Join the waiting list to register interest for one roof or a portfolio.
Join waiting list →No VAT chargeable. Written terms before paid work starts.