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Writing a solar investment board paper

Boards approve capital, not enthusiasm. A credible solar investment paper distils feasibility into decision-ready material - recommendation, headline economics, material risks, and the spend you are asking to authorise next.

Uncategorised Updated 2026-07-11 3 min read

Capital committees see solar proposals regularly - and reject or defer many because the paper confuses a sales brochure with an investment case. A sound solar investment board paper does one job: it asks directors to approve a defined next step on the strength of independent feasibility, with risks visible and alternatives considered.

What the board is actually deciding

Clarify the approval ask before writing. Mixing stages confuses committees.

  • Stage A - Confirmatory work

    Authorise structural survey, roof inspection, and formal grid enquiry. Budget typically £5,000–£15,000.

  • Stage B - Capital install

    Authorise full project capex after surveys, quotes, and final design. Often six figures plus.

  • Stage C - Portfolio programme

    Approve feasibility spend across multiple sites and a capital envelope for tranche one.

  • Feasibility first

    Belongs before Stage A. Commission via site assessment or advance from waiting list.

A paper that smuggles full install approval behind a feasibility summary will get sent back.

What boards actually need

A one-to-two-page recommendation with explicit ask and risks - not thirty pages of technical detail alone. Attach the full feasibility report as evidence.

  • Half page

    Recommendation

    State pursue, defer, or do not pursue in the first paragraph. Include estimated capacity, annual generation, payback or NPV, and total capex order of magnitude. Name the approval requested today.

  • Half page

    Strategic context

    Link to net-zero targets, energy cost volatility, tenant demand, or asset enhancement. One paragraph - boards do not need a climate essay.

  • One page

    Site summary

    Address, building use, roof description, tenancy and lease notes, and why this site was selected. Map or aerial image helps.

  • One page

    Financial summary

    Table format: capex, annual savings, payback, NPV, key sensitivities. State tariff, export, and self-consumption assumptions. Figures are feasibility-grade - see how to read a solar feasibility report.

  • One page

    Risks and mitigations

    Structure, grid, planning, lease, and data quality - each with a mitigation. Example: “Structural capacity unconfirmed - mitigate via appointed engineer survey in approved budget.”

  • Half page

    Next steps and timeline

    What happens if approved: survey appointments, tender approach, target install window, responsible owner.

  • Appendices

    Evidence pack

    Full feasibility report and optionally market context such as commercial solar feasibility in 2026.

Evidence the board should see

  • IndependenceFeasibility, not installer quotes alone - feasibility vs quote.
  • Written verdictWith conditions, not only spreadsheets.
  • FlagsEngineering and grid at screening level - honest about what is unconfirmed.
  • MethodologyLink or summarise modelling approach. Stage1Energy publishes methodology.
  • LimitsFeasibility is not design or structural sign-off - vs design, vs survey.

Directors trust papers that say what could go wrong.

Financial presentation tips

Use organisation-familiar metrics. Show one sensitivity table: electricity price ±10%, self-consumption ±10%, capex ±10%. Avoid precision falsehood - “approximately five years, subject to tenant consumption confirmation” beats “4.37 year payback” from estimated load. Do not double-count benefits.

Portfolio papers

Portfolio approvals need a ranking table: site name, capacity, payback, NPV, verdict, proposed year. Explain screening methodology - portfolio solar feasibility screening - so directors know these are the best candidates, not the only ones considered.

Common reasons papers fail

Failure modes

No clear ask. “Note progress” achieves nothing. Installer quote as primary evidence. Missing lease or landlord angle. Ignored grid risk. Overstated generation certainty. Burying the verdict - recommendation must be visible on page one.

Using Stage1Energy reports in papers

Stage1Energy’s commercial solar feasibility reports are formatted for extraction: executive summary, financial tables, flags, and verdict. Fixed fee at join the waiting list, five working days standard delivery.

Lift the summary and tables into your template; attach the full PDF as appendix. Waiting list supports the portfolio narrative without full report cost on every address.

Closing the loop after approval

Record board conditions in the project file. If approval was “proceed subject to structural survey,” the next paper should open with survey results - not repeat feasibility verbatim.

Good board papers make the eventual install paper easier: feasibility answered “should we?” surveys answer “can we?” quotes answer “who and how much?”

Template language for conditions

Resolution tip

When feasibility returns “pursue with conditions,” mirror those conditions verbatim in the resolution text. Directors should vote on the same caveats the feasibility author documented - not a softened version that disappears from the minutes.

Examples: “approval subject to structural survey confirming ballast loading”; “approval subject to landlord consent under clause X”; “approval subject to G99 offer within £Y contingency.” If conditions fail, the paper trail should show why the project paused.

Questions

FAQ

Can I attach a feasibility report instead of writing a board paper?

Attach it as evidence, but do not substitute it for a concise paper. Directors need a one-to-two-page recommendation with explicit ask and risks, not thirty pages of technical detail alone.

What financial metrics do UK boards expect?

Payback period and NPV are most common for commercial rooftop PV. IRR may appear where the organisation uses it for other capex. State assumptions clearly.

Should the paper include installer quotes?

Not usually at first approval. Initial approval is often to proceed to survey and tender based on feasibility. Quotes belong in a subsequent procurement paper unless tender is complete.

One roof, or the whole estate.

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