https://stage1energy.com/insights Guides on commercial solar feasibility in the UK — payback, NPV, engineering flags, and process. en-gb Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/25-year-solar-cashflow-model https://stage1energy.com/insights/25-year-solar-cashflow-model How a 25-year cashflow model works for UK commercial rooftop solar — annual benefits, capex, degradation, and what feeds NPV and IRR. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/commercial-solar-business-case https://stage1energy.com/insights/commercial-solar-business-case How to build a board-ready UK commercial rooftop solar business case — structure, metrics, risks, and what feasibility should deliver first. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/commercial-solar-desk-study-uk https://stage1energy.com/insights/commercial-solar-desk-study-uk What a commercial solar desk study — remote, evidence-based feasibility — covers for UK rooftops. Data sources, accuracy, limits, and when to escalate to surveys and detailed design. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/commercial-solar-npv-explained https://stage1energy.com/insights/commercial-solar-npv-explained Net present value for UK commercial rooftop solar — how NPV is calculated, what discount rate to use, and why boards prefer it over simple payback. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/commercial-solar-structural-assessment https://stage1energy.com/insights/commercial-solar-structural-assessment When a UK commercial rooftop needs a formal structural assessment for solar PV — scope, cost, and how feasibility screening decides if you need one. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/dno-solar-application-commercial https://stage1energy.com/insights/dno-solar-application-commercial How to navigate a DNO solar application for UK commercial rooftop PV — G99 process, timelines, costs, and what to screen before you apply. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/engineering-flags-commercial-solar https://stage1energy.com/insights/engineering-flags-commercial-solar Four UK commercial rooftop solar engineering flags — wind, structure, DNO, and planning — and why screening them early saves budget. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/feasibility-study-vs-installer-quote https://stage1energy.com/insights/feasibility-study-vs-installer-quote How an independent UK commercial rooftop solar feasibility study differs from an installer quote — purpose, assumptions, cost, and which you need first. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/how-accurate-solar-generation-estimates https://stage1energy.com/insights/how-accurate-solar-generation-estimates How accurate UK commercial rooftop solar generation estimates are at feasibility stage — typical variance, error drivers, and how to read yield in board papers. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/how-to-read-solar-feasibility-report https://stage1energy.com/insights/how-to-read-solar-feasibility-report How UK estates teams read a commercial rooftop solar feasibility report — verdict first, assumptions second, flags third. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/independent-solar-feasibility-study-uk https://stage1energy.com/insights/independent-solar-feasibility-study-uk Why UK estates teams and landlords commission an independent solar feasibility study instead of relying on installer assessments — incentives, sourcing, and what independence changes in the verdict. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/is-commercial-solar-worth-it-uk https://stage1energy.com/insights/is-commercial-solar-worth-it-uk When UK commercial rooftop solar is worth pursuing — and when it is not. Self-consumption, payback, landlord vs owner-occupier, and how to test a specific roof before you commit budget. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/permitted-development-commercial-solar https://stage1energy.com/insights/permitted-development-commercial-solar When UK commercial rooftop solar qualifies as permitted development under Class J — and when full planning permission is needed. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/portfolio-solar-feasibility-screening https://stage1energy.com/insights/portfolio-solar-feasibility-screening How UK estates teams run multi-site commercial solar portfolio assessment — filters, sequencing, free screening, and programmes from a handful of roofs to 80+. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/rooftop-solar-feasibility-study-uk https://stage1energy.com/insights/rooftop-solar-feasibility-study-uk What a rooftop solar feasibility study covers for UK commercial buildings — yield, payback, engineering flags, cost, and how screening precedes the full study. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/self-consumption-export-commercial-solar https://stage1energy.com/insights/self-consumption-export-commercial-solar How self-consumption and export drive UK commercial rooftop solar economics — load matching, SEG tariffs, and what to model before feasibility spend. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/solar-feasibility-for-consultants https://stage1energy.com/insights/solar-feasibility-for-consultants How UK property consultants and sustainability advisers use commercial rooftop solar feasibility — engineering flags, board-ready output, and partner options. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/solar-feasibility-for-reits https://stage1energy.com/insights/solar-feasibility-for-reits How UK REITs and institutional landlords screen commercial property portfolios for rooftop solar — capex governance, ESG reporting, portfolio prioritisation, and independent feasibility. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/solar-investment-board-paper https://stage1energy.com/insights/solar-investment-board-paper What UK boards need in a commercial rooftop solar investment paper — feasibility evidence, financials, risks, and approval sequencing. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/solar-irr-vs-payback-commercial https://stage1energy.com/insights/solar-irr-vs-payback-commercial IRR vs payback for UK commercial rooftop solar — when each metric matters, how they disagree, and what to present to a board. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/structural-screening-commercial-roof-solar https://stage1energy.com/insights/structural-screening-commercial-roof-solar How to screen UK commercial rooftop structural suitability for PV before a full survey — load, age, and when to escalate. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/validate-installer-solar-quote-uk https://stage1energy.com/insights/validate-installer-solar-quote-uk How UK estates teams and asset managers validate a commercial solar installer quote — assumptions to check, red flags, and when to commission independent feasibility before you proceed. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/what-is-commercial-solar-feasibility-study https://stage1energy.com/insights/what-is-commercial-solar-feasibility-study What a UK commercial rooftop solar feasibility study covers — scope, outputs, and when estates teams and landlords should commission one. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/what-is-in-solar-feasibility-report https://stage1energy.com/insights/what-is-in-solar-feasibility-report What UK commercial rooftop solar feasibility reports include — generation, financials, engineering flags, grid screening, and a written verdict. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/wind-loading-commercial-roof-solar https://stage1energy.com/insights/wind-loading-commercial-roof-solar How wind uplift affects UK commercial rooftop PV — BS EN 1991-1-4 screening, ballast vs penetration, and when mounting needs confirmation. Sat, 11 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/commercial-solar-feasibility-2026 https://stage1energy.com/insights/commercial-solar-feasibility-2026 What UK commercial rooftop solar feasibility looks like in 2026 — tariffs, grid constraints, capex trends, and how estates teams should approach screening and dossiers. Fri, 10 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/commercial-solar-feasibility-checklist https://stage1energy.com/insights/commercial-solar-feasibility-checklist Checklist before commissioning a UK commercial rooftop solar feasibility study — what to gather, red flags, and when to escalate to a full dossier. Fri, 10 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/commercial-solar-payback-uk https://stage1energy.com/insights/commercial-solar-payback-uk How payback is calculated for UK commercial rooftop solar — assumptions, typical ranges, and what makes a roof viable before you commission surveys. Fri, 10 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/feasibility-vs-design-solar https://stage1energy.com/insights/feasibility-vs-design-solar How UK commercial rooftop solar feasibility differs from detailed design — scope, deliverables, cost, and when to move to engineer and installer design. Fri, 10 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/feasibility-vs-structural-survey-solar https://stage1energy.com/insights/feasibility-vs-structural-survey-solar How UK commercial rooftop solar feasibility screening differs from a structural survey — scope, liability, cost, and when to commission each. Fri, 10 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/g98-g99-solar-connection-explained https://stage1energy.com/insights/g98-g99-solar-connection-explained How ENA G98 and G99 govern UK commercial rooftop solar grid connection — thresholds, timelines, and what to screen before surveys. Fri, 10 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/net-zero-solar-commercial-property-uk https://stage1energy.com/insights/net-zero-solar-commercial-property-uk How UK commercial landlords and estates teams use solar feasibility screening for net-zero and ESG programmes — evidence, portfolio triage, and what boards expect to see. Fri, 10 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/solar-feasibility-study-cost-uk https://stage1energy.com/insights/solar-feasibility-study-cost-uk What independent UK commercial solar feasibility studies cost in 2026, what drives price, and how fixed-fee dossiers compare with consultant day rates. Fri, 10 Jul 2026 00:00:00 GMT https://stage1energy.com/insights/when-to-order-solar-feasibility-study https://stage1energy.com/insights/when-to-order-solar-feasibility-study When UK estates and asset teams should order a commercial rooftop solar feasibility study — and when free screening is the better next step. Fri, 10 Jul 2026 00:00:00 GMT