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Free tools & guides
Commercial Solar Resources, Guides & Calculators
Practical, up-to-date tools for UK businesses weighing up commercial solar, battery storage, EV charging and heat pumps — cost guides, ROI and savings calculators, and plain-English guides to tax relief, grid connection and compliance. All free, no email required.
Start a Free Energy AssessmentCalculators & Tools
Solar ROI Calculator Estimate payback and lifetime return on a commercial solar system. Battery Savings Calculator Model peak-shaving and arbitrage savings from commercial battery storage. EV Charging Calculator Size and cost workplace and fleet EV charging for your site. Carbon Savings Calculator Estimate the CO2 your business avoids by switching to solar. Heat Pump Calculator Compare running costs and savings for a commercial heat pump. Electricity Bill Analyzer Break down your commercial electricity bill to find the savings. Free Energy Audit Quiz Answer a few questions to get a tailored energy-saving plan.
Guides
Commercial Solar Cost Guide 2026 pricing by system size, cost per kWp, and ROI worked examples. Capital Allowances on Solar AIA, 50% First-Year Allowance and how to claim tax relief on commercial solar. G99 Grid Connection Guide The DNO application process for commercial systems above 50kW, explained. MEES & Solar for Landlords How solar helps commercial property meet MEES minimum EPC standards. Solar PPA Guide Power Purchase Agreements vs outright ownership for commercial solar.