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RoofSolar
Financial-grade solar analysis for your roof — in 3 minutes
Most solar calculators give you a payback number with no working underneath. RoofSolar runs the actual 25-year cashflow for your address using live PVGIS irradiance data — IRR, payback, export-tariff earnings, battery economics, and EV savings — worldwide, no signup. Built by a project-finance modeler. Free; Pro PDF €3.99.
Most "solar calculators" online give you a single payback number with no working underneath. Coming from project finance — where solar is literally modelled as a 25-year asset with IRR, refinancing, and battery degradation — that always felt absurd to me.
RoofSolar runs the same DCF logic, just pointed at your home: enter your address and you get a 25-year cashflow, IRR, payback period, export-tariff earnings, battery economics, and EV-charging savings. Live PVGIS irradiance data, no signup, worldwide coverage. The Pro PDF (€3.99 one-off) gives you something you can hand to your installer or accountant — actual numbers under each assumption, not just a glossy quote.
Built this because I kept seeing friends sign 20-year solar loans on the back of a one-line "you'll save €X/month" promise. You deserve to see the cashflow.
Free analysis is the whole core product. Pro just unlocks the PDF export. Would love your feedback — especially which country's tariff rules you want me to refine next.
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About RoofSolar on Product Hunt
“Financial-grade solar analysis for your roof — in 3 minutes”
RoofSolar was submitted on Product Hunt and earned 3 upvotes and 1 comments, placing #155 on the daily leaderboard. Most solar calculators give you a payback number with no working underneath. RoofSolar runs the actual 25-year cashflow for your address using live PVGIS irradiance data — IRR, payback, export-tariff earnings, battery economics, and EV savings — worldwide, no signup. Built by a project-finance modeler. Free; Pro PDF €3.99.
RoofSolar was featured in Productivity (652.3k followers), Home (170k followers) and Climate Tech (13k followers) on Product Hunt. Together, these topics include over 146.1k products, making this a competitive space to launch in.
Who hunted RoofSolar?
RoofSolar was hunted by Samir Asadov. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
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Samir Asadov