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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.
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.
On the analytics side, RoofSolar competes within Productivity, Home and Climate Tech — topics that collectively have 835.3k followers on Product Hunt. The dashboard above tracks how RoofSolar performed against the three products that launched closest to it on the same day.
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.
For a complete overview of RoofSolar including community comment highlights and product details, visit the product overview.
Samir Asadov