RoofSolar
Financial-grade solar analysis for your roof — in 3 minutes
RoofSolar launched on May 19, 2026 with 3 votes, #3,449 of 20,538 launches that month and more than 50% of that year's launches.
What it does
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.
Free solar panel calculator powered by AI. Get a 25-year cashflow model, payback period, export earnings, battery & EV savings in under 3 minutes. Works worldwide.
Enter your address and get a 25-year cashflow model — payback, export earnings, battery economics, EV savings — tailored to your home and country. A built-in AI advisor explains every number and answers your questions in plain English. We fetch live solar irradiance for your exact location from PVGIS. Orientation, pitch and shading — we calculate optimal panel placement. Local tariffs, grants, consumption and financing — pre-filled for your country. Chat with your AI advisor — plain-English answers about any number or scenario. Most solar tools hand you a stack of numbers and leave you guessing what they mean. RoofSolar pairs every analysis with an AI advisor that's read all 25 years of…from roofsolars.netlify.app
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- HWHelios – what plug-in solar could generate for any address in BritainMay 2026 · helios.southlondonscientific.com · ▲126
Plug-in solar panels (no electrician needed) have just become legal in the UK and will go on sale soon. Helios estimates how much electricity a typical installation could generate at a given address and what that's worth against your tariff. It uses UK government LIDAR data to reflect the actual skyline, so it knows whether there's a building or a hill blocking the sun. Caveats: - Outside LIDAR coverage (most of Scotland and Wales) it falls back to a synthetic horizon (less accurate). - Trees and recent developments (post-2022 or so) may not be in the data, and some address placements could…
AberSolarCalculatorAug 2026 · abersolarcalculator.com · ▲2Solar calculator with roof direction & tax credit
My solar died for 6 months, so I built a watchdogAug 2026 · sunranker.com · ▲15Hi HN, Shawn here. My rooftop system lost about half a year of production and nobody told me. Not the installer, not the monitoring app, not the utility. I found out from an electric bill that made no sense, then spent weeks digging through the monitoring portal by hand. SunRanker is what I wished existed that day. Connect a system once (Enphase OAuth, or a SolarEdge site ID plus API key) and it reads production daily, shows it in plain language, and emails you when something actually changes. Three alerts only. The connection broke, the monitoring went quiet, or output has been well below…
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