arasniff exists for one reason: to give people real numbers about solar — before a salesperson gives them inflated ones.
Search for solar savings and you'll find tools that hide their assumptions, inflate the numbers, and exist mainly to capture your phone number for a sales call. The math is a black box, and the black box always says "yes, buy now." That's not information — it's a pitch wearing a calculator's clothes.
arasniff is run by Manish, an energy engineer with an M.Tech in Energy Engineering from NIT Tiruchirappalli and a background in electrical engineering. Crucially: I don't sell solar systems, I'm not an installer, and no brand pays me for coverage. That means I have no reason to inflate a single number — and every reason to keep them honest.
The calculators pull real satellite solar data from NASA's POWER project for your exact location, apply transparent engineering math you can see and change, and tell you honestly when something isn't worth it — like rooftop wind, which the tool will usually advise against. When a number can't be verified, it's flagged as an estimate, not dressed up as fact.
Every assumption is visible and editable. No black boxes.
No panel sales, no installer deals, no paid placements.
Real NASA and public data, with sources named on the page.
Estimate rooftop solar savings with India's PM Surya Ghar subsidy applied automatically, run the same honest math anywhere in the world, check whether wind is viable at your site, explore live NASA solar data, and read guides written to inform — not to sell.
Real data, every assumption shown, zero sales pitch.
Open the calculator →