Know what your solar site will really produce — before you build.
SriWatt is a small device you place on site. It measures the real sunlight and weather there, then corrects your forecast — so banks and buyers trust the numbers.
The four horsemen of forecast inaccuracy
Solar simulations run on garbage in, garbage out. Four error sources quietly wreck the forecast — and the finance that depends on it.
Bad metadata
30% of projects have missing or wrong tilt/azimuth data — enough to throw the forecast off by more than 15% (NREL).
Micro-shading
A vent, pole or single wire shading just 1–2% of a system can cut its output by 30–50%.
Albedo guesswork
The default “0.2” ground-reflectivity assumption misses up to 12.4% of the gain bifacial panels actually capture.
Soiling losses
A flat 2% dust assumption is fiction. In dry climates losses reach 35%, building ~0.5% a day.
$5B wasted every year
Roughly 94% of solar pre-sales spend is lost, and lenders add 10–35% to finance costs — almost all of it for the want of real, on-site data.
One small device. Three steps.
SriWatt sits between your simulation tool and your customer. It adds the one thing a desktop forecast can’t: measured reality.
SriWatt records real sunlight, surface heat and shading at the actual site — second by second, not from a 4 km satellite cell.
Our model learns the gap between your simulation and what the site really does, then corrects the forecast for that exact location.
You get a clear, bank-ready P50/P90 yield report. Faster approvals, sharper returns, fewer arguments about the numbers.
Works with the tools you already use — PVSyst, Helioscope, SAM or your own pipeline. We add the measured layer; we don’t replace your stack.
Built for real sites
Industrial rooftops
Factories and sheds where heat, dust and vents hit output hardest.
Farms & estates
Rural and agri sites where local weather changes field to field.
Developers & IPPs
Portfolio owners who need bankable numbers, fast, across many sites.
One rugged unit, anywhere the sun hits
Solar-powered, weather-sealed and self-reporting — from dusty rooftops to fields, coastlines and estates.
Numbers from the field, not from a deck
Early field deployments and signed pipeline back these figures — with shipping hardware, not slideware.
Field-tested on 1,200commercial & industrial solar sites · Live clusters in Ahmedabad and Surat · Partnered with a solar federation of 1,500 EPCs.
“The trust it builds with the customer is priceless. Showing them real data from their own roof removes almost all performance objections.”
— Solar federation member
“The SriWatt report isn’t just a sales tool — it’s a financing tool. It dramatically sped up our talks with the banks.”
— Solar federation member
“A near-40% conversion rate is unheard of in this industry. The tool pays for itself many times over.”
— Solar federation member
Reserve your devices from the first 5,000
Tell us how you build solar, and the calculator sizes your fleet in seconds. Then book your priority allotment from the first batch of 5,000 devices.