Home solar,
calculated
in twenty seconds.

Enter an address. Helios fans out ten paid APIs in parallel through a single unified API: tariff, weather, permits, installer pricing, financing, news, property value, demographics, reviews, carbon price. Out comes a 25-year net present value, payback period, and recommended system.

10
paid APIs
1
SDK integration
<20s
end to end
parallel · fan-out
10/10
01tariff
612ms
02weather
428ms
03pricing
1340ms
04finance
806ms
05news
1960ms
06permits
14ms
07property_value
1132ms
08demographics
774ms
09reviews
1542ms
10carbon_price
518ms

Normally this integration layer is a week of work.

Ten API signups. Ten billing dashboards. Ten response shapes to normalize. Ten keys to rotate. We did it with one SDK integration and a single bill. Metered pay-per-use, zero key management, zero onboarding.

tariff612ms
weather428ms
pricing1340ms
finance806ms
news1960ms
permits14ms
property_value1132ms
demographics774ms
reviews1542ms
carbon_price518ms

Address in. NPV out.

Drop an address

Geocoded to a utility, irradiance value, permit history, and median home value. La Jolla or wherever.

Ten APIs fan out

One asyncio.gather call, one unified SDK. The ticker you see above is the real thing, streaming real latencies.

A number you can quote

25-year NPV, payback period, CO₂ avoided priced at the social cost of carbon, ROI as a percent of your home value.

Run it on your house.

Twenty seconds, no signup. Create an account if you want to save runs across web and mobile.