Enter a home address. We build an interactive roof model from high-resolution aerial
imagery, shading-aware irradiance data, and PVWatts® production simulation from the
National Laboratory of the Rockies (formerly NREL).
Locating the building…
Coverage depends on Google Solar API availability — most US urban and suburban
addresses are supported. Nothing is saved without your consent.
kWh/kW/yr
Your solar snapshot
Ways to pay — and what each could save you
Estimated with standard assumptions for this location and system.
These four financing paths are the same ones full members can fine-tune input by input.
Crunching the numbers…
Informational estimate, not an installation quote. “25-yr savings”
is cumulative and net of what you pay (purchase, loan, lease, or PPA). Battery storage is not
included in this snapshot. See the
full methodology.
Get your full analysis — free
Adjust every assumption, add battery storage, compare net-metering and time-of-use
scenarios, see hourly production & battery dispatch, audit the lease/PPA fund math,
and export a complete proposal. SIA is free for homeowners — no account, no
salesperson, and we never sell your information.
