Rooftop Solar Designer

Type your address and we size a system from satellite data and your usage. Fine-tune it on the roof anytime.

Address

Start typing, then pick a suggestion, or click a rooftop on the map.

System size

Monthly electric bill$

100% offset right-sizes the system to your usage.

Include a home battery (recommended under NEM 3.0: stores your solar for the pricey evening peak and keeps the power on in an outage)

Advanced settings roof shape, imagery,
sun & shade

Satellite imagery

Esri World Imagery, most areas 2022–2025. Where survey-grade roof data is available, it's applied automatically.

Roof detection (automatic)

Uses survey-grade roof data automatically where available (real roof planes, shading-aware production and imagery date); otherwise the OpenStreetMap footprint.

Existing system (design an add-on)

I already have solar, design an expansion

Assumptions (edit to re-run)

Electricity rate$ /kWh

Roof edge setback ft

Manual roof area ft²

Where available, roof planes and production come from Google's Solar API (survey-grade, shading-aware, dated imagery); otherwise planes are inferred from the OpenStreetMap footprint and production from regional averages. Savings use NEM 3.0 net billing (on-site use at your retail rate, exports at a low avoided-cost credit). Equipment, specs & pricing are illustrative and reflect mid-2026; confirm current products and a firm quote with a licensed installer.

Like your design? Get a free, no-pressure expert review ↓

See if solar is right for your Northern California home

Share a few details and a specialist will get back to you with a free, no-obligation look at whether solar makes sense for your roof, your PG&E bill, and your local sun. We’ll also tell you if a battery for PSPS backup is worth it.

We only contact you about solar for your home
Free and no obligation
We never sell your information. We share it only with the local specialist you ask us to connect you with

Golden State Solar Guide is an independent guide, not a solar installer. We give you honest information, then connect you with a vetted, licensed local solar professional if you want one. You’re never obligated to buy.

Independent & free Licensed local pros No spam · no pressure

Request a free solar check

First name

Last name

EmailMobile phoneStreet address

City

State

ZIP

Your PG&E usage (Green Button) or a recent bill (optional; a full year of usage gives the most accurate estimate)

How do I get my PG&E usage or bill?

Best — a full year of usage (Green Button):

Sign in at pge.com ↗.
Open Energy Usage Details (under “All usage and rates tasks”).
Click Green Button — Download My Data, choose “Export usage for a range of days,” pick the last 12 months, and download it. PG&E gives you a CSV or a .zip — either one works here, just upload it as-is.

Or a recent bill (quicker): on the dashboard, open Billing → All billing tasks → Billing & Payment History → View Bill PDF. A photo of a paper bill works too.

Upload either here — a year of usage lets us size every option to your real consumption. Stuck? See PG&E’s usage-download guide ↗, or skip it and we’ll estimate from your address.

Green Button CSV or .zip, a bill PDF, or a photo. We share it only with the specialist who reviews your home.

I already have solar (I’m exploring adding panels or a battery)

We use your details only to talk with you about solar. We never sell your information.