Use it anonymously or create an account – your choice.
Roof planning, battery sizing, and permit-ready reports in one place.
Start modeling your roof and solar production in seconds. No login required.
Or create an account to save projects, revisit designs, and generate HOA/city reports later.
Guest mode runs everything in your browser and via live APIs. Nothing is saved to our servers.
Accounts unlock saving projects, editing later, and one-click reports.
Anonymous use
Just want to see your roof?
- Run PVWatts on your address without signing up.
- Sketch panel zones on satellite imagery.
- Play with tilt, azimuth, and battery sizes.
- No data stored, no emails, no commitments.
Create an account
Come back to finished projects.
- Save multiple roof layouts as “projects.”
- Store your loads, battery configs, and notes.
- Generate HOA and city permit report packages.
- Unlock product matching and upgrade suggestions.
Pro-ready tools
Built for homeowners and installers.
- Use it to pre-qualify your own house.
- Or as a sales/design tool for multiple roofs.
- Export numbers into quotes and contracts.
- Roadmap: team logins, multi-site portfolios.
How PVFetch works
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1
Run a quick roof plan.
Enter your address, system size, and optional battery. We pull location-specific sun data and show monthly,
daily, and hourly production with an interactive roof sketch.
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2
Explore “What do I need?” calculators.
Estimate how much solar and storage you’d need for backup-only vs whole-home coverage, and see suggested array,
battery, and inverter sizes.
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3
Upgrade to saved projects (optional).
When you’re ready to keep your work, create a free account. We’ll store your projects so you can tweak layouts,
record loads, and export data later.
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4
Generate reports & product suggestions.
Turn a saved project into an HOA layout summary, a basic city permit packet, or a product list that maps your
design into actual hardware.
You’re never locked in: use PVFetch as a one-off calculator, or build a portfolio of detailed projects over time.
Guest mode available
No credit card required
Built on real PVWatts data