Free solar calculator
Your roof could
pay you back
Find out how much energy your roof can produce and how much you'd save — in 1 minute, completely free.
8,472
kWh per year
Save on every bill
estimated savings
Your roof produces
~8,500 kWh
per year (avg.)
You could save
On every bill
lower energy bills
Pays for itself in
~7 yrs
on average
How it works
From curiosity to clarity
No technical knowledge needed. Just point to your roof and we'll do the math.
Point to your roof
Find your home on the map and we auto-detect your coordinates and local solar data.
Describe your roof
Roof size, slope and orientation — we guide you through each question so you never have to guess.
Add your energy use
Monthly consumption and usage pattern. We pre-fill your local electricity prices when available.
See your numbers
Savings, payback period, 25-year cash flow projection, and a personalized Roofko Score.
Backed by science
Not guesswork — real data
Our calculations use the same satellite irradiance data trusted by governments and energy companies worldwide.
NASA & PVGIS data
Real solar irradiance measurements for your exact coordinates — not regional averages.
Financial projections
25-year cash flow analysis using local electricity prices, panel degradation, and inflation rates.
Roofko Score
A clear 0-100 rating that tells you if solar is worth it for your specific roof — no jargon.
Free instant results
See your full report on screen instantly — no account needed. Want it saved? Get the full 25-year report and optional installer quotes by email.
When you're ready to move forward
Everything you need to go solar
Find a trusted installer
Every installer on Roofko is verified. Compare ratings, read real reviews, and request quotes — all in one place.
Verified pros
Vetted before joining
Real reviews
From real homeowners
Free quotes
One click, multiple bids
Explore financing options
Compare solar loans from banks and lenders. Find the right rate, term, and monthly payment for your project.
Compare rates
Side-by-side from multiple lenders
Flexible terms
Find what fits your budget
Quick applications
Request info in one click
Explore solar worldwide
Solar potential by country
Browse estimated solar potential, electricity prices, and savings for major markets — or see how every country stacks up.
Every day without solar
is money on your roof
It takes 1 minute to find out what your roof is worth.