ROOFTOP POTENTIAL, IN PERSPECTIVE
Bring your solar
plan to light.
Explore system size, panel count, annual energy value and simple payback. Start with your electricity use, then test the assumptions.
FOLLOW THE ENERGY
One rooftop. Four useful questions.
Solar System Size Calculator
Estimate capacity from annual use.
Open tool →Solar Panel Count Calculator
Estimate a panel count.
Open tool →Solar Savings Calculator
Estimate annual bill offset.
Open tool →Solar Payback Calculator
Explore simple payback.
Open tool →Read the How to Read a Solar Quote Without Mixing Up the Numbers guide →
A better estimate starts
with a full year.
Annual electricity use gives more context than one month. Production depends on location, shade, orientation and system losses. Treat the result as a planning scenario before a site-specific assessment.
Capacity
System size and panel count describe the equipment, not a final roof layout.
Energy value
Electricity used at home and exported power may have different values.
Payback
Simple payback leaves out financing, maintenance and future rate changes.