Estimate annual savings and payback from your electric bill, system size, install cost, and local sun hours.
Estimated Annual Savings
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Enter a rough solar setup to see how much bill offset and payback it might produce.
Tap an example to prefill the calculator with sample values.
Suburban 7.2 kW system
$180 bill with solid sun exposure
A mid-size homeowner scenario where rooftop solar covers most of the annual bill without being wildly oversized.
Result: This is the kind of setup where the savings case usually feels tangible rather than theoretical.
Smaller lower-bill home
$110 bill with 4.8 kW array
A tighter consumption profile where savings still help, but bill caps keep the upside from stretching forever.
Result: The payback can still work, but overbuilding the system would cap savings against the current bill faster.
High-bill sunny region
$260 bill with 9.5 kW system
A heavier-usage household where strong sun hours make the production estimate and annual savings much easier to justify.
Result: Higher existing spend gives the solar output more room to offset real utility cost before the bill cap kicks in.