Solar Array Size and Panel Count Estimator
Estimates the solar system size, panel count and roof area a home needs to offset its annual electricity use, for homeowners comparing premium solar quotes.
Open the calculatorHome / Free tools
Free toolsFree home solar and storage calculators and planners
Practical, no-signup tools built by the Solarholm team. Free to use, free to link to, and honest about their assumptions.
Home Solar Payback and Lifetime Savings Calculator
Estimates the net cost, payback year and lifetime savings of a home solar system over your ownership horizon, for homeowners judging whether a quote pays for itself.
Open the calculatorHome Battery Backup Sizing Calculator
Estimates how many home battery units you need, and what they cost, to keep essential circuits running through an outage of a given length.
Open the calculatorFree to use and to link
https://solarholm.com/tools/These tools are free for anyone, including other publishers. If one helps your readers, a link back to the tool page is appreciated.