Free calculator for contractors to size solar generators, battery banks, and solar arrays for jobsite use. Enter your tools, mark which ones run simultaneously, and get continuous output, peak surge, battery capacity, and solar array size instantly. No account needed. PDF report unlocks after email signup.
Built this because contractors kept either massively oversizing their generator (wasting $2k+) or undersizing and killing their workday. The calculator accounts for surge multipliers and simultaneous tool use — the two things most online calculators ignore. Free to use, no account needed.
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