Worldwide Solar Sizing Engine
Global Solar & Battery Calculator
Estimate your ideal solar array size (kWp), recommended battery storage (kWh), projected monthly electricity savings, and capital payback period across any currency.
System Parameters
$250
$50Est. 1,389 kWh/month$8,000+
Standard Assumptions:Calculated with standard 78% system performance ratio, average regional tier-1 module efficiency, and local average retail utility tariffs ($0.18/kWh).
Recommended Solar Array
9.3 kWp
Yields approx. 39 kWh/day (14,235 kWh/yr).
Recommended Battery Storage
10 kWh
Lithium LiFePO4 chemistry with 6,000+ cycle life
Est. Annual Bill Savings
$2,562
~$214/month saved on utility invoices.
Estimated Payback Period
7.3 Years
Estimated 25-yr net return: $45,442
Carbon Offset Impact
Your solar array offsets approximately 7.4 tonnes of CO₂ per year.
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