Panel Upgrade Calculator
Find out if your electrical panel can handle new loads like an EV charger, heat pump, or solar — or if you need an upgrade.
Backed by EIA data~2 min
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Check all existing and planned electrical loads.
Existing
Adding
Results
Select your loads and click "Check Panel Capacity" to see results.
This calculator uses National Electrical Code (NEC) Article 220.82 simplified load calculation method. A 65% demand factor is applied to connected loads beyond the base house load, reflecting that not all appliances run simultaneously.
A headroom of at least 20A is recommended to account for future additions and safety margins. Cost estimates are based on national averages and may vary significantly by location.
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