EV Home Charging & Upgrade ROI Analyzer
Level 2 Recommended

Level 1 (120V) vs. Level 2 (240V) Charging Feasibility

Compare physical charge times, onboard computer thermal vampire load, monthly electricity bills, and break-even recovery on a $1,000 Level 2 garage installation.

Operating Parameters Real-Time Physics
45 miles
10 mi 45 mi 100 mi 150 mi
75 kWh
40 kWh 75 kWh (Model Y / Ioniq) 110 kWh
$0.16 / kWh
$0.05 $0.16 (US Avg) $0.40 (CA / NE)
0.30 kWh/mi
0.22 (Sedan) 0.30 (Compact SUV) 0.42 (Truck)
$1,000
$400 (DIY/Outlet) $1,000 (Standard) $2,500 (Panel Upgrade)
System Assessment
Level 2 Recommended for convenience and reduced power waste
Quora Electronics Insight: A standard wall plug delivers ~1,400W (120V @ 12A). High-power coolant pumps, battery management systems, and main relays continuously draw ~300W during charging. On Level 1, this overhead causes ~25% thermal waste. On Level 2 (9.6 kW+), the 300W overhead represents less than 3% of throughput.
Standard Wall Plug (120V / 12A)
9.64 hrs
Daily charge time needed
Power Output 1.4 kW (~4 mph)
Monthly Power Cost $72.00
Monthly Standby Waste 112.5 kWh
Overnight 8hr Recovery 32 miles (Deficit)
Hardwired Wall Unit (240V / 40A)
1.32 hrs
Daily charge time needed
Power Output 10.2 kW (~34 mph)
Monthly Power Cost $61.20
Monthly Standby Waste 18.0 kWh
Overnight 8hr Recovery 250+ miles (100% Full)
12-Hour Overnight Battery Recovery Simulation Starting at 15% SoC
Upgrade Economics & Break-Even Analysis Efficiency & Convenience
Monthly Energy Savings
$10.80
Annual Efficiency Savings
$129.60
Hours Reclaimed / Mo
249.6 hrs
Efficiency Break-Even
7.7 yrs
Enjoy this tool? Build your own with Super