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Electrical

VFD Energy Savings Calculator

July 27, 2026 by Sam Gorman

Estimate VFD kWh savings, energy bill savings, and simple payback from a 3 to 6 point speed and hours duty cycle.

Categories Electrical

Power Factor Correction Calculator

July 27, 2026 by Sam Gorman

Size a capacitor bank in kVAR and uF for single-phase or balanced three-phase power factor correction.

Categories Electrical

Battery Peak Shaving Savings Calculator

September 13, 2026July 27, 2026 by Sam Gorman

Estimate demand-charge savings from a battery and check if power or usable energy limits your planned peak cut.

Categories Electrical

Commercial Electricity Demand Charge Calculator

July 26, 2026 by Sam Gorman

Estimate a commercial demand charge from peak kW and a $ per kW rate, with optional minimum demand and ratchet checks.

Categories Electrical

EV Charger Load vs Panel Upgrade Calculator

July 26, 2026 by Sam Gorman

Compare load management, a smaller EV charger setting, and the panel size needed for your wanted Level 2 charger.

Categories Electrical

Electrical Panel Upgrade Cost Calculator

July 26, 2026 by Sam Gorman

Estimate a home electrical panel upgrade cost range with service entrance, meter work, circuits, permits, and labor level.

Categories Electrical

EV Fleet Charging Cost Calculator

July 26, 2026 by Sam Gorman

Estimate EV fleet charging cost, cost per mile, yearly cost, grid energy, and charging-window fit from your own inputs.

Categories Electrical

Vehicle-to-Home Backup Runtime Calculator

September 13, 2026July 26, 2026 by Sam Gorman

Estimate EV home backup runtime from battery size, charge, driving reserve, home load, V2H limit, and efficiency.

Categories Electrical

Level 1 vs Level 2 EV Charging Calculator

September 14, 2026July 26, 2026 by Sam Gorman

Compare Level 1 and Level 2 EV charging time, wall energy, regular cost, and optional cheap-rate session cost.

Categories Electrical

EV Time-of-Use Charging Savings Calculator

July 26, 2026 by Sam Gorman

Compare flat and TOU EV charging costs, including optional monthly fees and the off-peak share needed to save money.

Categories Electrical
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Advertiser disclosure: LumenCalculator.com is an independent, advertising-supported calculator site. Display ads may be served by partners such as Google. We may earn revenue from ads. Advertising does not influence calculator outputs.

About these calculators: Tools provide educational estimates based on formulas and common assumptions. Results are illustrative and may not match real-world components, tolerances, and environmental conditions. Verify against datasheets, standards, and professional guidance where relevant.

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