Home Energy Cost Tools & Calculators

Energy Bill Lab provides transparent calculators to help U.S. households understand utility charges, usage spikes, climate control costs, and major appliance energy consumption. All tools run locally in your browser with transparent formulas.

Whole-Home Diagnostics & Rate Benchmarks

Whole-Home Energy Scorecard

Comprehensive virtual home energy audit delivering a thermal efficiency letter grade (A+ to F), energy waste estimate, and prioritized retrofit ROI roadmap.

Bill Spike Detective & Diagnostic Tool

Forensic diagnostic triage to isolate whether your spike was caused by weather, equipment cycling, or rate hikes.

Electricity Bill Analyzer

Analyze bill spikes, normalize billing cycle length, and calculate your all-in cost per kWh.

State-to-State Rate Comparator

Compare residential electricity and gas rates, typical bills, and appliance operating costs across any 2 states.

General Energy Calculations

Appliance Energy Cost Calculator

Estimate electricity usage and operating cost for any custom household appliance or device.

Heating, Cooling & Environmental Control

Heating Fuel & Heat Pump Breakeven Comparator

Benchmark delivered heating cost per MMBtu across Gas, Heat Pumps, Oil, Propane, and Resistance.

Air Conditioner Cost Calculator

Calculate AC electricity usage using cooling capacity (BTU/hr), EER efficiency, and duty cycles.

Space Heater Cost Calculator

Estimate electric space heater operating costs based on wattage, quantity, and thermostat runtime.

Dehumidifier Cost Calculator

Calculate basement and room dehumidifier operating costs using compressor wattage and duty cycle.

Electric Mobility & Vehicles

EV Home Charging Cost Calculator

Calculate EV charging session cost, grid charging losses, and cost per mile based on battery kWh.

AppliancesAppliance power consumption data, typical wattage benchmarks, and operating cost guides.
GuidesPractical guides for diagnosing high electric bills, seasonal spikes, and utility statement charges.
Electricity RatesResidential electricity rate benchmarks and U.S. state averages with EIA source attribution.
MethodologyTransparent formulas, calculation assumptions, and estimate limitations at Energy Bill Lab.
Data SourcesOfficial U.S. EIA datasets, utility benchmarks, and state energy data sources used by Energy Bill Lab.