Electric Cost Lab research
Comparable energy-cost data, with the math shown.
Our studies apply one transparent usage model across every state or appliance so readers can see what actually creates the difference.
Most Expensive States for Running Central Air Conditioning
The same 3.5 kW cooling system and runtime assumption produces very different bills depending on the state electricity price.
Explore the data Study 02Home EV Charging Cost by State
A driver covering 12,000 miles per year can pay substantially different home-charging costs depending on local electricity prices.
Explore the data Study 03Space Heater Electricity Cost by State
Resistance heaters have similar electrical efficiency, so price per kWh and runtime create most of the difference in operating cost.
Explore the data Study 04Residential Electricity Price Rankings by State
This table converts state average price data into a common 1,000 kWh bill comparison while keeping fixed fees separate.
Explore the data Study 05Annual Electricity Cost of Common Household Appliances
Power alone does not determine cost. This ranking combines each device’s starting wattage with a realistic runtime assumption.
Explore the data Study 06The Annual Cost of Always-On Home Devices
Small wattages become meaningful when they remain active for all 8,760 hours in a year.
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