Electric Bill Increase Analyzer
Compare two billing periods and estimate whether your electric bill increased because of greater usage, higher electricity rates, or increased fixed charges.
Previous Electric Bill
Current Electric Bill
Use the total kWh and electricity rate shown on each bill. Include monthly service charges, delivery fees, and other fixed amounts when they can be identified separately.
Electric Bill Comparison
What Caused the Change?
This tool creates an estimate from the values entered. Taxes, tiered rates, time-of-use pricing, fuel adjustments, credits, late fees, and estimated meter readings may cause the actual bill to differ.
Why Did My Electric Bill Increase?
An electric bill can rise because the household used more electricity, the utility charged more per kWh, fixed fees increased, or several of those changes occurred together. Comparing only the total dollar amounts does not show which factor was responsible.
Heating, air conditioning, electric water heaters, clothes dryers, dehumidifiers, pool equipment, hot tubs, well pumps, sump pumps, and appliances operating continuously can create noticeable changes in monthly electricity use.
How the Bill Increase Is Separated
The analyzer first estimates each bill by multiplying kWh usage by the corresponding electricity rate and then adding fixed charges. It separates the difference into usage, rate, and fixed-charge effects.
Usage Increase Versus Rate Increase
A usage increase means the household consumed more kWh. A rate increase means each kWh became more expensive. Your bill may increase even when usage remains unchanged if the utility rate or monthly fees rise.
Likewise, your electricity rate may remain unchanged while the bill rises because heating, cooling, or another major appliance operated longer than during the previous period.
How to Find the Electricity Rate
Look for a rate expressed in cents per kilowatt-hour on the utility bill. Some bills separate energy supply and delivery charges. If both charges vary with usage, add their rates together before entering the total.
When the bill does not clearly show a combined rate, subtract identifiable fixed fees from the total bill and divide the remaining cost by the total kWh used.
Electric Bill Increase Example
Suppose electricity use rises from 850 kWh to 1,200 kWh, while the rate increases from 14 cents to 17 cents per kWh. The bill increased partly because 350 additional kWh were consumed and partly because every current kWh cost more. This analyzer estimates the dollar impact of each change.
Unexpected or Unexplained Electricity Use
If usage rises sharply without an obvious reason, compare the billing dates, meter readings, weather, heating and cooling use, and recently added appliances. Equipment faults, water-heater problems, well pumps, auxiliary heat, or devices running continuously may increase consumption.
Contact the utility or a qualified electrician if the meter reading appears incorrect, electricity use changes suddenly, or you suspect an electrical problem. Do not open an energized electrical panel unless you are qualified to work safely.