High Electric Bill Detective
Your electricity usage went up. Which changed loads could plausibly explain it? Compare the increase with appliances or equipment you used more.
Only the dollars went up? Start with the Electric Bill Increase Analyzer to separate usage, rates and billing-period changes.
3. What Does the Math Explain?
Estimated Suspect Cost: /month
The entered suspect assumptions estimate more usage than the bill increase. Check wattage, run time, duty factor, or whether some loads replaced other electricity use.
| Suspect | Estimated kWh/month | Share of Increase | Estimated Cost/month |
|---|
Bill Comparison Context
Total bills may include fixed charges, delivery, taxes and fees. These totals and entered rates are context, not a precise cost decomposition. Analyze the bill change in detail.
These modeled suspects could explain usage; they do not diagnose your home or prove equipment is malfunctioning.
Still Unexplained? Check Next
- Verify billing days and whether the bill marks meter readings actual or estimated.
- Compare seasonal heating/cooling, space heaters and electric water heating.
- Review pool/hot-tub schedules and electric vehicle charging.
- Measure suspicious plug-in loads with an energy meter; check equipment operating longer than expected.
How the estimates work
Watts ÷ 1,000 × hours/day × days/week × (52 ÷ 12) gives estimated monthly kWh. Multiply by duty factor ÷ 100 for cycling equipment. Measured kWh ÷ measured days × 30.4375 gives estimated monthly measured use.
For two bills, we subtract previous kWh/day from current kWh/day, then multiply by 30.4375. The raw bill-to-bill difference is also shown. No intermediate calculation is rounded.
Duty factors are your assumptions; measured energy avoids guessing them. Weekly schedules use 52 ÷ 12 weeks/month, while bill and measured-day comparisons use 365.25 ÷ 12 days/month.
Why Is My Electric Bill So High?
A high power bill can reflect longer billing periods, changed rates or more electricity use. Once you have confirmed a usage increase, this electricity detective compares it with changed appliance loads. It helps you decide what to measure next, rather than naming a cause from the bill alone.