Why did my electric bill double when my usage stayed the same?

If your kWh barely changed but the amount you owe doubled, the bill is usually counting something other than this month's electricity: a past balance carried forward, water or sewer on a combined bill, a deposit or late fee, a budget-billing adjustment, or simply more days. Price changes matter too, but to double a bill through price alone, the price per kWh would have to roughly double. Start by comparing the right lines, not the totals.

Compare kWh and days first, not dollars

Find the kWh used and the service dates on both bills. Divide kWh by days to get kWh per day. If kWh per day is close on both bills, your household's use really did stay similar, and the extra money is coming from somewhere else on the bill. If the later bill covers more days, it will show more kWh even at the same daily use (see how billing days affect your bill).

Then separate "amount due" from this period's electric charges

The amount due can include several things that aren't this period's electricity:

• A previous balance. Anything unpaid from the last bill is carried forward and added to the amount due.
• Other services. JEA's bill, for example, has separate sections for electric, sewer, water and irrigation service, each with its own taxes and fees. Only the electric section belongs in an electricity comparison.
• Late fees and deposits. These are account charges, not energy costs.
• Budget billing. FPL describes its budget billing as a rolling 12-month average with a deferred balance, and notes that it does not reduce your total energy costs. When the average is recalculated, or when you leave the plan, the amount you pay can change sharply even though your usage didn't.

Also check whether either bill says the meter reading was estimated. If an estimate was low, the next actual reading picks up the electricity that wasn't billed before, so one bill looks unusually high.

Then check the price lines

Per-kWh prices do change. JEA sets its fuel rate monthly: $43.26 per 1,000 kWh in October 2026 and $49.75 in November, so the same 1,000 kWh carried $6.49 more in fuel charges. FPL's September 2026 rate sheet included a storm restoration recovery refund of 0.797¢ per kWh that is gone from its October sheet; on 1,000 kWh that adds $7.97 before taxes. Changes like these are real, but each of these two moves a 1,000 kWh bill by under $10, nowhere near double.

Tiered rates can add a little more. FPL and JEA both charge more per kWh above 1,000 kWh in a billing period, so a small rise in use that crosses 1,000 kWh costs more per kWh than the same rise below it.

Where to look on an FPL bill and on a JEA bill

• FPL: compare the base charge ($10.52 on the October 2026 rate), the base energy and fuel charges (both priced higher above 1,000 kWh), the per-kWh clause charges (storm protection, environmental, conservation and capacity), the transition credit, and the gross receipts tax and regulatory assessment fee. Then look below them for local taxes and anything that isn't this period's electricity.
• JEA: use only the Electric section. Compare the basic monthly charge ($21.00), the energy charge (higher above 1,000 kWh) and the fuel charge, which JEA resets monthly. Leave the Sewer, Water and Irrigation sections out; each has its own taxes and fees.

When to call the utility

If kWh per day jumped and nothing changed at home, the utility can answer questions a bill can't:

• Was either meter reading estimated rather than actual?
• What does your usage history show? JEA's bill includes 13 months of consumption, and FPL's Energy Manager shows when and how your home uses energy.
• What is any line you don't recognize, and which period does it cover?
• If you're on a billing plan that averages payments, how was this month's amount calculated?

Keep both bills and note who you spoke to and what they said. If the utility agrees something was wrong, ask how and when the correction will show up, then check the next bill for it using the same per-day comparison.

Run your own two bills

The bill comparison tool does this split for your bills. Enter this period's electric charges (not the amount due), kWh and days for each. If your bills itemize per-kWh charges, add those too; without them, the tool shows price and fixed charges together and says so. It also flags tiered, time-of-use, demand and solar bills, where a one-price split is only approximate.

If the comparison shows that usage really did jump, the bill check gives you a plan, starting with free steps. If you can't find which line changed, the guide to reading an electric bill walks through each one.