Understanding your bill
Why is my electric bill so high?
A bill that's higher than usual is stressful. Most of the time there's an explanation you can find on the bill itself. Here's how to work through it, step by step.
The short answer
Higher electric bills usually come from one or more of these: using more power (often from heating or cooling), a rate increase or a different rate plan, a longer billing period, an appliance using more than expected, or a corrected or estimated bill. Comparing your current bill with past bills is the fastest way to see which one applies.
Who this is for
California households, renters and homeowners, who got an electric bill that looks higher than expected and want to understand why before calling their utility.
1. You may have used more electricity
Your bill shows your usage, usually in kilowatt-hours (kWh). If that number went up, your bill likely went up with it. Look for the usage total and, if your bill includes one, the usage history chart.
Changes at home add up: more people at home, a new appliance, working from home, a guest staying over, or charging an electric vehicle.
2. Heating and cooling seasons
Air conditioning in summer and electric heating in winter are often the biggest drivers of usage. A heat wave or cold snap can raise a bill even if nothing else changed. Compare with the same month last year, not just last month.
3. Rates or your rate plan changed
Electricity prices are set through your utility and approved by regulators, and they can change during the year. Your bill should show the rate plan you're on.
On a time-of-use plan, the price depends on when you use power. Running large appliances during higher-priced hours can raise a bill without any change in total usage. Some plans also use tiers, where usage above a certain amount costs more.
4. The billing period was longer
Not every bill covers the same number of days. A bill for 33 days will usually be higher than one for 28 days, even with the same daily use. Check the service dates and the number of days on the bill.
5. Appliances and equipment
Heating and cooling
Older or poorly maintained systems, dirty filters and thermostat settings.
Water heating
Electric water heaters and pool or spa pumps can use a lot of power.
Always-on devices
Second refrigerators, freezers in the garage, and electronics left on.
New equipment
An EV charger, space heater or new appliance can change usage noticeably.
6. Estimated or corrected bills
Sometimes a meter can't be read and a bill is estimated. When the actual reading comes in, the next bill may be adjusted up or down. A bill may also include a correction for an earlier period. Look for words like "estimated", "adjustment" or "rebill" on your statement, and ask your utility if you're unsure.
7. If you have solar
Solar billing works differently from a standard bill, and California has more than one solar billing plan depending on when a system was connected. Depending on your plan, some charges may be settled on a longer cycle, such as an annual statement, which can be larger than a normal monthly bill. Less sun, more usage or a system issue can also affect what you owe. Your utility and your solar provider can explain the specific plan you're on.
How to compare this bill with past bills
Put this bill next to the same month last year and the previous month.
Compare total usage (kWh), the number of days, and the rate plan name.
Divide usage by days to get average daily use — this removes billing-period differences.
Check the line items for new charges, adjustments or credits that changed.
Note anything at home that changed: people, appliances, weather, schedule.
When something may deserve a closer look
Contact your utility if usage jumped with no change at home, the bill says it was estimated, you see charges you don't recognize, the account or meter number looks wrong, or the bill is much higher and you can't find a reason. A higher bill doesn't always mean there's an error, but it's reasonable to ask.
If the bill is hard to afford, there may be help available.
My Wattie · Coming Soon
A plain-language helper for your bill.
My Wattie is our upcoming AI-powered utility companion. It's being designed to read your bill and explain the charges, usage and changes in simple language — so questions like "why is this bill higher?" are easier to answer. It isn't available yet.
Meet My Wattie and join early accessCommon questions
Why did my electric bill double?
Common reasons include much higher heating or cooling use, a longer billing period, a rate or plan change, an estimated bill being corrected, or an annual solar billing statement. Compare usage, days and rate plan with previous bills, then ask your utility if you still can't find a reason.
Can my utility bill be wrong?
Errors can happen, such as a misread meter or an estimate that was later corrected, but most higher bills have another explanation. If something doesn't add up, contact your utility and ask them to review it.
Does Utility Bill Advocates work for my utility?
No. Utility Bill Advocates is an independent consumer resource. We are not a utility company or government agency.
Official sources to verify
Program rules, amounts and deadlines can change. Always confirm current details with the official program or your utility.
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