Why Is My Electric Bill So High? The Four Real Causes

Most advice about high electric bills is a list of tips. That's backwards. First work out which of the four causes is actually yours — the fix is different for each, and three of the four are free.

Your bill went up. Before you start unplugging phone chargers, work out which of the four things actually changed — because the fix for each is completely different, and doing the wrong one wastes both money and effort.

The four causes

Every increase in an electricity bill traces back to one of these:

1. You used more energy. More kWh went through the meter.
2. You used it at worse times. Same kWh, but more of it during expensive hours.
3. You're on the wrong rate plan. Same usage, same timing, wrong pricing structure.
4. The rate itself went up. Nothing you did changed at all.

They feel identical on the bill. They're not remotely the same problem.

Sorting out which one you have

Pull up 12–24 months of usage on your utility's website. Nearly every utility shows this, and it's the single most useful screen they offer.

Compare kWh, not dollars. This is the step people skip. Dollars conflate all four causes; kilowatt-hours isolate the first one. If your kWh is flat but your bill climbed, you did not start using more electricity — something about the *pricing* changed, and no amount of turning off lights will fix it.

Compare against the same month last year, not last month. August is always worse than April. Comparing consecutive months mostly measures the weather.

Then read the result:

| What you see | What it means |

|---|---|

| kWh up, same season last year | Genuinely using more — new appliance, more people home, or something failing |

| kWh flat, bill up | A rate change or a plan change. Check the rate on the bill itself |

| kWh up only in summer | Cooling. Your envelope and your thermostat schedule are the levers |

| kWh up year-round, flat across seasons | Something is running constantly. Find it before buying anything |

Cause 1: you're actually using more

The honest version of this list, in rough order of how often it turns out to be the culprit:

• A second refrigerator or freezer, usually in the garage. A 20-year-old unit in a hot garage can draw 3–4× what a modern one does, and the garage heat makes it run nearly continuously in summer.
• A pool pump on the wrong schedule — often the single largest load in a home that has one.
• An EV that quietly added 250–350 kWh a month.
• A failing appliance. A refrigerator with a dying door seal or a fouled condenser coil doesn't stop working; it just runs constantly. Same for an AC low on refrigerant, which short-cycles and never quite reaches setpoint.
• A heat pump stuck in emergency/auxiliary heat, which is resistance heating and roughly triples the cost of the same warmth.

The clue that separates "new appliance" from "failing appliance" is the *shape* of the change. A new appliance shows up as a step: normal, normal, higher, higher. A failing one usually ramps.

Cause 2: your timing got worse

If you're on a time-of-use plan — and in California most residential customers now are — the same kilowatt-hour costs roughly twice as much at 6pm as at 10pm.

This is the cause people most often miss, because their total usage genuinely didn't change. What changed was that someone started working from home, or cooking earlier, or charging the car when they get in rather than overnight.

It's also the cheapest to fix. Moving laundry, the dishwasher, the pool pump, and EV charging outside the 4–9pm window costs nothing and changes nothing you'd notice. See what time-of-use rates actually cost you.

Cause 3: the wrong rate plan

Most people are on whatever plan they were assigned the day service started, and have never revisited it. Utilities do not proactively move you to a cheaper plan — they'll tell you honestly if you ask, but the asking is on you.

The right plan depends entirely on *when* you use power, not how much. A household that's empty all day and asleep by nine does well on time-of-use. A household with someone home all day running AC through the afternoon often does not. How to choose a rate plan covers the comparison properly.

Cause 4: the rate went up

Sometimes the answer really is "the rate went up" — and no household behavior change will undo that. California rates have risen substantially and repeatedly.

Worth knowing: if the rate is the cause, the honest options are a discount program you may qualify for, using less, or generating your own. Which brings us to the one thing this site won't do.

The one thing we won't tell you

If your usage is high and your rate is high, solar may genuinely be the right answer. We won't model that for you — sizing, roof condition, shading, and financing are a different job requiring different data, and a half-answer here would be worse than none.

What this site does is make sure you're not paying for solar to offset a bill that could have been 20% smaller for free. Fix the plan, fix the timing, find the always-on load — *then* price a system against what's left. CheckYourSolar does that part properly.

Start with your own data

Every judgment above needs your actual usage. A photo of one bill gets you partway; your utility's interval data gets you the whole picture — including the load running 24/7 that never shows up on a monthly total.

Run a free bill audit →

Frequently asked questions

Why did my electric bill double in one month?

A doubling in a single month is almost always either a seasonal cooling or heating spike, a billing period that covered more days than usual, an estimated read being corrected by a real one, or an appliance that started running continuously. Compare the kWh — not the dollars — against the same month last year to tell which.

Does unplugging things really lower my bill?

Marginally. Modern electronics in standby draw very little, and chasing them rarely shows up on a bill. What does show up is the always-on load with real draw behind it: an old second refrigerator, a pool or pond pump, an aquarium, or a heat pump in auxiliary mode. Find the big constant load rather than the small ones.

Should I call my utility about a high bill?

Yes, and ask two specific things: whether the read was actual or estimated, and how your last 12 months would price on every rate plan you qualify for. Both are questions they will answer accurately, and the second one is the single most valuable call you can make.