Free Electric Bill Calculator California

How Much Is an Electric Bill in California?

There is no honest single number. Two neighbors with identical homes can pay very different amounts because they sit in different utility territories, are on different rate plans, or buy generation from a Community Choice Aggregator (CCA) rather than the utility. What the calculator asks for reflects that: your provider, your kWh, and the rates and fixed charges printed on your bill.

Five things move a California bill the most. First, how many kWh you use. Second, the price per kWh, which can rise with usage (tiers) or with the hour of day (time-of-use). Third, fixed charges that show up whether or not you use much power. Fourth, whether delivery and supply are billed by the same company. Fifth, credits: CARE/FERA discounts, the California Climate Credit and solar credits. When the calculator gives you a monthly figure, it lists each of these as its own line so you can see which one is doing the work.

Where you don't have a bill in front of you, the calculator won't invent a rate. Instead, it can derive an all-in cost per kWh from your last total and kWh, which is often the most accurate shortcut available.

How to Calculate an Electric Bill in California

Take a 700 kWh month on a flat plan at $0.32 per kWh with a $0.35 daily service charge over 30 days and a $12 Climate Credit. Energy is 700 × $0.32 = $224.00. The service charge is 30 × $0.35 = $10.50. Subtract the $12 credit and the total is $222.50. Divide by 700 kWh and your effective cost is about $0.318 per kWh. (These figures are only a worked example, not a California rate.)

Tiered plans change the first line: the first block of kWh is priced at one rate, the next block at a higher one, and so on, so the energy charge is a sum of blocks. Time-of-use plans price each kWh by when it was used, so the energy charge is the sum of peak, mid-peak and off-peak kWh times their own rates. Enter the values in the calculator's advanced section and it does this arithmetic for you.

For a step-by-step version of the general method, see the guide on how to calculate an electricity bill.

What Is a kWh?

A kilowatt-hour is the unit your utility bills you in. It is the energy used by a 1,000-watt load running for one hour. A 100-watt bulb running for 10 hours uses 1 kWh. A 5 kW EV charger running for 2 hours uses 10 kWh.

Power (kW) and energy (kWh) are easy to confuse. kW is how hard something is working at a moment, like a car's speed. kWh is how much it has consumed over time, like the distance traveled. Your bill charges for distance. If the difference is still fuzzy, the walkthrough on how to calculate kW covers it with examples.

How California Electricity Rates Work

Utility and service territory

Investor-owned utilities (PG&E, SCE, SDG&E) and municipal or district utilities (LADWP, SMUD, Silicon Valley Power, Pasadena, Burbank, Glendale, Anaheim, Riverside, Roseville, Modesto and Turlock irrigation districts) each set their own tariffs. Moving a few miles across a boundary can change your rate structure.

Rate plan

Your plan determines how energy is priced. Common patterns are tiered pricing, time-of-use pricing, and EV-specific or whole-home time-of-use plans. The plan name is printed on your bill, often in a "Rate schedule" or "Rate plan" line, and it matters more than the utility name alone.

Delivery and generation

Delivery covers the wires, poles and meters. Generation (or supply) covers the power itself. On a bundled utility bill both come from one company. If you are served by a CCA, the utility still delivers the power and bills you for delivery, while the CCA charges generation, often on the same statement as a separate line. If a supply line on your bill carries a name other than your utility's, that's a hint you're with a CCA.

Fixed and other charges

A base or service charge, minimum bill provisions and various surcharges do not scale with kWh. That is why a low-usage month can still produce a bill that seems large.

Rate data and effective dates

Tariffs change several times a year. The calculator's rate table is built around utility, rate_plan, rate_version, effective_from, effective_to and source_date so old rates are kept, not overwritten. A "rates updated" date only appears when a verified plan record is loaded; otherwise the tool uses the rates you type in.

Why Is My California Electric Bill So High?

Work through it in this order, because each step points to a different fix.

1. Did kWh go up? Compare kWh on the two bills, not just dollars. A heat wave, a cold snap with electric heating, a guest, a new EV or a pool pump running too long can all raise usage. Also compare per-day usage if the billing periods differ.
2. Did the cost per kWh go up? Divide the total by kWh for both bills. If the effective rate rose while usage held steady, the cause is on the price side: a rate change, a tier or TOU shift, or a change in credits.
3. Did fixed charges change? Look at the base charge and "other charges" lines. A fixed-charge increase hits every customer regardless of usage.
4. Did a credit disappear? The Climate Credit or a solar credit that appeared last month and not this month will raise the total with no change in usage.
5. Did your plan or billing period change? A 35-day bill contains about 17% more days than a 30-day one.

The Bill Checker above automates these tests. If it tells you consumption is the main driver, the guide to reducing electricity usage at home is the natural next step.

Why Did My Electric Bill Go Up If My Usage Stayed the Same?

Suppose one bill shows 680 kWh and $214 and the next shows 692 kWh and $287. Usage rose 1.8%, but the bill rose 34%. Something other than consumption changed. These are the usual causes:

• Rate change. Energy rates can be adjusted during the year, and a CCA can change its generation rate on a different schedule than the utility.
• Tier or TOU effects. On a tiered plan, moving even part of your use into a higher block raises the average price. On TOU plans, shifting a few hours of use into the peak window can add cost with barely any change in total kWh.
• Fixed charges. A higher base charge raises every bill.
• Delivery or generation charges. Different lines can move in different directions, which is why the checker asks for them separately.
• Billing days. More days means more fixed charges and more kWh at the same daily habit.
• Credits. A missing Climate Credit, changed solar credit or an ended discount all show up as a higher total.
• Plan change. A move to a new plan by you or your utility can rewrite the rate structure entirely.

To find out which of these applies to you, put both bills into the Bill Checker. It compares effective cost per kWh, per-day usage and each charge line.

California Electricity Cost by Utility

The calculator's provider list is the starting point, and the plan names below are examples of what customers commonly see. Plan names and structures change, so always confirm against your own bill.

PG&E electric bill calculator

PG&E customers commonly see tiered and time-of-use residential plans as well as EV-oriented time-of-use plans. Enter the plan's per-kWh rates, or use delivery and supply lines if your bill splits them. If you are with a CCA, PG&E bills delivery and your CCA's generation appears alongside it. Check the "Rate schedule" line for the plan name.

SCE electric bill calculator

SCE residential plans include several time-of-use options and a tiered "Domestic" style plan. Peak windows differ by plan, so use the peak share slider from your own usage data. Many SCE-area cities are also served by CCAs, so answer the CCA question honestly.

SDG&E electric bill calculator

SDG&E customers are mostly on time-of-use plans, and San Diego Community Power now supplies generation to a large share of the region. If your bill mentions a CCA, choose "Yes" and enter the delivery and generation lines separately for the clearest breakdown.

LADWP electric bill calculator

LADWP is a municipal utility that bills delivery and generation together, and its residential rate structure has historically used usage tiers that can vary by season. Enter the tier sizes and rates on your bill in the tier section. LADWP customers are not served by a CCA.

SMUD electric bill calculator

SMUD is also a municipal utility with a time-of-day residential structure. Because SMUD's peak hours and rates are set by SMUD, use the values on your bill and the TOU inputs. Since SMUD is a single provider for both delivery and generation, keep the CCA option on "No".

The same approach works for Silicon Valley Power, Pasadena, Burbank, Glendale, Anaheim, Riverside, Roseville, Modesto and Turlock. Choose the provider, then enter the rates from your bill.

California Time-of-Use Electricity Rates

Time-of-use (TOU) means the price of a kWh depends on the hour. Late afternoon and early evening tend to be the most expensive because demand is high and solar output is fading. Overnight and midday can be cheaper, depending on the plan.

A quick illustration with made-up numbers: at a $0.50 peak rate and a $0.28 off-peak rate, moving 100 kWh from peak to off-peak in a month saves 100 × $0.22 = $22, with no change in total kWh. In the calculator, drag your peak share down and watch the estimate move. That's the effect of shifting laundry, dishwasher runs, pool pumps and EV charging out of the peak window. Some plans and locations have seasonal differences too, so don't assume last winter's pattern holds in August.

For a plain-language overview of the basics of trimming a monthly bill, see how to decrease your electricity bill.

California Electric Bill for an Apartment

Apartments generally use less electricity than houses, mainly because they are smaller, share walls and rarely have pools or large HVAC systems. But a smaller bill doesn't mean an easy one to decode. Some apartments have individual meters and you're billed directly by the utility. Others use submetering or a ratio-billing arrangement through the landlord, in which case the charges may not follow the utility's tariff exactly.

If you get an actual utility bill, use it in the calculator as-is. If you're comparing before a move, get last year's monthly kWh from the property manager or the current tenant, then apply the target utility's rates. For a broader look at the other costs of an apartment, see utilities for a 1-bedroom apartment. In a small unit, base charges take up a larger share of the total bill, so the effective cost per kWh is often higher than the rate would suggest.

California Electricity Cost for EV Owners

Turn on "I charge an EV at home" in the advanced section. The calculator estimates monthly EV kWh as miles ÷ miles-per-kWh × home-charging share. For 1,000 miles at 3.5 miles per kWh with 90% charged at home, that's about 257 kWh per month. Multiply by your marginal rate for the added cost, and it's shown as a with-EV and without-EV comparison.

On a time-of-use plan, when you charge matters as much as how much. A charger that starts at midnight and one that starts at 6 pm can produce different bills for the same miles. Some utilities also offer EV-specific plans; if you're on one, enter its rates. Include the EV in your monthly kWh so the comparison is accurate.

California Electricity Bill With Solar

With solar, three numbers matter: what you bought from the grid (imports), what you sent back (exports), and what you used directly from your panels. Your panels' production minus exports is what you consumed on-site. The utility bills you for imports, applies credits for exports under your solar billing arrangement, and still charges fixed and minimum amounts.

California solar customers are on different billing arrangements depending on when they interconnected, so the calculator does not assume one. Enter your imports as the kWh, and either a solar credit from your bill, or exports and a per-kWh credit that your utility has stated. A solar customer can still see a non-zero bill in a month with more exports than imports, because of fixed charges and other non-usage items.

California CARE and FERA Bill Assistance

CARE and FERA are utility-administered programs that reduce electric bills for eligible households. Which one applies, and the discount you receive, depends on the program's current income guidelines and your utility. The calculator doesn't decide eligibility. If you're enrolled, enter the discount percentage your bill shows and it will be applied to the estimated charges. If you aren't sure whether you qualify, your utility's website has the current requirements.

The California Climate Credit is a separate bill credit from your utility. Its amount and timing depend on the utility and the year, so it appears in its own line as a negative amount and is never folded into your electricity rate.

What Uses the Most Electricity at Home?

In most California homes the biggest loads are heating and cooling, water heating, EV charging, and clothes dryers. Electric ovens and cooktops, pool pumps, well pumps, and older refrigerators or second fridges also add up. Which ones dominate depends on your climate, your home's insulation, and whether you use gas or electricity for heat and hot water.

To size a specific appliance, open the Appliances tab. Enter its watts, daily hours and days per month, plus your rate. A 1,500-watt space heater running 6 hours a day for 30 days uses 1.5 × 6 × 30 = 270 kWh. Standing loads matter too, so a 150-watt device that never turns off uses about 108 kWh a month. If you're pricing a heat pump upgrade, the heat pump savings calculator picks up where this leaves off.

For a broader list of cheaper habits, the guide to saving money on electricity covers them. To convert any rate and usage into a monthly cost quickly, the energy cost calculator is a simple companion.

Frequently Asked Questions