Solar Customers: Why Your Electric Bill Isn't Zero (And How to Check It)

You installed solar panels expecting to eliminate your electric bill—but every month, a bill still arrives. What gives?

The short answer: even with solar, most homeowners remain connected to the grid and incur certain fixed charges. But understanding exactly what you should and shouldn't be paying is important, because solar billing is where we see some of the most common billing errors.

How Solar Billing Works

Most residential solar customers are on a net metering arrangement with their utility. Here's how it works:

During the day: Your panels produce electricity. You use what you need, and the excess flows back to the grid. Your meter literally runs backward (or registers a credit on a smart meter).

At night/cloudy days: Your panels produce little or nothing. You draw electricity from the grid like any other customer.

At the end of the month: The utility calculates your net usage—what you drew from the grid minus what you sent back.

If you drew more than you sent: You pay for the net kWh at your retail rate.

If you sent more than you drew: You receive a credit (how much varies significantly by utility and state).

Why You Still Get a Bill

Even if your solar system produces as much electricity as you use (or more), you'll typically still see charges for:

1. Customer/service charge

The flat monthly fee ($10-25) that covers being connected to the grid. You pay this regardless of usage.

2. Minimum bill charges

Some utilities have a minimum monthly bill for solar customers, ensuring they pay something toward grid maintenance.

3. Demand charges (in some areas)

A few utilities have implemented demand charges for solar customers, based on your peak draw from the grid.

4. Non-bypassable charges

Certain regulatory charges (like low-income assistance programs or nuclear decommissioning) may apply to all kWh drawn from the grid, regardless of net metering credits.

5. True-up payments

Some utilities do annual true-ups rather than monthly. You may receive credits all year and then a bill (or credit check) at the end.

Common Solar Billing Errors

Solar billing is more complex than standard billing, and errors happen frequently:

Credits not applied correctly: The utility may fail to credit all your exported kWh, or credit at the wrong rate.

Wrong rate plan: Solar customers are often on special rate plans. Being on the wrong plan can significantly affect your costs.

Meter reading issues: If your smart meter isn't recording export correctly, you may not receive proper credit.

Rate changes not implemented: When net metering policies change, some accounts aren't updated correctly.

Time-of-use misalignment: If you're on a TOU plan, credits and charges should reflect time-of-use pricing. Errors here are common.

How to Verify Your Solar Bill

Step 1: Check your production

Your solar system likely has monitoring (SolarEdge, Enphase, etc.) showing total kWh produced. Compare this to what your utility shows.

Step 2: Check your consumption

Your utility's website should show total kWh consumed from the grid. Compare this to your lifestyle—does it seem reasonable?

Step 3: Verify the credit rate

What rate are you credited for exported electricity? In some states, it's full retail rate. In others (including California under NEM 3.0), it's significantly less.

Step 4: Math check

Take your gross consumption, subtract your credits, and verify the math matches your bill.

California NEM 3.0: A Special Note

If you installed solar in California after April 2023, you're under NEM 3.0 rules, which significantly reduced export credit rates. Understanding your bill is more complex, and verifying you're credited at the correct (albeit lower) rates is important.

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Solar Bill Verification

Solar billing is one of the areas where we find the most errors at Utility Check. The combination of net metering, time-of-use rates, and various charges creates many opportunities for mistakes.

When you upload a solar bill, we verify:

Your export credits are correctly calculated
You're on the appropriate rate plan
Fixed charges match your utility's tariff
The math works

Learn more about how our verification process works.

Verify your solar bill → · View pricing

Solar Customers: Why Your Electric Bill Isn't Zero (And How to Check It)