If your electric bill is negative, the utility owes you money rather than the other way around. That minus sign or parenthetical figure on your statement is a credit balance, and it almost always comes from one of a handful of sources: excess solar generation sent back to the grid, a correction after the utility had been estimating your usage, a rebate or demand response payment, or a plain overpayment or returned security deposit. The credit sits on your account and reduces your next bill automatically. You can also ask for it back in cash.
Which explanation fits depends on what’s been happening with your account lately. Work through the likely causes below in order.
Solar Export Credits
If you have rooftop solar, this is almost certainly the answer. Panels routinely produce more electricity at midday than a household uses, and the surplus flows backward through a bidirectional meter onto the grid. More than 30 states plus Washington, D.C. require utilities to credit your account for that exported power. Under traditional net metering, every exported kilowatt-hour is credited at the full retail rate, the same rate you pay for the power you pull in. During long summer days, exports can easily exceed consumption and drive the monthly balance negative.
A growing number of states have moved from traditional net metering to “net billing,” which pays a lower wholesale or avoided-cost rate for exports rather than the retail rate. If your utility has made that switch, your export credits are smaller, and a negative balance is harder to reach unless the system substantially overproduces. Your statement should show export credits as a separate line item, and comparing that credit rate to your consumption rate tells you which system you’re on.
Community Solar Works the Same Way
You don’t need panels on your roof to see solar credits. Community solar programs let you subscribe to a share of a larger off-site installation, and your portion of its output appears on your utility bill through virtual net metering. Own 20 percent of the array, get credited for 20 percent of what it produces. In high-output months those credits can exceed your usage. Expect two bills in this arrangement: one from the community solar provider for the subscription, and your regular utility bill reflecting the credits.
The Utility Corrected an Estimated Bill
When a utility can’t read your meter, because of access problems, a broken transmitter, or a smart meter that isn’t communicating, it estimates your usage from historical patterns. Estimates can run high, especially if you’ve been traveling, replaced old appliances, or simply used less than the model expected. Once an actual reading comes in, the utility reconciles the account, and several months of inflated estimates can produce a sizable corrective credit that carries forward for multiple billing cycles.
Statements usually mark estimated reads. If you see that marker and suspect you’ve been overcharged, request a manual read rather than waiting for the utility to catch up on its own.
A Rebate, Demand Response Payment, or Program Credit Posted
Some negative balances come from credits the utility applies directly to your account:
- Energy conservation rebates for installing qualifying equipment like a high-efficiency heat pump or added insulation. These are utility rebates, separate from the federal Energy Efficient Home Improvement Credit, which reduces your tax liability on your IRS return rather than showing up on your electric bill.1Internal Revenue Service. Energy Efficient Home Improvement Credit
- Demand response payments for letting the utility remotely adjust your thermostat or water heater during peak events. Programs commonly pay a fixed annual credit of $25 to $100, or per-event amounts, often applied as a lump-sum line item.
- Climate or clean energy credits in states with carbon pricing or cap-and-trade programs, sometimes distributed to residential customers as flat-rate bill credits, typically twice a year.
When one of these lands in a mild-weather month with low usage, the balance can go negative on its own.
You Overpaid or Got Your Deposit Back
The most ordinary reason for a credit is paying too much: a duplicate online payment, a typo that added a digit, an autopay that ran after you’d already paid manually. The utility holds the surplus and applies it to the next bill.
Returned deposits are the other everyday source. Utilities often require a deposit from new customers or those with limited credit history and return it after a period of on-time payments. Some return deposits after 12 months, others after 24 or longer. The refund, often with a small amount of accrued interest, is usually applied to your bill as a credit rather than mailed as a check. On a low-usage account, a returned deposit of $150 or $200 can easily push you into the negative for a month or two.
Why the Total Might Still Not Be Zero
Even with a strongly negative energy balance, most utilities charge fees that credits are not allowed to offset:
- Customer service or connection fees, a flat monthly charge for maintaining your meter and grid connection.
- Minimum bill amounts, a floor on what you owe regardless of production.
- Non-bypassable charges for things like wildfire funds, public purpose programs, or delivery infrastructure, which net metering credits specifically cannot reduce.
These typically run from a few dollars to $25 or more per month. If your statement shows a negative energy line but a small positive amount due at the bottom, those fixed charges are almost certainly why.
What Happens to the Credit
A credit balance rolls forward automatically and reduces your next bill. For solar customers carrying summer credits into winter, that’s usually the point. Most utilities operate on a 12-month billing cycle for solar accounts, letting high-production months offset high-usage months, and then issue a “true-up” statement at the end of the cycle to settle up.
What happens to leftover credits at true-up varies. Some programs roll unused credits into the next year. Some reset the balance to zero and the surplus disappears. Others pay out the remainder, but at a net surplus compensation rate far lower than the retail rate you were earning all year. If your system is oversized and you’re banking large credits every summer, you may be getting pennies on the dollar at year-end. Check your utility’s true-up policy before treating those credits as money in the bank.
Getting Cash Instead of a Rolling Credit
If the credit is large and you’d rather have the cash, call the utility and request a refund by check or direct deposit. Some utilities set a minimum threshold, often $1 to $5, below which they won’t cut a refund and simply leave the credit on the account. Processing runs from a few business days to several weeks.
When you close an account, the utility reconciles final charges against any remaining credit and owes you the difference. If you move and forget about a small balance, the utility doesn’t keep it. After a dormancy period, unclaimed balances go to your state’s unclaimed property division, which you can search at any time.
If a utility refuses to issue a refund, applies credits incorrectly, or drags out settling your account, your recourse is your state’s public utility commission (in some states, public service commission). Try to resolve it with the utility first, then file. Keep records of calls, dates, representative names, and reference numbers; the commission will ask.
Are Utility Credits Taxable
Most credits on your electric bill are not taxable income. Federal law excludes from gross income the value of any subsidy a public utility provides for installing an energy conservation measure.2Office of the Law Revision Counsel. 26 U.S. Code 136 – Energy Conservation Subsidies Provided by Public Utilities The IRS has confirmed that rate reductions and nonrefundable credits received on a monthly electric bill from participating in a utility conservation program are not included in income.3Internal Revenue Service. Publication 525 (2025), Taxable and Nontaxable Income
Solar net metering credits generally work the same way in practice. Because net metering is an accounting offset rather than a sale of electricity, the credits reducing your bill are not treated as income. Year-end net surplus compensation, when a utility actually cuts a check for excess generation, is less settled. The IRS has addressed net metering only in the context of eligibility for energy tax credits, not whether surplus compensation is gross income.4Internal Revenue Service. General Questions Regarding Energy Efficient Home Improvement Credit and Residential Clean Energy Property Credit For most homeowners the amounts are immaterial; if your system is large and the year-end payment is substantial, flag it for your tax preparer.