What Happens to Your Electric Bill After Going Solar?

Most solar homes remain connected to the utility grid. That connection provides electricity at night, on cloudy days, and any time your system produces less than your home is using. Even a well-sized solar system rarely eliminates every charge on your bill — it reduces the largest one: the cost of buying electricity.

Think of your bill after solar as a mix of what you produced, what you consumed from the grid, credits for any excess, and the fixed charges your utility applies regardless of usage. For context on the pre-solar side of that comparison, see why Florida electric bills keep rising.

Net metering is the policy that tracks the difference between the electricity your solar system sends to the grid and the electricity you draw from it. When your system produces more than your home is using, the excess flows back to the grid and typically appears as a credit on your bill.

When your system produces less — at night or on very cloudy days — you draw from the grid and pay for that usage, offset by any credits you've built up. The exact rules for how credits are earned, valued, and rolled over vary by utility and can change over time.

For Florida’s investor-owned utilities, interconnection and net metering for customer-owned renewable generation are governed by Florida Administrative Code Rule 25-6.065², and the Florida Public Service Commission publishes consumer information on customer-owned renewable generation.³

How unused credits are handled — whether they carry forward month to month, how long they carry, and how any remaining balance is treated at the end of a period — is set by the applicable rules and by your utility’s approved tariff. It is not the same everywhere, and it can change. Because this detail directly affects the value your system produces year after year, confirm the current terms with your own utility and with the Florida Public Service Commission rather than relying on a general description or on an installer’s summary.^2,3

Most utilities apply a fixed customer or connection charge every month simply for being connected to the grid. Some also apply a minimum monthly charge, which sets a floor on your bill regardless of how much (or little) electricity you consumed. These charges are usually small compared to a pre-solar bill — but they are the reason your bill rarely reaches zero.

The Federal Trade Commission makes the same point in its consumer guidance: unless a home is entirely off the grid, you will still get a utility bill, and utilities can charge fees to remain connected to the grid.¹

Solar production isn't identical every month. Longer, sunnier summer days typically produce more energy than shorter winter days. In many Florida homes, summer cooling loads also rise at the same time production peaks, and winter loads are lower. The result is that any single monthly bill is a snapshot — your annual production and consumption are the more meaningful comparison.

Solar reduces the cost of the electricity you would have bought from the utility. It does not remove your utility relationship, cancel fixed fees, or exempt you from every future rate change. Understanding those boundaries up front prevents disappointment later.