Real case in Tampa: the TECO bill settled at $13.67

Claudia V. lives in Tampa and her utility is TECO (Tampa Electric). With her solar system running, her bill comes in at $13.67. That number is not an error or a promotional rate: it is the minimum charge TECO bills for keeping the house connected to the grid. Here is what that charge is, why it exists, and why a solar home’s bill never reaches zero.

What is the utility’s minimum charge?

It is a fixed charge you pay every billing cycle simply for being connected, whether you use a lot, a little, or nothing.

TECO explains it on its own site: the daily customer charge covers the cost of providing and maintaining the meter and the service drop (the line that reaches your house), plus account services like meter reading, records and billing. Every customer pays it for each day of the billing cycle, including days with no electricity use at all.

With solar, that charge stays. What drops is the variable part: the kWh (kilowatt-hours, the unit energy is measured in) you buy from the grid. When your panels cover your usage, the variable part approaches zero and what remains is the fixed charge. In Claudia’s case, that is $13.67.

What does it look like on a solar home’s bill?

TECO publishes a sample bill for net metering customers. The logic is this:

Net metering is the mechanism that makes the offset possible: each month you pay only the net difference between what you used and what you produced, plus the basic service charge. TECO describes it that way on its solar connection page: you are billed for net energy usage plus a basic charge that covers the cost of serving your location.

If you want to see the case where accumulated credit exceeds usage and the bill comes in negative, read the real case in Hialeah with FPL.

Why do we say “minimum bill” and not “zero bill”?

Because a zero bill does not exist while you are connected to the grid, and promising one is misleading.

A salesperson who says “you will pay zero” is leaving out the fixed charge. At E-Minded we design the system so the variable part of your bill disappears, and we back it with the Minimum Bill Guarantee: if the system produces less than promised in any month, we pay the difference you overpaid to your utility. What we cannot remove, and nobody can, is the charge for being connected.

Heads up: the minimum charge can change. Utilities adjust their rates with approval from the Florida Public Service Commission. What Claudia pays today is not a lifetime figure. What stays stable is the logic: you pay for the connection, not for energy you no longer buy.

When is chasing the minimum bill NOT worth it?

When your bill is already low, because the savings margin is small and the system takes longer to pay for itself.

• Low bill. If you pay little today, what you can save is the gap between your bill and the minimum charge. Sometimes that does not justify a system.
• Shaded or poorly oriented roof. The system does not fully cover usage and you end up halfway: fixed charge plus a variable portion.
• Municipal utility or co-op. Credit rules are not the same as TECO, FPL or Duke. Each case has to be checked.
• Rate plans you would give up. TECO states that net metering is not compatible with its Energy Planner program; with a net meter you move to the standard residential rate. If you save with that plan today, add it to the math.

What to check before deciding

• Find the service charge or basic charge line on your bill. That is your floor: the bill will not go below it.
• Subtract that charge from your average bill. The difference is the real maximum savings solar can give you.
• Ask whether you are on a special rate plan that you would lose by switching to net metering.
• Ask for estimated production month by month and compare it to your usage in kWh, not just the dollar amount.
• If you want to know what your minimum bill would be in your specific home, a diagnosis calculates it from your real bills.

For the charge in detail, read the guide utility minimum charge explained.