Solar app looks normal but the bill is high? A St. Petersburg comparison worksheet

Use one period and one set of units

For a St. Petersburg home, start with the utility named on the actual bill. Save the statement’s start and end dates, billing-day count, imported energy and exported energy where supplied. Export the solar app’s production for that same interval. Use kWh throughout; a momentary kW reading cannot be compared directly with a monthly energy total.

Check whether an app chart is calendar-month data while the bill spans parts of two months. Note missing monitoring days, an estimated meter read or a recent account change. Those are reasons to qualify the comparison, not evidence by themselves of failed equipment.

Work through the energy balance

Here is an illustrative no-battery example with aligned readings: the array produced 900 kWh, 300 kWh went to the grid, and the home bought 700 kWh. Estimated solar used directly in the home is 900 minus 300, or 600 kWh. Estimated total household use is 600 plus 700, or 1,300 kWh.

This simplified arithmetic assumes complete, compatible measurements and no battery charging or discharge. Meter locations, measurement accuracy and system losses can affect a real reconciliation. It does not calculate the dollar bill. If storage is present, ask the installer for an energy-flow report rather than forcing the same equation onto a different configuration.

Keep the meter boundary separate from the rate

FPL explains that electricity used in the home before reaching its meter does not appear as total generation on the bill. [1] That source illustrates the measurement boundary; it is not a statement of the rate or credit rules for a Duke Energy or other utility account. Confirm those rules directly with the provider shown on your statement.

After reconciling kWh, list the actual charges, credits and previous balances from the bill. Compare household changes such as an EV, guests or different air-conditioning use. A higher dollar amount can call for a billing explanation even when production is consistent with the available system records.

Send a focused service request

Describe the discrepancy with dates and quantities: “The app shows this production for these dates, and the bill shows these import and export totals.” Include any alert text and whether the monitoring connection was interrupted. Share equipment documents and safe, ground-level photos when useful; there is no need to open electrical equipment to start a review.

Ask the service team what it can assess remotely, what would require a visit and what diagnostic charges apply. Origin can review the information before confirming accepted work. This record helps separate a utility-account question, monitoring-data question and potential equipment issue without promising a diagnosis from a screenshot.

Primary sources

1. FPL: Net Metering FAQs

   Checked October 5, 2026 for meter boundaries, existing-system account activation and annual settlement. FPL terms apply only to FPL accounts; examples below are not tariffs or production forecasts.

Planning examples and questions are Origin’s editorial guidance, not a property-specific diagnosis, engineering design, tax determination or promise of savings. Manufacturer and utility references do not imply an affiliation with Origin.

Related guidance

• Solar service and maintenance
• Understand the bill that remains after solar
• St. Petersburg project guidance