At the OUC Orlando residential rates in effect since October 1, 2025, the service, non-fuel, and fuel components calculate to $76.25 at 500 kWh, $134.00 at 1,000 kWh, and $204.25 at 1,500 kWh.
Those figures are not complete bills. They exclude taxes, water, wastewater, other-agency charges, account balances, credits, fees, and any different rate plan or service class.
Key Findings
- The fixed residential electric service charge contributes $18.50 to each example.
- At 1,000 kWh, the calculated electric-rate components equal $134.00 before excluded items.
- The first 500-kWh increase adds $57.75; the next 500-kWh increase adds $70.25.
- The $12.50 difference between those equal increments comes entirely from the 2.5-cent higher non-fuel rate above 1,000 kWh.
The current inputs
OUC’s Orlando rate sheet publishes these residential inputs:
| Component | Current Orlando residential rate |
|---|---|
| Electric service charge | $18.50 per month |
| Non-fuel base, 0–1,000 kWh | 6.783 cents/kWh |
| Non-fuel base, above 1,000 kWh | 9.283 cents/kWh |
| Fuel charge, all modeled kWh | 4.767 cents/kWh |
The current service-rates page identifies October 1, 2025 as the effective date and links the Orlando schedule separately from the St. Cloud schedule.
We converted cents to dollars by dividing by 100. Each calculation applies the lower non-fuel rate to the first 1,000 kWh, the upper non-fuel rate only to usage above 1,000, and the fuel rate to every modeled kWh.
Three reproducible calculations
| Usage | Fixed service | Non-fuel calculation | Fuel calculation | Calculated components |
|---|---|---|---|---|
| 500 kWh | $18.50 | 500 × $0.06783 = $33.915 | 500 × $0.04767 = $23.835 | $76.25 |
| 1,000 kWh | $18.50 | 1,000 × $0.06783 = $67.83 | 1,000 × $0.04767 = $47.67 | $134.00 |
| 1,500 kWh | $18.50 | $67.83 + (500 × $0.09283) = $114.245 | 1,500 × $0.04767 = $71.505 | $204.25 |
Totals are rounded to the nearest cent after using the published rates.
500 kWh
$18.50 + (500 × $0.06783) + (500 × $0.04767) = $76.25
The two usage components contain half-cent results before they are combined. We retained the full published rates and rounded the total rather than rounding each rate.
1,000 kWh
$18.50 + (1,000 × $0.06783) + (1,000 × $0.04767) = $134.00
This example reaches the end of the lower non-fuel tier. It does not apply the upper rate to all 1,000 kWh.
1,500 kWh
$18.50 + (1,000 × $0.06783) + (500 × $0.09283) + (1,500 × $0.04767) = $204.25
Only the final 500 kWh receives the upper non-fuel rate.
Why the second 500 kWh costs more in this model
Subtract the modeled totals:
- from 500 to 1,000 kWh:
$134.00 − $76.25 = $57.75; - from 1,000 to 1,500 kWh:
$204.25 − $134.00 = $70.25; and - difference between increments:
$70.25 − $57.75 = $12.50.
Fuel costs the same 4.767 cents per kWh in both increments. The fixed charge does not repeat within one modeled billing period. The entire $12.50 difference is:
500 × ($0.09283 − $0.06783) = $12.50
That is a tier calculation, not evidence that a particular household used more energy or that its total bill rose by that amount.
What these figures exclude
OUC’s bill guide separates electric service, fuel and non-fuel charges from other fields that can appear on an account. We excluded:
- gross-receipts, municipal, sales, or discretionary taxes;
- water and City wastewater charges;
- other-agency charges;
- solar or other credits;
- deposits, initiation, reconnection, testing, late, or other fees;
- past balances and payments;
- billing-period differences; and
- any time-differentiated, commercial, St. Cloud, or future rate.
The OUC tariff describes multiple tax categories and rate schedules. Applying those categories requires facts about the actual service address and account. A single regional percentage would be misleading, so no tax was inferred.
How to reproduce the result for another usage level
For usage at or below 1,000 kWh:
$18.50 + (kWh × $0.06783) + (kWh × $0.04767)
For usage above 1,000 kWh under this schedule:
$18.50 + (1,000 × $0.06783) + ((kWh − 1,000) × $0.09283) + (kWh × $0.04767)
Before using either expression later, verify that OUC still identifies the same schedule and effective date for the address and service class.
Methodology and limitations
Local Service Ledger collected the current OUC Orlando rate sheet, service-rates page, bill guide, and tariff on August 9, 2026. We calculated three usage levels, two equal-usage increments, and the tier difference, retaining published precision until each final display.
We did not access an account, sample bills, calculate an average, determine taxes, or predict consumption. “Month” in the fixed-charge label is taken from the published schedule; the examples do not assert a particular meter-reading period.