RST-1
When does peak hit on Duke Energy Florida, LLC’s RST-1? Peak hits 5am–10am in Dec–Feb, 6pm–9pm in Mar–Nov — every day.
- peak17.29¢
- mid13.87¢
- off-peak10.32¢
What does RST-1 cost a year?
| Household | Uses | A month | Per year | Works out to |
|---|---|---|---|---|
| Apartment One or two people, no central air, no electric heat | 4,866 kWh | $72 | $860 | 17.7¢ / kWh |
| Family home Three or four people with central air conditioning | 9,453 kWh | $126 | $1,508 | 16.0¢ / kWh |
| Home with an EV Same house, plus an electric car charging overnight | 13,103 kWh | $160 | $1,921 | 14.7¢ / kWh |
Estimates, not quotes. We run three made-up but realistic households through this tariff hour by hour for a full year — including the way air conditioning loads the afternoon and an EV loads the small hours. Your own bill depends on when you actually use electricity, which is exactly the thing a per-kWh number hides.
What you actually pay
| Period | Rate | Applies when |
|---|---|---|
| peak | 17.29¢ | 5am–10am, 6pm–9pm, December–February; 6pm–9pm, March–November |
| mid | 13.87¢ | 9pm–5am, 10am–6pm, midnight–midnight, December–February; 6am–6pm, 9pm–midnight, 6am–midnight, March–November |
| off-peak | 10.32¢ | midnight–6am, March–November |
Plus a fixed charge of $14.27 per month.
Should you be on RST-1?
This is a time-of-use plan, which means the clock decides your bill as much as the meter does. At the worst hour you pay 17.3¢ a kWh; at the best hour, 10.3¢ — 1.7× apart for identical electricity.
That gap is worth real money only if you can move load into it. Every kilowatt-hour a day you shift from 6pm to midnight is about $25 a year. A dishwasher run is roughly 1.5 kWh; an EV commute charge is 8 to 12. If your day is fixed — you are home in the evening and the air conditioner runs when it runs — a plan like this costs you more, not less.
Before a single kilowatt-hour moves, this plan charges $171 a year in fixed fees. On the apartment above that is 20% of the whole bill; on the house with a car charging in it, 9%. Fixed charges are invisible in a cents-per-kWh comparison and they punish small users hardest — if you use very little electricity, the headline rate is the least important number on this page.
Expect the bill to move with the calendar. The same family home costs about $168 in July and $103 in February — a $65 spread driven by heating and cooling far more than by anything you chose. Budget against the July figure, not the average, and a summer bill stops being a surprise.
How it compares to Duke Energy Florida’s other plans
Measured against the other residential plans this utility files, a family home lands 3rd cheapest of 3. The cheapest option, RSL-1, would run about $63 a year less.
Against RS-1 Residential Service, which looks like the plan you land on by default, this one comes out $37 more per year (2%). We infer the default from the tariff structure rather than a flag in the data, so confirm it against your own bill before you switch.
Other Duke Energy Florida plans
Who can be on Duke Energy Florida’s RST-1?
Eligibility is not our judgement — it is written into the tariff Duke Energy Florida filed. This is what that document says:
At the option of residential customers otherwise eligible for service under Rate Schedule RS-1, provided that all of the electric load requirements on the customer�s premises are metered through one point of delivery.
Quoted from the filed tariff. Your utility decides eligibility, not us; check with them before you switch.
If this is new to you
- When is electricity cheapest? Off-peak hours explained
Overnight, usually. All weekend, often. The exact hours are in your tariff, not in a rule of thumb.
- Should you switch to a time-of-use electricity plan?
A wide peak-to-off-peak gap is a lever, not a saving. Levers need something to move.
- When should you charge an electric car at home?
The single biggest load most homes can move, and the easiest to automate.
- Why is my electric bill so high in summer?
Usually three causes at once, and only one of them is your air conditioner.
Where this comes from
- Effective
- 2025-01-01
the date this tariff took effect
- Covers
- delivery + supply
the ZIP-code service map lists this territory as bundled, so the utility sells delivery and supply together
- Enrollment
- open to new customers
Tariff document: https://www.duke-energy.com/-/media/pdfs/for-your-home/rates/rates-fl/pe-rates-rst-1.pdf?rev=a97ceaf05cc74bd3a7d569701f7659fb