South Carolina · State · serves 12 ZIP codes
South Carolina Public Service Authority rate plans
2 residential plans are currently open to new customers. Some charge different prices depending on the hour — which is where most of the savings hide.
A household using 1,000 kWh a month pays about $2,173 a year on RESIDENTIAL TIME-OF-USE RATE SCHEDULE RT-25, the only residential plan here — $1,207 at 500 kWh, $4,107 at 2,000 kWh.
What does South Carolina Public Service Authority's residential rate cost?
South Carolina Public Service Authority files a single residential tariff, so there is no plan to choose between — everyone served here is on the same terms. That makes this page short on comparison and long on one question instead: what does that tariff actually do to a bill?
Priced hour by hour across a full year, a small apartment on this tariff comes to about $803 and a three-bedroom house with central air to about $1,333 — an effective 16.5¢ and 14.1¢ per kilowatt-hour once the fixed charge is spread across everything used.
With one plan and no hourly pricing, the only lever left is using less. Moving laundry or car charging to the middle of the night changes nothing here, which is worth knowing before you rearrange your evenings for no reason.
Expect the bill to swing with the weather rather than with anything you decide: the same house costs around $147 in July and $89 in February. Budget against the higher figure and the summer bill stops being a surprise.
How South Carolina Public Service Authority compares across South Carolina
Run the same three-bedroom house with central air through its default plan at each of the 4 South Carolina utilities we cover, and South Carolina Public Service Authority comes in 3rd cheapest at about $1,762 a year; the state median is $1,667. The range runs from $1,292 at Berkeley Electric Coop to $1,794 at Dominion Energy South Carolina, and since the utility is set by the address, the part of that gap you can act on is the plan, not the company.
The other two households tell the same story in different sizes: a small apartment pays about $997 here against a state median of $985, and the same house with an electric car charging overnight about $2,184 against $2,081. Effective rate, fixed charge included, is 18.6¢ per kilowatt-hour for the family home.
Every South Carolina utility we cover, priced for the same three households →
When are South Carolina Public Service Authority’s peak hours?
South Carolina Public Service Authority’s peak hours are 3pm–6pm, April–October; 6am–9am, November–March. Everything outside those hours is off-peak.
At peak, RESIDENTIAL TIME-OF-USE RATE SCHEDULE RT-25 charges 37.4¢ a kWh; off-peak it is 11.6¢ — 3.2× apart. These hours only matter on a time-of-use plan — the default plan, RESIDENTIAL GENERAL SERVICE SCHEDULE RG-25, charges one rate at every hour.
On RESIDENTIAL TIME-OF-USE RATE SCHEDULE RT-25, every kilowatt-hour a day you move from 6am to midnight is worth about $94 a year in the month the gap is widest — an electric car or a water heater on a timer is the kind of load that actually moves. When to charge an electric car →
Which plan would cost you least?
No bill upload, no sign-up. Tell us roughly what a month costs you and what runs on electricity — we price every plan against the same household and show you the gap.
That adds up to 12,480 kWh a year. Compare it to the total on your bill and adjust until it’s close.
Same usage, different plan
$497a year
That is the gap between the cheapest plan you could be on — RESIDENTIAL GENERAL SERVICE SCHEDULE RG-25 — and the priciest. Not by using less power. By being billed differently for the same power.
| Plan | Per year | Vs best |
|---|---|---|
| RESIDENTIAL GENERAL SERVICE SCHEDULE RG-25One rate, every hour of the year. | $1,682 | — |
| RESIDENTIAL TIME-OF-USE RATE SCHEDULE RT-25Peak hits 6am–9am in Nov–Mar, 3pm–6pm in Apr–Oct — every day. | $2,179 | +$497 |
An estimate, not a quote. Supply charges move month to month, and your real usage pattern is not exactly this one. What it does show reliably is the gap between plans — both are priced off the same assumptions.
Before you switch anything
- What is a time-of-use electricity rate?
The same kilowatt-hour, priced differently depending on when you use it.
- 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.
- How to compare electricity plans without getting it wrong
Six things that break a comparison, and the order to check them in.
Every plan, in detail
Hour-by-hour schedules, tier thresholds, and the tariff each one comes from.