Idaho doesn't have an electricity marketplace to shop, and that's not a gap in the system — it's the system. One utility serves your address, the Idaho Public Utilities Commission approves what it can charge, and the "best plan" question that dominates deregulated states simply doesn't apply here. That sounds limiting, but it also means there's no fine print to decode, no holdover rate waiting to ambush you, and no gimmick plan engineered against your usage. Here's what actually sets your rate, what it costs in 2026, and the concrete moves a homeowner can make when the provider itself isn't one of them.
The straight answer: no, you can't choose
Idaho is a regulated electricity state. There is no residential provider choice, no comparison site, and no competing suppliers bidding for your account. A single utility — Idaho Power across most of the southern and western part of the state, Avista or Rocky Mountain Power in other territories, plus a handful of rural electric cooperatives elsewhere — holds the exclusive right to serve your area, and the Idaho Public Utilities Commission (IPUC) reviews and approves the rates it can charge. That's the entire arrangement: one utility, one PUC-approved rate, no shopping.
If you get a call, email, or door-knock offering to "switch your electricity provider" in Idaho, it's not a real option — treat it as a scam. This isn't Texas or Ohio, where deregulation created an actual market to navigate. In Idaho the honest homeowner question isn't "which provider is cheapest," it's "what can I actually control given the rate I'm stuck with" — and there's more to that answer than it first appears.
What power costs in Idaho
Idaho residential electricity averaged 11.8 cents per kWh in 2025 (EIA preliminary). The chart below shows the full federal price history for Idaho since 1990, with a dashed projection of where prices go if the last decade's pace simply continues.
Full Idaho electricity price data (1990–2025)
| Year | Idaho (¢/kWh) | US avg (¢/kWh) |
|---|---|---|
| 1990 | 4.9 | 7.8 |
| 1991 | 4.9 | 8.0 |
| 1992 | 4.9 | 8.2 |
| 1993 | 5.0 | 8.3 |
| 1994 | 5.1 | 8.4 |
| 1995 | 5.3 | 8.4 |
| 1996 | 5.3 | 8.4 |
| 1997 | 5.2 | 8.4 |
| 1998 | 5.3 | 8.3 |
| 1999 | 5.3 | 8.2 |
| 2000 | 5.4 | 8.2 |
| 2001 | 6.0 | 8.6 |
| 2002 | 6.6 | 8.4 |
| 2003 | 6.2 | 8.7 |
| 2004 | 6.1 | 9.0 |
| 2005 | 6.3 | 9.5 |
| 2006 | 6.2 | 10.4 |
| 2007 | 6.4 | 10.7 |
| 2008 | 7.0 | 11.3 |
| 2009 | 7.8 | 11.5 |
| 2010 | 8.0 | 11.5 |
| 2011 | 7.9 | 11.7 |
| 2012 | 8.7 | 11.9 |
| 2013 | 9.3 | 12.1 |
| 2014 | 9.7 | 12.5 |
| 2015 | 9.9 | 12.7 |
| 2016 | 10.0 | 12.6 |
| 2017 | 10.0 | 12.9 |
| 2018 | 10.2 | 12.9 |
| 2019 | 9.9 | 13.0 |
| 2020 | 10.0 | 13.2 |
| 2021 | 10.2 | 13.7 |
| 2022 | 10.4 | 15.0 |
| 2023 | 11.1 | 16.0 |
| 2024 | 11.5 | 16.5 |
| 2025 * | 11.8 | 17.3 |
Source: US EIA, average residential retail electricity price. Values in cents per kWh. * 2025 is preliminary.
Two things stand out in that trend. First, the rate has risen about 88 percent since 2005 — one of the steeper cumulative climbs among western states, even though Idaho's rate remains well below the national average today. Second, the last decade's pace has slowed to roughly 1.8 percent a year, meaningfully calmer than the run-up that preceded it. Put together, the honest read is a state that saw a real structural repricing in the 2000s and 2010s and has since settled into a gentler, more predictable climb — Idaho is still one of the cheapest states to keep the lights on, but "electricity used to be a lot cheaper here" is a fact, not a memory playing tricks.
Why your rate is set the way it is
In a regulated monopoly, your utility doesn't set its own price and hope you pay it — it files a rate case with the Idaho Public Utilities Commission, laying out its costs, and the commission decides what's a fair rate of return. Three things drive that number over time: the fuel mix used to generate power (Idaho leans heavily on hydropower, which is cheap in a normal water year but exposes rates to drought and low-snowpack years when utilities have to buy or generate more expensive replacement power), ongoing grid maintenance and infrastructure investment (poles, wires, substations, and wildfire hardening), and periodic rate cases where the utility asks to recover rising costs and the commission negotiates the increase down, approves it, or occasionally rejects parts of it.
This is also why your rate doesn't behave like a stock price. There's no daily fluctuation, no surge pricing, and no plan you might have missed — the number moves only when the utility files and the commission rules, which happens on a multi-year cycle. The tradeoff for giving up choice is that stability: your rate is boring by design, and boring is often underrated.
How to actually lower your bill
Since the rate itself isn't negotiable, the lever that's actually yours is usage — and a few billing options your utility may offer without advertising loudly.
Efficiency first. Attic and duct insulation, sealing air leaks around windows and doors, and an HVAC tune-up (or upgrade, if your system is old) do more for a bill than anything else on this list, because Idaho's mix of hot, dry summers and cold winters means heating and cooling dominate most residential usage — especially in homes that rely on electric resistance heat. A programmable or smart thermostat and swapping remaining bulbs to LED are lower-effort versions of the same idea.
Ask about time-of-use and budget billing. Idaho Power and other Idaho utilities offer time-of-use rate schedules that charge less for power used outside peak summer afternoon and evening hours — worth asking about if you can shift laundry, dishwashing, or EV charging to off-peak hours. Separately, budget billing (sometimes called levelized or average billing) spreads your annual usage into equal monthly payments, so a July air-conditioning bill or a January heating bill doesn't blindside you even though it doesn't change what you pay over a year. Neither is automatic — call your utility and ask what's available on your account.
Rooftop solar, measured honestly. Solar payback math runs directly off your utility's rate, and at 11.8 cents per kWh, Idaho has one of the lowest residential rates in the country, which stretches the payback period out considerably compared to somewhere like California or the Northeast. That doesn't rule it out — a south-facing roof with strong sun exposure and high usage can still pencil out over enough years, especially with the rate's roughly 1.8-percent annual climb continuing — but it means the decision deserves real numbers, not a national average. Run the math against your actual bill and your utility's net-metering terms before signing anything; our solar panels guide walks through the full calculation.
The practical checklist
Twenty minutes with your last few utility bills:
- Confirm your utility and territory. Know whether you're served by Idaho Power, Avista, Rocky Mountain Power, or a cooperative — your bill states it, and it determines who to call for programs and outage reporting.
- Ask about time-of-use and budget billing. Call your utility directly; these programs are opt-in and rarely advertised on the bill itself.
- Fix the biggest usage drivers first. Insulation, air sealing, and an HVAC tune-up move the needle more than any thermostat habit, especially in homes with electric resistance heat.
- Check for efficiency rebates. Many Idaho utilities offer rebates on insulation, smart thermostats, or HVAC upgrades — ask before you pay full price.
- Run solar numbers against your real bill. Skip the national-average pitch; get a quote and calculate payback at your actual 11.8-cent baseline and usage, keeping in mind Idaho's low rate means a longer payback than most states.
- Ignore any "switch your provider" pitch. Idaho is regulated — there is nothing to switch to.
For the house-side fundamentals behind these numbers — panel capacity, wiring, and what actually drives usage — see our electrical guide.
Sources
- U.S. Energy Information Administration — Idaho average residential rate (11.8 cents/kWh, 2025 preliminary), the 88 percent increase since 2005, and the 1990–2025 historical price series in the chart.