Portland Electricity Rates
- Our lowest Portland electricity rate today is 13.99¢/kWh. That's CleanSky Energy's 12-month plan.
- Portland plans we list average 16.48¢/kWh at 1,000 kWh. The most common range is 16¢ to 18¢.
- Central Maine Power's Standard Offer of 12.721 cents per kWh is lower than any plan we list in Portland right now.
Cheapest Electricity Plans in Portland
Today's Cheapest Portland Electricity Rates
Below is the lowest-priced plan from each supplier serving Portland. Whichever supplier you pick, Central Maine Power adds its delivery charge on top.
| Plan Name | Plan Length | Rate at 1,000 kWh | Sign up |
|---|---|---|---|
| CleanSky Energy – CleanSky Energy 12 Months | 12 months | 13.99¢/kWh | Continue |
| Ambit Energy – Ambit Energy Maine State Select | 12 months | 14.50¢/kWh | Continue |
| XOOM Energy – XOOM Energy Variable | Monthly | 17.19¢/kWh | Continue |
| Think Energy – Think Energy 12 Months | 12 months | 17.20¢/kWh | Continue |
| Electricity Maine – Electricity Maine 12 Months | 12 months | 17.99¢/kWh | Continue |
Portland Plans to Compare This October
Portland has a deregulated electricity market, which means you pick your provider and plan. Here are some of the cheapest options available today:
- CleanSky Energy – CleanSky Energy 12 Months (12-month): 13.99¢/kWh at 1,000 kWh.
- Ambit Energy – Ambit Energy Maine State Select (12-month): 14.50¢/kWh at 1,000 kWh. Locks in your rate for 12 months.
Portland Electricity Suppliers
We compare rates from certified Competitive Electricity Providers active in Central Maine Power’s Portland territory. Every supplier below offers plans to Portland residents today.
Portland Business Electricity Rates
Portland is Maine’s largest city and economic hub, with a thriving foodie and arts scene centered on the Old Port district, healthcare anchored by Maine Medical Center, and a growing creative economy. Commercial customers access deregulated CEP rates through the Central Maine Power territory.
Business electricity pricing factors in peak demand, load factor, and total volume. A quick quote is the only way to see what rates are available for your specific business profile.
Portland Electricity FAQ
Common questions about electricity rates, plans, and suppliers in Portland and the Central Maine Power service area.
Is electricity deregulated in Portland?
Yes, Portland homes can pick a plan from a competitive provider or stay on Central Maine Power's Standard Offer. Central Maine Power delivers the power either way.
Who has the cheapest electricity in Portland?
CleanSky Energy's 12-month plan has the lowest price we list in Portland today: 13.99¢/kWh at 1,000 kWh a month. Central Maine Power's Standard Offer is lower still at 12.721¢, so staying on it costs less for now.
Source: State of Maine
What are the cheapest electricity companies in Portland?
CleanSky Energy, Ambit Energy and XOOM Energy have the lowest prices we list in Portland today: 13.99¢, 14.5¢ and 17.19¢ per kWh at 1,000 kWh a month.
How much is the average monthly electric bill in Portland?
About $131 a month in 2024, before taxes. A typical home served by Central Maine Power used 557 kWh a month and paid about 23.43¢ per kWh on the default rate, all charges included (federal EIA data). Rates have risen since: even on the cheapest Portland plan we list today, the same usage would cost about $172.
Source: EIA, 2024
Is electricity more expensive in Portland than a year ago?
Yes, for homes on the default rate. Central Maine Power's Standard Offer has been 12.721¢/kWh since January 1, 2026, 19.9% higher than the 10.6128¢ it was on January 1, 2025.
Source: State of Maine
Why is my Portland electric bill higher than the plan price?
Plan prices cover only the electricity itself, and delivery is billed on top. On the cheapest plan we list in Portland today, delivery makes up about 51% of the bill: Central Maine Power adds $27.37 a month plus 11.959¢/kWh, or $147 at 1,000 kWh, while the electricity costs $140. Delivery is the same no matter which competitive provider you choose.
Source: State of Maine, July 2026
Are Central Maine Power delivery rates going up in Portland?
They may be. CMP's pending 2026 rate case asks for about $18 a month more on a typical bill.
Source: State of Maine, 2026
What rate options does Central Maine Power have in Portland?
CMP's Electric Technology rate is $41.24 a month plus 8.864¢/kWh for EV and heat-pump homes.
What happens if I leave my competitive provider in Portland?
In Maine, you can return to the standard offer at any time by contacting Central Maine Power. Homes have no minimum stay on Maine's standard offer; the 12-month wait applies only to larger business accounts. Central Maine Power's Standard Offer is 12.721¢/kWh now.
