Current Average Electricity Supply Rate in Maine
As of September 2025, the average residential electricity price in Maine is approximately 27.98¢ per kWh. This places Maine among the most expensive states for electricity, reflecting its long transmission distances, dependence on imported fuels and participation in ISO‑New England’s high‑cost wholesale market.
Recent Rate Trends
- June 2025: 27.1¢/kWh
- July 2025: 27.4¢/kWh
- August 2025: 27.7¢/kWh
Projected Rate Trends
- October 2025: 28.3¢/kWh
- November 2025: 28.6¢/kWh
- December 2025: 28.8¢/kWh
Where Maine rates are today
Maine has some of the highest electricity prices in the United States. At nearly 28¢ per kWh, the state’s average residential rate is more than 50% higher than the national average. Long transmission distances to serve a small, dispersed population and limited local generation contribute to these elevated costs.
Why Maine rates have been the way they are
- Long transmission lines: Maine’s sprawling geography and low population density require extensive transmission and distribution infrastructure, driving up per‑customer costs.
- ISO‑New England constraints: New England’s wholesale market suffers from capacity constraints and reliance on imported fuels, which translate into higher regional prices.
- Fuel mix: Maine imports a significant share of its power from natural gas‑fired plants in the region despite having some hydro and biomass resources; this leaves prices sensitive to gas markets.
- Renewable and efficiency programs: State mandates for renewables and energy‑efficiency investments add program costs to supply rates.
Where Maine rates are going in the next 3 months
Heading into winter 2025‑26, Maine’s electricity costs are expected to creep higher by about 1‑3%. Colder weather increases demand for heating and can strain regional supply, especially if natural gas prices rise. Any sustained cold snap or pipeline bottleneck in New England would likely push rates higher.
Key takeaway for businesses
Because Maine is one of the costliest electricity markets, businesses and households should compare offers from multiple competitive suppliers. Locking in a fixed-rate plan before winter can provide budget certainty and potentially shield customers from spikes during extreme cold.