Portland electricity and gas rates
Who supplies power and gas to Portland houses and what a typical house uses: about 550 kWh of electricity and 60 therms of gas a month.
Electricity: Central Maine Power (CMP)
CMP residential rates as of July 1, 2026: a $27.37 monthly fixed charge that includes 50 kWh, then $0.24680 per kWh (delivery plus the Standard Offer supply rate of $0.127210 for 2026). Customers who choose a competitive supplier have different rates.
| Charge | Price |
|---|---|
| Fixed charge | $27.37 a month |
| First 50 kWhs a month | 0.00¢ |
| Next kWhs above 50 a month | 24.68¢ |
Gas: Unitil
Unitil R2 Residential Heat Rate effective July 1, 2026, with Unitil's cost of gas; the cost of gas typically changes May 1 and November 1.
| Charge | Price |
|---|---|
| Fixed charge | $33.87 a month |
| First 40 therms a month | $1.1934 |
| Next therms above 40 a month | 93.94¢ |
Ways to pay less
- Low income: PWD Lifeline water rate. Portland Water District's Low Income minimum charge is $3.02, compared with $12.86 for the standard 5/8-inch residential meter. Lifeline rates are based on the Home Energy Assistance Program (HEAP) guidelines. How: Contact The Opportunity Alliance at (207) 553-5900 or 877-429-6884.
- LIHEAP-eligible: 30% off Unitil gas. Unitil residential customers identified by the Maine State Housing Authority as eligible for LIHEAP may get a 30% discount on delivery and gas supply rates for 12 months. How: Call Unitil at 1-888-301-7700 with questions about the discount.
Sources
- City Council order on CMP net energy billing agreement
- Maine PUC residential electric rates (as of July 1, 2026)
- Unitil Maine residential gas rates (NU-ME)
- EIA Maine natural gas consumption
- EIA Maine natural gas consumers
Checked October 22, 2026. Every number here comes from the public sources listed, matched by our checker.
Rates change every year; this page shows when it was last checked. Nothing here is legal, tax or insurance advice.