What is the average electricity rate in South Portland, Maine?

The average residential electricity rate in South Portland is approximately 25.90¢/kWh per kWh. The average household pays around $146 per month for electricity.

What is the average natural gas bill in South Portland?

Natural gas customers in South Portland pay an average of $114 per month. The rate is approximately $1.82/therm per therm.

Which electric company serves South Portland, Maine?

Electricity in South Portland is distributed by Central Maine Power Co. Contact your provider at your local service address to confirm which utility serves your home.

Which gas company serves South Portland?

South Portland natural gas service is provided by Unitil (Northern Utilities) and Spire Energy Maine. Call them directly for new service connections or to report a gas leak.

How do South Portland electricity rates compare to Maine averages?

South Portland's electricity rate of 25.90¢/kWh is below the Maine state average of 28.63¢/kWh. This can reflect a municipal utility or favorable regional generation mix.

How do I start or stop utility service in South Portland?

To start electric service in South Portland, contact Central Maine Power Co. For gas service, contact Unitil (Northern Utilities) and Spire Energy Maine. You'll typically need a photo ID, your new address, and a move-in date. Service can usually be established within 1-3 business days.

South Portland, Maine Gas & Electricity Rates — Utility Providers & Savings 2026

Gas & Electricity in South Portland, Maine

South Portland is served by Central Maine Power Co. Utilities covering Cumberland County report an average residential electricity rate of 25.90¢/kWh — below the Maine state average of 28.63¢/kWh — and a typical monthly electric bill of $146. Natural gas in South Portland is distributed by Unitil (Northern Utilities).

Compared to the Maine state average of 28.63¢/kWh/kWh, South Portland's electricity rate of 25.90¢/kWh is 2.73¢ below the Maine average. As Maine is a deregulated market, South Portland residents can shop for competitive electricity suppliers to potentially reduce their supply rate.

Electric Utility in South Portland

Central Maine Power Co

Natural Gas Utility in South Portland

Unitil (Northern Utilities)
Spire Energy Maine

South Portland vs Maine Energy Rates

Metric	South Portland	Maine Average	US Average
Electric Rate (¢/kWh)	25.90¢	28.63¢	16.00¢
Gas Rate ($/therm)	$1.82	$1.82	$1.47
Monthly Electric Bill	$146	$144	$117
Monthly Gas Bill	$114	$114	$73

Energy Assistance Programs for South Portland Residents

As a Maine city, South Portland residents can access the following state and local assistance programs:

✅ Maine Home Energy Assistance Program (HEAP)
✅ Maine Weatherization Assistance
✅ Efficiency Maine
✅ Maine State Housing Authority Programs

Energy-Saving Tips for South Portland Residents

✓ Insulate your attic to at least R-49 to reduce winter heat loss by up to 15%.
✓ Install a programmable thermostat and set it to 68°F while home, 60°F while sleeping or away.
✓ Seal air leaks around windows and doors before the heating season to cut drafts.
✓ Schedule an annual furnace tune-up every fall to maintain peak efficiency.
✓ Use heavy drapes on north-facing windows during winter to reduce cold air infiltration.

FAQ — Gas & Electricity in South Portland, Maine

The average residential electricity rate in South Portland is approximately 25.90¢/kWh per kWh. The average household pays around $146 per month for electricity.
Natural gas customers in South Portland pay an average of $114 per month. The rate is approximately $1.82/therm per therm.
Electricity in South Portland is distributed by Central Maine Power Co. Contact your provider at your local service address to confirm which utility serves your home.
South Portland natural gas service is provided by Unitil (Northern Utilities) and Spire Energy Maine. Call them directly for new service connections or to report a gas leak.
South Portland's electricity rate of 25.90¢/kWh is below the Maine state average of 28.63¢/kWh. This can reflect a municipal utility or favorable regional generation mix.
To start electric service in South Portland, contact Central Maine Power Co. For gas service, contact Unitil (Northern Utilities) and Spire Energy Maine. You'll typically need a photo ID, your new address, and a move-in date. Service can usually be established within 1-3 business days.