Maine does not have fossil fuel reserves of its own, but it has vast renewable energy potential. Because of its substantial use of wood as fuel, the state has the highest percentage of non-hydroelectric renewable energy use in the country. Maine produces more electricity from burning wood and wood waste than any other state, as these resources provide over a quarter of the state’s electricity. Due to its forest products industry, Maine is the only New England State in which industry is the leading energy-consuming sector, accounting for 34 percent of its energy consumption in 2010. It has the lowest average electricity prices among the New England states.


Maine’s State Rankings

  • In 2010, Maine ranked 43rd among the states in total energy production, producing 145 trillion Btu of energy.
  • In February 2013, it ranked 43rd in electricity production, producing 1,152 thousand megawatt hours of electricity.
  • Maine had the lowest average electricity retail prices in New England at the end of 2012.
  • In 2010, it ranked 28th in the total energy consumed per capita, consuming 307 million Btu per person.
  • In 2010, Maine ranked 7th lowest in carbon dioxide emissions, emitting 18.5 million metric tons of carbon dioxide.

Natural Gas

Maine has no fossil fuel reserves of its own. It receives its natural gas by pipeline primarily from Canada. Natural gas is used in the state mainly for electricity generation. Maine ships much of its natural gas receipts to the Boston area via New Hampshire. The Maritimes and Northeast Pipeline carrying natural gas from Canada and an LNG facility in New Brunswick, Canada, provide Maine with natural gas that supplies the Northeast market in the United States. The Maritimes and Northeast Pipeline system has the capacity to carry 440 million cubic feet of natural gas per day.


Maine does not produce oil and has no oil reserves but receives petroleum products from abroad at its coastal ports, including Portland, Searsport, and Calais. Because Maine has no refineries, the Port of Portland sends its crude oil shipments via pipeline to refineries in Quebec and Ontario.

Maine uses fuel oil for home heating during its long, cold winters. Over two-thirds of Maine households use fuel oil as their primary energy source for home heating, a higher share than in any other state. Due to the Northeast’s high use of fuel oil for home heating and to reduce the risk of fuel shortages due to weather and other issues, the Department of Energy established the Northeast Heating Oil Reserve. The Reserve gives Northeast consumers adequate supplies for about 10 days, the time required for ships to carry heating oil from the Gulf of Mexico to the New York Harbor. The Reserve’s storage terminals are located in Perth Amboy, New Jersey, and Groton and New Haven, Connecticut.

Coal, Electricity and Renewable Energy

Maine’s net electricity generation is among the lowest in the United States. Natural gas is its single dominant fuel for power generation, accounting for more than 40 percent of its generation in 2012. Renewable sources, wood and wood waste, hydroelectric, and wind, together account for over half of Maine’s net electricity generation.

Maine has substantial renewable energy potential through its numerous rivers, forests, and windy areas that provide for hydroelectric, wood-fired, and wind-powered generation. The state is one of the top U.S. producers of electricity from wood and wood waste, producing 26 percent of the state’s electricity in 2012. Non-hydroelectric renewable energy sources (wood and wood waste and wind) account for a larger share of net electricity generation (about one-third) in Maine than in any other state.


Source: Energy Information Administration, Electric Power Monthly, February 2013,

Because demand for air-conditioning is low during its cool summer months and because few households use electricity as their primary energy source for home heating, Maine’s residential electricity use is low compared with the rest of the nation.

Maine State Regulatory Environment

Like most states, Maine requires new residential and commercial buildings to meet energy efficiency standards. Unlike some states, Maine does not require gasoline to be mixed with renewable fuels. It does not impose state-based appliance efficiency standards. And, it does not allow utilities to “decouple” revenue from the sale of electricity and natural gas, which allows utilities to increase their revenue by selling less electricity and natural gas.

While Maine does not cap greenhouse gas emissions, it is a member of a regional agreement to cap greenhouse gas emissions from power plants. Maine is a member of the Regional Greenhouse Gas Initiative (RGGI), a regional agreement among nine Northeast states to limit greenhouse gas emissions. This agreement requires states to cap carbon dioxide emissions from the electric generation sector at 2005 levels in 2009 and to reduce those emissions by 10 percent by 2019 through a cap-and-trade program.

In September 1999, Maine’s Public Utilities Commission adopted a renewable portfolio standard (RPS) requiring that at least 30 percent of retail electricity sales come from renewable sources.  Eligible renewable sources include fuel cells, tidal, solar, wind, geothermal, hydro, biomass or municipal solid waste in conjunction with recycling.  Since 1999, the renewable portfolio standard has been amended several times and two separate classes designated. Class II includes existing renewables, which are eligible to meet the 30 percent requirement. Class I is composed of new renewable sources that have come on-line after September 1, 2005. The schedule for Class I renewables started at 1 percent in 2008 and increases by 1 percentage point each year until 2017, when it must total 10 percent. The Maine RPS requires renewables (Class I and II combined) to reach 40 percent by 2017.

Besides the RPS, there are three goals for wind-energy development in Maine: (i) at least 2,000 megawatts of installed capacity by 2015; (ii) at least 3,000 megawatts of installed capacity by 2020, of which there is a potential to produce 300 megawatts from facilities located in coastal waters or offshore; and (iii) at least 8,000 megawatts of installed capacity by 2030, of which 5,000 megawatts should be from facilities in coastal waters or offshore. The first two goals were established in April 2008 (L.D. 2283), and the third was established in April 2010 (L.D. 1810).

Maine imposes automobile fuel economy standards similar to California’s, which include attempts to regulate greenhouse gas emissions from new vehicles. Maine’s Board of Environmental Protection adopted amendments to Chapter 127, New Motor Vehicle Emission Standards, in 2005, adopting California’s vehicle emissions standards.

Maine requires new residential and commercial buildings to meet energy efficiency standards. Residential buildings must meet the Maine Uniform Building and Energy Code (MUBEC) based on the 2009 IRC, while commercial buildings must meet the MUBEC based on the 2009 International Energy Conservation Code (IECC) or ASHRAE 90.1-2007. The IRC, the IECC (developed by the International Code Council) and ASHRAE (developed by the American Society of Heating and Refrigeration and Air Conditioning Engineers) are model codes that mandate certain energy efficiency standards.

New state buildings must also meet energy efficiency standards. Maine requires the incorporation of “green building” standards into the design, construction, operation and maintenance of any new, expanded or existing state building if cost-effective. Maine Statutes Title 5, Section 1764-A also requires that plans and designs for the construction of new or substantially renovated buildings owned or leased by the state include an energy-use target that exceeds standards for commercial and institutional buildings by at least 20 percent.

In March 2005, the governor of Maine announced that the state would join the federal “Energy Star Challenge.” As part of this partnership, the state committed to encouraging building owners and operators throughout Maine to improve energy efficiency by 10 percent or more using performance contracting and other mechanisms. The state also agreed to track energy use and greenhouse-gas emissions from government buildings and identify the best ways to improve energy efficiency in those buildings.

In 2003, Maine’s governor established a goal for the state government to buy at least 50 percent of its electricity from “reasonably priced” renewable-power sources, paid for by energy conservation improvements in all state buildings.  As of March 2007, Maine’s state government was purchasing 100 percent of its power from renewable energy resources. The state’s existing renewable energy portfolio standard accounts for 30 percent of this total. For the remaining 70 percent, the state is purchasing renewable-energy credits (RECs) from the Rumford Falls hydropower project in Rumford, Maine.


The State of Maine has no fossil fuel reserves, but does have potential for substantial renewable energy from hydroelectricity, wood and wood waste (biomass) and wind, generating over 50 percent of its electricity from these sources. It has the lowest average electricity prices among the New England states and is their leading industrial producer because of its biomass energy sources.


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