Maine Energy In 2026: The Rate Fights, Wind Wins And Solar Rules So Far

Maine's 2026 energy news breaks into a handful of running storylines: a year-long fight over Central Maine Power's rate case, a criminal case tied to shootings at three CMP substations, storm-driven outages, the federal government's cancellation of offshore wind leases, a major onshore wind and transmission buildout in Aroostook County, a new plug-in solar law paired with local fights over solar farms, and a scatter of heat pump, battery storage and utility-oversight items.

The CMP rate case ran from a March law prioritizing affordable rates and refunds for 15 years of overpaid transmission costs, through June hearings and a Lewiston hearing that drew protesters, to Iberdrola opening its books in August and a possible $7-a-month increase by fall. A separate August fact brief found Maine ranked 5th among all states for residential electric prices between January and May.

The biggest recurring project is Aroostook County's wind and transmission buildout: an 800-megawatt onshore wind project won regulatory approval in August with a 111-mile transmission line, Electrek put the capacity gain at 66%, and the project could save ratepayers up to $425 million, with Massachusetts helping finance a companion power line and Rhode Island Energy conditionally taking on 150 megawatts of the project's output. That expansion contrasts with offshore wind's retreat, after Trump administration deals paid $1 billion to drop leases in March and scrapped two Gulf of Maine leases in June.

Elsewhere, Gov. Mills announced more than $40 million for heat pump water heaters, and a battery storage facility opened in Gorham.

The CMP Rate Case, Hearing By Hearing

• Maine passed a law prioritizing affordable electric rates, Maine Public reported in March. (Maine Public)
• Maine electric ratepayers could get refunds for 15 years of overpaying for power transmission, Bangor Daily News reported in March. (Bangor Daily News)
• CMP's new rate plan could mean a short-term bill decrease followed by a long-term hike, the Portland Press Herald reported in April. (The Portland Press Herald)
• Maine utility regulators were set to hold hearings on CMP's rate proposal, Maine Public reported in June. (Maine Public)
• A CMP rate hike hearing in Lewiston drew protesters and fierce testimony, the Portland Press Herald reported in June. (The Portland Press Herald)
• Iberdrola had to open its books as CMP sought greater profits in its ongoing rate case, a utility regulator said, Bangor Daily News reported in August. (Bangor Daily News)
• Maine ranked 5th among the 50 states for residential electric prices between January and May 2026, Central Maine reported in an August fact brief. (Central Maine)
• CMP bills could go up $7 a month as soon as this fall, the Portland Press Herald reported in August. (The Portland Press Herald)

The CMP Substation Shootings

• Shots were fired at three CMP substations in Augusta, Windsor and Winslow, WGME reported in February. (WGME)
• A man accused of shooting the CMP substations was held on $250,000 cash bail, WGME reported in February. (WGME)
• A Maine man confessed to shooting the CMP substations, according to federal court documents, Bangor Daily News reported in May. (Bangor Daily News)
• The accused CMP substation shooter, identified as Thomas Welch and facing federal charges for the February shootings in Winslow, Windsor and Augusta, was released from federal custody, Central Maine reported in September. (Central Maine)

Storms, Outages And The Grid

• CMP unveiled four new high-tech trucks aimed at boosting reliability and winter response, foxbangor.com reported in January. (foxbangor.com)
• Avangrid Utilities demonstrated strong preparedness and response during a blizzard, Business Wire reported in February. (Business Wire)
• CMP restored power to more than 1,000 in Waldo County, Central Maine reported in March. (Central Maine)
• A Central Maine Power outage affected 11,788 households across Central Maine towns, Central Maine reported in June. (Central Maine)
• Maine utility crews were out clearing trees and restoring downed lines across the state, Q106.5 reported in July. (Q106.5)
• The Portland jetport lost power for nearly six hours as storms caused significant damage across southern Maine, with thousands of CMP customers in Cape Elizabeth, South Portland and Scarborough also losing power, Central Maine reported in August. (Central Maine)

Offshore Wind: Washington Pulls Back

• The Trump administration will pay a French company $1 billion to drop U.S. offshore wind leases, NPR reported in March. (NPR)
• Trump's $1 billion payment to a French company to scrap offshore wind would hurt Maine, Maine Beacon reported in April. (Maine Beacon)
• Maine joined a lawsuit over the Trump administration's deal to end a New York offshore wind project, WMTW reported in June. (WMTW)
• A Trump administration deal scrapped two Gulf of Maine wind energy leases, Maine Public reported in June. (Maine Public)
• The termination of the Gulf of Maine leases cast further uncertainty over offshore wind, Maine Morning Star reported in July. (Maine Morning Star)
• As U.S. offshore wind disappears, a generation of workers is left behind, Maine Morning Star reported in August. (Maine Morning Star)

Aroostook County's Wind And Transmission Buildout

• Maine tried again to unlock wind energy, this time with help, Maine Morning Star reported in March. (Maine Morning Star)
• Wind farms and transmission lines were poised to come to northern Maine, the Portland Press Herald reported in June. (The Portland Press Herald)
• A new CMP power line was selected as the 'preferred' solution to improve regional power flows, Maine Public reported in July. (Maine Public)
• A Clearway Energy wind farm and Avangrid transmission proposals were selected for the Aroostook County renewable energy push, Yahoo reported in August. (Yahoo)
• Maine's regulator approved an 800-megawatt onshore wind project with a 111-mile transmission line, Engineering News-Record reported in August. (Engineering News-Record)
• Massachusetts will help finance another big Maine power line, this one for Aroostook County wind farms, the Boston Globe reported in August. (The Boston Globe)
• An 800-megawatt wind farm could boost Maine's onshore wind capacity by 66%, Electrek reported in September. (Electrek)
• Maine approved the state's largest-ever wind farm, saying it could save ratepayers up to $425 million, the Cool Down reported in September. (The Cool Down)
• Rhode Island Energy conditionally selected 150 megawatts from the proposed 800-megawatt Maine onshore wind project, Energies Media reported in September. (Energies Media)

Solar's New Law And Its Local Fights

• A new bill could make solar power more accessible to Maine renters, Maine Morning Star reported in January. (Maine Morning Star)
• Solar companies sued over a 'discriminatory' Maine law, Maine Public reported in January. (Maine Public)
• Swift Current Energy secured $248 million for a 122-megawatt Maine solar project, PV Tech reported in February. (PV Tech)
• A Down East town banned large solar farms, Bangor Daily News reported in March. (Bangor Daily News)
• Plug-in solar could be coming to Maine thanks to a bill, the Portland Press Herald reported in April. (The Portland Press Herald)
• A policy change virtually stopped new community solar development in Maine, solarpowerworldonline.com reported in April. (solarpowerworldonline.com)
• Maine became the third state to pass plug-in solar legislation, pv magazine USA reported in April. (pv magazine USA)
• Legislators greenlit low-cost residential plug-in solar for Mainers, Bangor Daily News reported in April. (Bangor Daily News)
• 1,800 community solar customers lost bill credits after providers failed to pay a state charge, WGME reported in July. (WGME)
• The Jay Select Board declined to send a solar moratorium to voters, the Daily Bulldog reported in August. (Daily Bulldog)
• A petition to put a solar moratorium in Jay on the ballot, prompted by a proposal for roughly 800 to 900 acres of solar panels on about 2,500 acres near the former Androscoggin Mill, qualified for the November ballot, Sun Journal reported in September. (Sun Journal)

Heat Pumps, Batteries And The Utility Beat

• A massive battery storage facility opened in Gorham, furthering Gov. Mills' energy agenda, the Portland Press Herald reported in February. (The Portland Press Herald)
• Gov. Mills announced more than $40 million in funding for heat pump water heaters, WABI reported in March. (WABI)
• Mainers have embraced heat pumps in many ways, the Portland Press Herald reported in an opinion piece in July. (The Portland Press Herald)
• Hackers regularly probe Maine water utilities, officials said, the Portland Press Herald reported in August. (The Portland Press Herald)
• A Maine utility warned about door-to-door pitches for power savings, saying 'that is not our team,' Yahoo reported in August. (Yahoo)
• Northport won a solar fight with CMP, Midcoast Villager reported in September. (Midcoast Villager)

Compiled from reporting by the outlets linked above; follow the links for their full stories.