Maine city advances 100% clean energy by 2040 mandate

Facebook
Twitter
LinkedIn
Reddit
Email
If Portland, Maine successfully implements this mandate, it will  be the 27th US city to take the 100% renewables pledge. Source: Flickr/Don Shall

Portland, Maine, is the latest city in the US to pursue a 100% clean energy mandate – aiming to be entirely renewable by 2040.

City councillor Spencer Thibodeau, chairman of Portland’s sustainability and transportation committee, is to present the target as a council resolution, to be discussed at the next committee meeting tomorrow.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

To meet the ambitious goal, the committee plans to amend the city’s 2008 Municipal Climate Action Plan to accelerate Portland’s renewable energy capacity to meet the 2040 goal.

The goal would place Portland among a growing number of US communities that are leading efforts to reduce fossil fuel use that contributes to climate change and other environmental issues.

Most recently, Portland in Oregon made the pledge for 100% renewable energy by 2050. If Portland, Maine successfully implements the mandate, it will be the 27th US city to announce a 100% clean energy mandate, following St. Petersburg in Florida, and Los Angeles, California.

In other news, Chicago has pledged 100% renewables for all its public buildings by 2025 – becoming the first US city to do so.

Read Next

May 14, 2026
MN8 Energy has raised US$300 million to extend a corporate credit facility that will build out its pipeline of US solar and storage projects.
May 14, 2026
Canadian Solar has posted a quarter-on-quarter decline in both solar module shipments and net revenues in the first quarter of 2026.
May 14, 2026
Arava Power has acquired 50% of OCI Energy’s La Salle Solar project, a 670MW project that OCI expects to start commercial operations in 2028.
May 13, 2026
US solar manufacturer T1 Energy has registered a record quarterly net income and adjusted EBITDA in the first quarter of 2026.
May 13, 2026
RWE has commissioned its 273.6MW Emily Solar project in Illinois, taking the developer’s operating renergy portfolio in the state to 1GW. 
May 13, 2026
Meta has signed PPAs totalling 850MW with IPP DESRI, covering solar and battery storage projects across Oklahoma, Texas and Mississippi. 

Upcoming Events

Solar Media Events
May 20, 2026
Porto, Portugal
Upcoming Webinars
May 27, 2026
9am BST / 10am CEST
Upcoming Webinars
May 27, 2026
9am BST / 10am CEST
Media Partners, Solar Media Events
June 3, 2026
National Exhibition and Convention Center (Shanghai)
Solar Media Events
June 16, 2026
Napa, USA