Maine city advances 100% clean energy by 2040 mandate

April 24, 2017
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.

16 June 2026
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 16-17 June 2026, will be our fifth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2028 and beyond.
13 October 2026
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 13-14 October 2026 is our third PV CellTech conference dedicated to the U.S. manufacturing sector. The events in 2023, 2024 and 2025 were a sell out success and 2026 will once again gather the key stakeholders from PV manufacturing, equipment/materials, policy-making and strategy, capital equipment investment and all interested downstream channels and third-party entities. The goal is simple: to map out PV manufacturing in the U.S. out to 2030 and beyond.

Read Next

February 17, 2026
Chinese manufacturers dominate PV Tech Research’s new inverter bankability rating report, but recent EU and US policies targeting Chinese-made inverters may create opportunities for other companies.
February 16, 2026
Enfinity has expanded a bond facility with the Eiffel Investment Group to US$183 million, to further its work in US solar and BESS.
February 13, 2026
AES Indiana, a subsidiary of US utility AES Corporation, has started commercial operations at a 250MW solar-plus-storage plant in Pike County, Indiana, US.
February 13, 2026
The US Treasury’s interim Foreign Entity of Concern (FEOC) guidance is “in line with expectations” according to a US renewable energy supply analyst.
February 12, 2026
US solar EPC SOLV Energy has issued its initial public offering (IPO) on the Nasdaq Global Select Market, priced at US$25 per share.
February 12, 2026
Greenbacker has raised US$440 million in finance to support the development of the 674MW Cider solar project in the US state of New York.

Upcoming Events

Upcoming Webinars
February 18, 2026
9am PST / 5pm GMT
Solar Media Events
March 24, 2026
Dallas, Texas
Solar Media Events
April 15, 2026
Milan, Italy
Solar Media Events
June 16, 2026
Napa, USA
Solar Media Events
October 13, 2026
San Francisco Bay Area, USA