renewable energy

Gov. Janet Mills has signed three bills aimed at fighting climate change by ushering in renewable energy.

Jessica Carter / Summit

Summit Utilities, which operates Summit Natural Gas of Maine, is building what is called a "Dairy Digester" in the Kennebec County town of Clinton. The company is investing about $20 million into the project.

Caitlin Troutman / Maine Public

The group "SolaRISE Portland" took advantage of Saturday’s break in rain to hold a march and fundraiser.

Robert F. Bukaty / AP Photo

Gov. Janet Mills said that her administration is committed to addressing the threats posed by climate change.

Robert F. Bukaty / AP Photo

Gov. Janet Mills said that her administration is committed to addressing the threats posed by climate change.

Introspective Systems

Renewable energy sources like wind and solar are muscling their way into the country's energy mix. But they're still pretty unpredictable, creating significant management challenges and big swings in electricity prices. 

Central Maine Power (CMP) is forging ahead with plans to build a major transmission line in western Maine to bring wind and hydro power from Canada into New England's electricity grid. This is despite losing its bid for a big renewable energy contract from Massachusetts this week, which was instead provisionally awarded to a New Hampshire-based transmission project, called Northern Pass.

FILE- In this Oct. 26, 2011 file photo, wind turbines line the hillside at First Wind's project in Sheffield, Vt.
Toby Talbot / AP Photo/File

Nine states in the region, including Maine, say they will set more aggressive limits on pollution by electricity generation plants.

The Regional Greenhouse Gas Initiative, or RGGI, is a market-based cap-and-trade program that sets limits on carbon-dioxide emissions in participating states. Power generators can buy and sell emission allowances under the program, and it produces revenues that the states largely invest in energy efficiency.

Maine is one of eight states leading the way in developing clean energy economies.

  Danish environmental educator Søren Hermansen spoke about how his island of Samso, Denmark, became energy independent. Hermansen was named one of Time's 2008 Heroes of the Planet, described as "a green oracle, traveling from country to country telling the story of Samso's success."

Speaking in Maine returned to Bar Harbor - and the College of the Atlantic for a talk by Danish environmental educator Søren Hermansen.