The Energy Foundation, also known as the United States Energy Foundation, is a left-of-center “pass through” charitable foundation founded by and supported by a network of left-wing organizations. The Foundation began in January 1991 as a $20 million collaborative between the Pew Charitable Trusts, Rockefeller family foundations, and

The American Federation of Teachers (AFT) is the second-largest teachers’ union in the United States. The union represents roughly 1.5 million members, most of whom work in teaching and education-related jobs as well as nursing.

Thomas Fahr “Tom” Steyer is an American hedge-fund billionaire turned climate-change activist, and major political donor to environmental causes and Democrats advocating an environmentalist agenda to fight global warming. Steyer made his fortune as the co-founder and senior managing partner of Farallon Capital Management, a hedge fund worth $30 billion.

Also see Tides Nexus The Tides Foundation is a major center-left grantmaking organization and a major pass-through funder to numerous left-leaning nonprofits. The San Francisco, California-based 501(c)(3) nonprofit was founded in 1976 by Drummond Pike, a professional political activist who has since retired from the organization, to funnel

The Sixteen Thirty Fund (sometimes styled “1630 Fund”) is a left-of-center lobbying and advocacy organization founded in 2008. 211 Sixteen Thirty Fund often operates alongside its charitable “sister” nonprofit New Venture Fund, which

Planned Parenthood Federation of America, or Planned Parenthood, is an organization that provides reproductive health services and abortions both in the U.S. and abroad. In 1921, Socialist Party and American Eugenics Society member Margaret Sanger founded the American Birth Control League. In 1942, the organization was renamed Planned Parenthood. The

The National Education Association (NEA) is America’s largest labor union representing nearly three million employees, principally teachers. With affiliates in every state across 14,000 communities 358, NEA represents teachers, education support professionals, retired teachers, education faculty and

Also see the similarly named Open Society Foundations (nonprofit) The Foundation to Promote Open Society (FPOS) is one of two major grantmaking foundations funded by liberal financier and billionaire George Soros. It is closely affiliated with the Open Society Foundations (OSF; formally Open Society Institute). FPOS was founded in

The Center for Popular Democracy (CPD) is a left-of-center 501(c)(3) organization involved in voter mobilization and policy development. The center’s stated mission is “to create equity, opportunity and a dynamic democracy in partnership with high-impact base-building organizations, organizing alliances, and progressive unions.” CPD has opposed the use of zero carbon

The Center for American Progress (CAP) is a liberal Washington, D.C.-based think tank with strong ties to the Democratic Party establishment created in 2003 as the left-of-center alternative to the right-leaning Heritage Foundation. Since its founding, the organization has exerted significant influence within the American political left. The organization

The American Federation of Labor-Congress of Industrial Organizations (AFL-CIO) is the largest federation of labor unions in the United States. Formed in 1955 in a merger between the American Federation of Labor and the Congress of Industrial Organizations, the AFL-CIO boasts membership of over 9 million voting members and 3