Corridor Partners is a left-of-center consultancy group focused on providing clients with environmentalist-aligned strategies to address climate change, including promoting the reduction and elimination of the use of conventional energy sources.
Corridor Partners is a for-profit consultancy group that advises donors and other clients on strategies to achieve left-of-center political action in the areas of climate change and energy. Corridor was founded in 2011 and has offices in New York and Washington, D.C. 
Corridor provides advice towards building strategies to advance political support for left-of-center policies to reduce carbon emissions including investments and advocacy activities that support the developed strategy along with tools to evaluate its effectiveness of the efforts.  
William Roberts is a principal of Corridor Partners and has a long record of involvement in environmentalist policy and issues. His resume includes time as director of strategic communications at the Environmental Defense Fund, as president and executive director of the left-of center Beldon Fund, as board chair for the left-wing League of Conservation Voters Education Fund, and as director of U.S. Advocacy at the left-of-center Atlantic Philanthropies. 
Kathleen Welch is a principal at Corridor. In the past she has worked as executive director of Equal Justice Works, worked as deputy director of the Environmental Group at the Pew Charitable Trusts, and sat on the boards of the League of Conservation Voters, the Natural Resources Defense Council, and the NRDC Action Fund. 
Heather Stone is Corridor’s senior vice president, with a resume that includes senior leadership roles with Hillary for America, the Service Employees International Union (SEIU), the left-of center advocacy coalition America Votes, and the environmentalist grantmaking organization the Turner Foundation. 
Melissa Roy is senior consultant at the Corridor Partners and has advised the Climate Action Campaign, a far-left organization seeking to eliminate all conventional energy and greenhouse gas emissions.