Mark Liffmann is Vice President of Sales, Marketing and Business Development at Clean Power Research. Mark’s career includes co-founding one of the largest business units at SunPower where he led growth to over $500 million in annual revenue, and pioneered the successful expansion of the business unit to the European Union. While at SunPower, Mark also led the integration of the small commercial team after merging with PowerLight, and he helped form partnerships with numerous Fortune 500 companies. Previously at Solar Depot, Mark was responsible for doubling revenue and headcount in two years while serving as Vice President of Business Development and COO, and he established the groundwork for a successful sale of the business to Itochu. Mark’s experience also includes leading sales and business development efforts at EnerG2, a Seattle based energy materials startup, and serving at the law firm of Gunderson Dettmer, which specializes in financing emerging growth companies. Mark holds a B.S. in Physics and a B.A. in Public Policy from Stanford University, and a J.D. and an M.S. in Economics from Harvard University. Mark has been a member of E2 since 2002 and co-founded the Pacific Northwest chapter of E2 in 2009. Mark is married to fellow E2 member, Brooke Coleman, and is a father of two.

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Our Latest Press Releases


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E2: Repealing EPA’s Endangerment Finding For Vehicle Emissions Raises Costs for Businesses and Consumers

The EPA officially revoked the endangerment finding for greenhouse gas (GHG) emissions and eliminated clean vehicle standards in a blow to both our economy and our environment.


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E2: Companies Cancelled $34.8B, 38K Jobs for Clean Energy Projects in 2025, Outpacing New Investments 3-to-1

Businesses abandoned $5.1 billion in large-scale factories and clean energy projects in December, capping a turbulent year for the sector that saw nearly $35 billion in investments disappear along with more than 38,000 current and future jobs, according to ...


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E2: Trump Administration’s Latest Attempt to Kill Offshore Wind Hurts Consumers, Businesses

The Trump administration is trying to halt offshore wind projects that are well-underway just two weeks after their initial attempt was deemed arbitrary and capricious by a federal judge.


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