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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E2: Senate “Slams Brakes” on Made-in-USA Energy, Putting Projects, Jobs and Energy Security At Risk

WASHINGTON (July 1, 2025) – The U.S. Senate passed a massive tax and spending bill that will phase out and repeal federal tax policies creating jobs, driving new investments in manufacturing, and increasing American energy production. Businesses have ann...


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Businesses Cancel $1.4 Billion In New Factories, Energy Projects in May as Congress Pushes Forward on Tax Increases

Cancellations now total $15.5 billion since January; nearly 12,000 jobs lost GOP districts see $9 billion in investments; 10,000 jobs disappear due to cancelled or delayed projects so far $444 million in new investments announced in M...


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Senate Bill Threatens Investments, Jobs, Energy Security

Federal tax policies that are creating jobs and increasing America’s energy supplies would be phased out or repealed in new language released by the Senate Finance Committee today as part of President Trump’s massive tax and spending package.


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