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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REPORT: Clean energy grew 5X faster than rest of Georgia economy, added 3K jobs in 2024

Clean energy jobs grew more than five times faster in Georgia than the rest of the state's economy in 2024, raising the total number of clean energy workers in the state to over 85,500.


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Clean energy grew 3X faster than rest of California economy, added 7K jobs in 2024

SACRAMENTO, CA (Nov. 5, 2025) – Clean energy jobs grew more than three times faster in California than the rest of the state's economy in 2024, raising the total number of clean energy workers in the state to more than half a million, according to the tenth...


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Clean energy grew 6X faster than rest of North Carolina economy, added 3K jobs in 2024

Clean energy jobs grew more than six times faster in North Carolina than the rest of the state's economy in 2024, raising the total number of clean energy workers in the state to more than 113,000, according to the seventh annual Clean Jobs North Carolina r...


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