Mark A. Barnett

Partner - Boston

Bio photo for Mark Barnett

Contact Information


617.832.7000 Download vCard

As co-chair of Foley Hoag’s Energy & Cleantech Group, and head of the firm’s Renewable Energy Project Finance and Development Practice, Mark Barnett has an extensive business law practice focused on the energy and clean sectors. Mark works closely with clients developing innovative technologies and business approaches to solving energy and sustainability challenges, advising emerging and high growth companies in all aspects of strategic development, financings and acquisitions, intellectual property and industry-specific regulatory and policy matters. He also leads the firm’s renewable energy project finance practice with a particular focus on solar energy project development and finance, working with a broad range of developers, project sponsors and investors in this dynamic and growing sector.

More »


  • Yale Law School, J.D.
  • Yale University, B.A.

Representative Experience

  • Represented Soltage, LLC in a $70M equity capital partnership with Basalt Infrastructure Partners. 
  • Represented AEGON USA Realty Advisors (an affiliate of Transamerica) in connection with tax equity investments in North Carolina solar portfolios totaling 100MW and 30MW respectively.
  • Advised Soltage, LLC on equity investments by an affiliate of Tenaska, Inc. as well as various equity, debt and M&A transactions in connection with multiple solar portfolios across the U.S.
  • Represented CleanCapital in a financing transaction with Generate Capital to fund the acquisition of up to $300 million in distributed solar assets.
  • Represented SolidEnergy, developer of the “anode-free” battery, in its $12M Series B financing round with leading corporate strategic investors.
  • Represented Greenwood Energy in US solar financing activities, including a hybrid construction and permanent lending facility with a large national financial institution, a tax equity financing and a back leverage lending facility. 
  • Represented BlueWave Capital on joint venture with a Morgan Stanley affiliate to fund and jointly develop a portfolio of 30 MW of community solar assets in Massachusetts.
  • Advised a leading residential energy efficiency provider in its $25 million Series D financing.
  • Advised Black Coral Capital, LLC on its investment in Clean Energy Collective, LLC, a leader in community solar solutions.
  • Advised Altaeros Energies, Inc. on Series A Financing led by Softbank Corp.
  • Represented True Green Capital Management LLC, an institutional asset manager specializing in distributed power generation with a current focus on distributed commercial PV solar, in the closing of its $113M fund, the True Green Capital Opportunity Partnership, L.P.
  • Advised Sun Catalytix on various financing and sale to Lockheed Martin Corporation.


  • Recognized as a ‘#Solar100 Thought Leader’ by kWh analytics (2018)
  • Listed as one of ‘The Top 100 People Shaping Cleantech on Twitter’ by CleanTechnica (2015) 
  • Listed as a ‘Rising Star’ in Super Lawyers' Massachusetts Rising Stars: A Comprehensive Listing on the Best Young Lawyers in Massachusetts (2009, 2013-2014)


  • PRIME Coalition, Pro Bono Counsel
  • Cleantech Open, Mentor
  • MassChallenge, Mentor
  • New England Clean Energy Council, Policy Committee
  • American Bar Association, Member
  • Ceres Clean Trillion Project, Advisor
  • Brookline Education Foundation, Board Member
  • Boston Bar Associations, Member

  • Moderator, “Emerging Trends Series: Solar + Storage,” NECEC (March 13, 2018)
  • Speaker, “Financing Solar + Storage,” Solar Power Northeast (February 5, 2018) 
  • Judge, InnovateMass program, Massachusetts Clean Energy Center (2017) 
  • Speaker/Moderator, “Innovative Financial Models within Renewable Energy & Energy Efficiency,” Sustainatopia (October 3, 2017)
  • Panelist, NECEC Cleantech Financial Innovation Summit (June 22, 2017) 
  • Speaker, “Innovative Financial Models within Renewable Energy,” Sustainatopia (October 11, 2016)
  • Moderator, “Energy Storage Forum,” NECEC and Foley Hoag LLP (September 20, 2016) 
  • Moderator, "Community Solar Financing," Solar Power International (September 13, 2016) 
  • Moderator, “Financial Innovations at the Scale Up & Deployment Stage of Clean Energy Solutions,” NECEC Cleantech Financial Innovation Summit (June 15, 2016)
  • Panelist, “Technology and Business Model Innovation,” BSAS Investing in Clean Energy Seminar (June 9, 2016)
  • Panelist, “The National Energy Efficiency Registry,” ACEEE Energy Efficiency Finance Forum (May 24, 2016)
  • Panelist, “Clean Energy After COP21,” NECEC (February 10, 2016)
  • Panelist, “Enabling Clean Energy Implementation Through Policy, Technology/Innovation and Finance,” 21st Conference of the Parties to the United Nations Framework Convention on Climate Change (COP21/CMP11), (November 30-December 11, 2015)
  • Panelist, “Investing in Solar," Sustainatopia Conference, Boston, MA (November 17, 2015)
  • Panelist, “Development and Financing Issues,” Novogradac Financing Renewable Energy Conference (November 6-7, 2014)
  • Panelist, “Navigating Climate Risk and Investing for Impact,” Ceres, Black Coral Capital and PRIME Coalition (November 4, 2014)
  • Panelist, "Creative Solar Financing Matching Funds & Projects, "Solar Power Mid-Atlantic Conference presented by Solar Energy Industries Association (SEIA), (September 9-10, 2014)
  • Panelist, “Drivers of Cleantech Innovation: Policy, Capital, and IP,” Boston Bar Association Roundtable (February 7, 2014)
Add to Bio Folder

Download Bio

Bar Admissions

  • Massachusetts
  • Connecticut