David MacMillan, an independent director of Viridian Group Ltd., an energy company based in Ireland, joined the boards of Puget Energy and Puget Sound Energy in 2012. An energy executive with more than 25 years’ experience in project finance, MacMillan has served as managing director and senior advisor to Good Energies Capital (now named Bregal Energy), a New York-based private equity fund focused on the North American energy sector. MacMillan also has served as a non-executive director of Ontario Power Generation and Intergen. He currently serves on the board of Potentia Solar, a Toronto-based independent solar-power producer.. Mr. MacMillan holds a B.A. and a M.A. in Economics from McGill University.