David Costello, Climate & Clean Energy Director
David brings more than 25 years of senior-level government management and policy experience to his climate and clean energy work at NRCM. Most recently, David directed two non-governmental climate change projects in Maryland and served as Deputy Secretary at the Maryland Department of Environment (MDE).
Prior to his work at the MDE, David served concurrently as Director of the Governor’s Delivery Unit (GDU) and Director of Maryland’s Office of Smart Growth.
Preceding his work in Annapolis, David served as Director of the Mayor’s Office of Community Investment in Baltimore City and as a regional and country program manager with the United States Agency for International Development (USAID).
David attended the University of Maine and is a graduate of The George Washington University and the London School of Economics. A native of Old Town, David currently lives in Brunswick with his wife Sally, daughter Grace, son Jack, and obstinate beagle Stella.
Favorite Ice Cream Flavor: Chocolate
My Favorite Way to Enjoy Maine: Hiking, walking about…
A favorite quote: “Do not follow where the path may lead. Go instead where there is no path and leave a trail.” —Ralph Waldo Emerson