BERLIN, New Hampshire — Since the mid-1800s, the economy of Berlin, New Hampshire, known as “The City that Trees Built,” revolved around the paper mill located in the heart of the city. Therefore, it was a devastating blow when the Fraser Paper pulp mill closed in 2006, as the community of Berlin and the rest of the region were dependent on the mill as a critical employer. “In 2008, an opportunity arose to bring new life to the shuttered mill by converting its existing black liquor boiler into a state-of-the-art, 75-MW biomass power generating facility, and Burgess BioPower was born,” says Sarah Boone, vice president of public affairs for Burgess BioPower. “Today, Burgess BioPower delivers 500,000 megawatt hours of local, clean and reliable power to New Hampshire annually, along with acting as an economic driver in the state’s North Country and beyond.” …Today, Burgess BioPower is the largest single buyer of biomass in the state.