Burgess BioPower

Cori Princell / NHPR

The biomass power plant in Berlin is getting half a million dollars from the state to build a waste heat recovery system that will soon power a new greenhouse.

The Burgess Biopower plant burns woodchips to make steam, which turns turbines and generates electricity.

Chris Jensen for NHPR

A pre-planned outage at Berlin's wood-burning power plant ends Saturday night.

The 75-megawatt Burgess Biomass Plant has been down for routine maintenance since last weekend.

Plant manager David Walker says they've been doing this twice a year since 2016.

"Biomass plants will typically schedule this time of year, because of what they call the spring and the fall mud season, so the loggers aren't allowed to get into the woods, or if the roads are posted and whatnot,” he says.

Chris Jensen for NHPR

A new biomass plant in Berlin is finally producing electricity for Public Service of New Hampshire under a controversial 20-year contract that a report says will cost PSNH ratepayers $125 million more than if the electricity was purchased on the open market...

That estimate came from the consulting firm of La Capra Associates which did the report for the state's Public Utilities Commission as part of a wide-ranging review of PSNH’s operations.

About 51 percent of the wood purchased for the new Burgess BioPower biomass plant in Berlin during its first two months of operation came from New Hampshire, according to a new “sustainability” report filed with the state’s Site Evaluation Committee.

Thirty-five percent came from Maine.

Five percent from Vermont.

Eight percent from Massachusetts.

And "one truck load" came from Canada.