The State Public Service Board is hearing testimony on a proposed wood-chip-fired power plant in North Springfield.
The 35 megawatt project would be Vermont's largest biomass plant.
Developers of the proposed plant say it will create jobs and help the state meet its goals for renewable energy.
Winstanley Enterprises is the company behind the plan, and it built North Springfield Industrial Park, where the plant would be built.
Winstanley partnered with Weston Solutions, which specializes in sustainable power projects.