Cumulative energy contained in biomass will change the format as heat. Then we heat water in a pot, boil the water, then large is the steam. We put it in the steam generator rotation.
The energy stored in the biomass is converted into thermal energy forms. I think we put that heat to boil water in a large pot until the water vapor. We take the steam is used to spin a generator.
The energy accumulated in the biomass will change the style into heat energy. We bring the heat to boil water in the radiator and a large steam. The steam is used in rotating generator.