Bio mass is biological carbon based material derived from living, or recently living organisms such as plants and trees. But biomass can equally apply to both animal and vegetable derived material.
The difference between biomass and fossil fuels is one of time scale. Biomass takes carbon out of the atmosphere while it is growing, and returns it as it is burned. If it is managed on a sustainable basis, biomass is harvested as part of a constantly replenished crop. This maintains a closed carbon cycle with no net increase in atmospheric CO2 levels.
Biomass boilers offer an environmentally sound, heating solution. Burning biomass, such as pellets or logs, emits the same amount of carbon dioxide as is absorbed while the plants were growing. The boilers efficiently extract energy to provide both heating and hot water.
Savings in CO2 emissions are significant – up to 9.5 tonnes per year when a wood boiler replaces a solid (coal) fired system or electric storage heating.