A biogenic carbon, carbon that's grown on the surface of the earth, is recycled through photosynthesis. When it's combusted, it turns into carbon dioxide, which is reuptaken through plants' photosynthesis. It's circular.
Without taking the processing into account, terrestrial biomass—as opposed to coal, which takes millions of years to sequester—is carbon neutral, except you have to take into account that you're using some fossil fuels during the processing. That's when you're driving your skidder out to drag the trees in or you're transporting your pellets to market. We track the greenhouse gas balance throughout the whole supply chain, from the stump through to the power plants. By our calculations, which are audited by third parties and have to be reported to governments, we're about 90% better than coal would be, on average.