I hate calling it green as it still causes general air pollution. Shipping it is a huge problem. Better to just use the other carbon free sources of energy like renewables, hydro, nuclear, or geothermal, than to burn biomass.

Technically no living organism is a sequestration. Maybe for a human time scale it is, but not the environmental time scale. We could be growing vegetation and treating it as nuclear waste. The best form of long storage being large heavy lawn dart style containers dropped into the north Pacific. Sadly people don't do that with nuclear waste because of public ignorance and the stigma against putting waste in the ocean.