and what are the advantages and disadvantages ?
You would have to use it as the fuel to raise steam in a generating plant.
Advantages: apparently carbon-neutral, although by the time you take into account the energy that goes into growing and transporting it, this isn't really true.
Disadvantages: using land to grow fuel pushes up the price of food. This is already happening to a tragic extent
Biomass contains a great deal of water, and it takes energy to remove that. It also contains sulphur and nitrogen, so it is far from clean as a fuel.