Solid, liquid or gaseous fuel made from plant material. Examples: Solid – wood, charcoal, pellets. Liquid – Biodiesel, ethanol, fish oils. Gaseous – biogas, woodgas.
Solid, liquid or gaseous fuel made from plant material. Examples: Solid – wood, charcoal, pellets. Liquid – Biodiesel, ethanol, fish oils. Gaseous – biogas, woodgas.