1st Generation Biofuels

2nd Generation Biofuels

3rd Generation Biofuels

4th Generation Biofuels

Algae

Algae & Micro-Organisms

Bagasse

Biochar

Char

Charcoal

Miscanthus

MSW

Oil Crops

Seaweed

Sewage

Starch Crops

Sugar Crops

Wastes

Anaerobic Digestion

BECCS

Catalysis

Combustion

Fermentation

Gasification

Pyrolysis

Torrefaction

Bioenergy

Biogenic Carbon

Biomass

Feedstock

Lignocellulosic Biomass

Biogas

Biomethane

Briquettes

Hydrogen

Landfill Gas

Syngas