Biomass fuels come from wood, agricultural residues, energy crops, and organic waste. Each has distinct energy content, moisture, and supply chain characteristics. This guide covers the main biomass fuels used for energy generation.
Main biomass fuels
| Fuel | Source | Primary use |
|---|---|---|
| Wood pellets | Compressed sawdust, wood residues | Utility power, home heating |
| Wood chips | Forestry, sawmill residues | District heating, boilers |
| Bagasse | Sugarcane processing residue | Sugar mill electricity |
| Straw | Cereal crop residue | Biomass boilers |
| Rice husks | Rice processing residue | Local heat and power |
| Palm empty fruit bunches | Palm oil residue | Palm mill electricity |
| Miscanthus | Energy crop | Boiler, blend |
| Switchgrass | Energy crop | Boiler, cellulosic biofuel |
| Municipal solid waste | Waste stream | Waste to energy |
| Landfill gas | Decomposing waste methane | Electricity |
| Biogas from digestion | Food waste, manure, sludge | Heat and power |
Wood pellets
Compressed sawdust and wood residues at 6 to 10 mm diameter. Standardised specifications (ENplus, PFI). Dense, low moisture, consistent. Long shipping possible.
Major producers: US Southeast, Baltic States, Portugal. Major consumer: UK (Drax), Denmark, Netherlands, Japan, South Korea.
Wood chips
Cheaper than pellets. Higher moisture. Local supply chains typically. Common for district heating and industrial boilers in Nordic countries and Alpine regions.
Bagasse
Fibrous residue after crushing sugarcane for juice. Burned in sugar mill boilers to power sugar processing plus export electricity to grid. Brazil, India, Thailand, Australia all use bagasse for significant electricity generation.
Agricultural residues
Straw, corn stover, rice husks, and similar residues can be baled and used as fuel. Rice husks common in Asian rice growing regions. Straw common in European biomass boilers. Corn stover emerging in US.
Palm oil residues
Empty fruit bunches, palm kernel shells, and mesocarp fibre are palm oil byproducts. Used at palm mills for electricity and heat. Some export markets developed.
Energy crops
Miscanthus, switchgrass, willow, and poplar are dedicated crops grown for energy. Modest deployment. Compete with food crops for land.
Municipal solid waste
MSW combustion at waste to energy facilities generates electricity and heat. Different from typical biomass in composition and emissions profile. See how landfills work.
Biogas
Anaerobic digestion of food waste, manure, sludge, and other organics produces biogas (methane and CO2). Local use for heat and power. See our companion article on sludge management.
Landfill gas
Decomposing waste in landfills produces methane. Modern landfills capture this for electricity generation. See how landfills work.
Fuel properties
| Fuel | Heating value (MJ/kg) | Moisture |
|---|---|---|
| Wood pellets | 17 to 19 | Under 10% |
| Wood chips | 10 to 15 | 30 to 50% |
| Bagasse | 7 to 9 (wet) | ~50% |
| Straw | 14 to 16 | 10 to 20% |
| Rice husks | 12 to 14 | Under 15% |
| Coal (reference) | 20 to 30 | Under 10% |
Supply chains
Biomass supply chains include growing, harvesting, processing, transport, and storage. Long distance biomass shipping (US pellets to UK) adds cost and emissions. Local biomass has better environmental case.
Sustainability standards
Sustainable Biomass Program, Roundtable on Sustainable Biofuels, and others certify feedstock. Increasingly required for regulatory acceptance.
Global market
Where biomass fuels are going
- Sustainable aviation fuel from advanced biofuels.
- Reduced wood pellet expansion under scrutiny.
- Continued waste to energy in emerging markets.
- Biogas expansion for local energy.
- Landfill gas continued as waste declines.
- Certification and sustainability standards tightening.
Frequently asked questions
Which is the most common biomass fuel?
Wood in various forms globally. Bagasse in sugar producing countries.
Are wood pellets renewable?
Under most regulatory definitions yes. Carbon accounting contested.
What is bagasse?
Sugarcane residue used to power sugar mills.
Is biomass shipping problematic?
Long distance transport increases emissions and cost.
What certifications exist?
Sustainable Biomass Program, RSPO, RSB, others.
Is landfill gas biomass?
Yes. Methane from decomposing organic waste.
Are energy crops competitive?
Marginal. Compete with food crops for land.
What is anaerobic digestion?
Bacterial conversion of organic waste to biogas.
Where can I read more?
IEA Bioenergy, WBA, sustainability certification bodies.
Where can I see biomass plants?
Summary
Biomass fuels include wood pellets and chips, bagasse and other agricultural residues, energy crops, MSW, landfill gas, and biogas. Each has distinct supply chain, energy content, and use case. Bagasse cogeneration and biogas are among the strongest cases; long distance wood pellet shipping is more contested. Sustainability certification is expanding as regulatory acceptance requires it.
Next reading
- Biomass energy explained
- Is biomass really renewable
- Renewable energy guide
- Browse the UtilityRadar directory
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