Using TPO and DOE/EIA surveys
to track wood biomass/ bioenergy –
How can we improve methods?
Biomass/ Bioenergy Workshop
Houston, TX
February 25, 2010
Ken Skog, Project Leader
USDA Forest Service
Forest Products Laboratory
Madison, Wisconsin
[email protected]
Background
 Forest Service provides some wood energy source
estimates
– Fuelwood production
– Primary mill residue use for fuel
 DOE/EIA provides wood energy end use estimates
– Electric power
– Industrial, residential, commercial, transportation
 A lot is missing
– Intermediate wood fuels (pellets, liquid fuels
potentially)
– Sources of fuel used for DOE end use categories
– Why don’t source estimates match end use
estimates?
 What steps could improve estimates?
What should we track? –
traditional TPO & wood biomass for bioenergy
 For the timber market –
– Which wood sources are consumed – NG/NGS, HW/SW [same for
wood for bioenegy?]
– What is consumed by key industries
• Industrial roundwood (several categories),
• Fuelwood
• Expand Fuelwood category?
– Roundwood for residential fuelwood
– Roundwood/ chips for pellets
– Roundwood/ chips for other energy users
 For primary product markets (sawmills, panels, pulp/paper)
– What residues are produced/ who consumes
– Expand residue fuel uses?
• Pellets
• Wood for bioenergy – electric power or combined heat / power
• Wood for bioenergy - other
Wood energy sources, intermediate products, and end uses
Wood fuels
End Uses (DOE)
Forest
Growing stock (FIA)
Non GS (FIA)
Charcoal
Residential pellets
Commercial pellets
Pyrolysis oil
Liquid fuels
Primary products
Industrial roundwood
(TPO)
Fuelwood (TPO)
Industrial wood source
Primary mill residue (TPO)
-- Wood
-- Bark
Secondary mill residue
-- Wood
-- Bark
Other ??
Urban wood waste construction, demolition
Stand alone electric power
-- Pulp & paper
-- Wood mills
-- Other
Combined heat and power
-- Pulp & paper
-- Wood mills
-- Other
Thermal energy
--Industrial
-- Residential
--Commercial
-- Other ?
Transportation
Other ?
Short rotation woody crops
Exported wood fuels
Wood energy sources, intermediate products, and end uses – 2006
Possible revised TPO wood energy categories
(forest wood sources)
 Roundwood for residential fuelwood
 Roundwood/ chips for other energy users
 Roundwood for pellets
Wood energy sources, intermediate products, and end uses – 2006
Should we expand primary wood residue USES? Pellets
Wood for bioenergy – electric power or combined heat / power
Wood for bioenergy - other
Should we survey pellet mill wood SOURCES?
Should we survey secondary mill residue USES?
Wood energy sources, intermediate products, and end uses – 2006
Could a survey of pellet mills determine uses including
exports?
Wood energy sources, intermediate products, and end uses – 2006
How will uses of short rotation woody
crops be determined? Part of TPO studies?
Wood energy sources, intermediate products, and end uses – 2006
Should FS & DOE work to reconcile wood
energy estimates?
For 2006
DOE ~129 million dt
USFS ~109 million dt
Wood energy sources, intermediate products, and end uses – 2006
DOE vs FS
Summary of suggestions to improve tracking of
wood energy sources and uses
 Expand Timber product output categories to include
– Roundwood for residential fuelwood
– Roundwood/ chips for other energy users
– Roundwood for pellets
 Expand primary wood residue USES
– Pellets
– Wood for bioenergy – electric power or combined heat / power
– Wood for bioenergy – other
 Survey pellet mill wood SOURCES & pellet USES/ exports
 Survey secondary mill residue USES?
 Are short rotation woody crops uses part of TPO studies?
 Should FS or DOE attempt to reconcile differing estimates?