BETC: Wood pellets, chips reduce GHG emissions by 65-100% | Biomassmagazine.com – Biomass Magazine

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The Biomass Thermal Energy Council and Life Cycle Associates today announced the release of the “Life Cycle Analysis of Renewable Fuel Standard Implementation for Thermal Pathways for Wood Pellets and Chips” study. The Study found that biomass fuels, in the form of wood pellets and chips, result in a 65 to over 100 percent reduction in greenhouse gas (GHG) emissions in comparison to heating oil, which exceeds the targeted 60 percent GHG reduction requirement for cellulosic biofuels replacing heating oil under the U.S. EPA’s Renewable Fuel Standard Program. The Study was conducted under grant issued by the USDA’s Forest Service.

“It has long been known that using wood fuels for heat reduces greenhouse gas emissions by displacing the use of conventional fossil fuels, like heating oil and natural gas,” said Peter Thompson, BTEC deputy director. “This new study quantifies the GHG advantages of wood fuels for the record and highlights the avoided emissions from the resource’s alternative fates.”

“The use of fossil fuels for thermal energy (heating, cooling, industrial process) is an overlooked 1/3rd of our energy country’s energy use.  Low value biomass residues are often treated as wastes with very poor carbon fates, require extremely little processing to become thermal energy and are shown to have very low Carbon Intensity scores.  Opening the RFS up to some of the most efficient pathways to replace heating oil and other fossil fuels used for both heating and transportation would be a major win for rapidly and drastically reducing carbon emissions,” said Dan Wilson, vice president of Wilson Engineering Services and former BTEC chair.

“Maintaining markets for wood processing residues supports the effort of keeping forests as forests across the country. Use of these manufacturing residues for renewable energy is such a market.  Their use for energy displaces fossil fuels and avoids alternate fates which have substantially greater climate impacts,” said Lew McCreery, forest products technologist of the USDA Forest Service, Eastern Region State and Private Forestry.

“The benefits of avoiding agricultural burning or composting emissions are often overlooked in discussions about biomass energy,” said Stefan Unnasch of Life Cycle Associates and technical manager of the analysis project team.

Since wood pellets and wood chips meet the GHG reduction targets under the RFS, are often made from waste biomass sourced from forest product mills, forest residue, fire hazard reduction, and culling of insect-infested standing dead trees, and have a significantly lower CI compared to heating oil and natural gas, the Study recommends that EPA reevaluate the RFS and consider creating a pathway for thermal conversion of biomass to thermal energy.

If biomass-based thermal energy were included under the RFS2, it could generate a D3 RIN, valued in the study at $1.50/RIN. For 1 MMBtu on an HHV-basis or 77,000 Btu on an LHV-basis, this would generate 12 RINs or $312 per ton of biomass (dry basis).

The study is available here: https://www.biomassthermal.org/wp-content/uploads/2021/06/LCA_TTC-Wood-Pellets-Chips-GHG-FINAL.pdf

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