Hydrothermal carbonization (HTC) of green waste: Mitigation potentials, costs, and policy implications of HTC coal in the metropolitan region of Berlin, Germany
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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in: Energy Policy, Jahrgang 123, 01.12.2018, S. 503-513.
Publikation: Beiträge in Zeitschriften › Zeitschriftenaufsätze › Forschung › begutachtet
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TY - JOUR
T1 - Hydrothermal carbonization (HTC) of green waste
T2 - Mitigation potentials, costs, and policy implications of HTC coal in the metropolitan region of Berlin, Germany
AU - Medick, Jakob
AU - Teichmann, Isabel
AU - Kemfert, Claudia
PY - 2018/12/1
Y1 - 2018/12/1
N2 - We quantify the greenhouse-gas mitigation potential and carbon abatement costs if green waste in the metropolitan region of Berlin, Germany, is diverted from composting into the production of hydrothermally carbonized coal (HTC coal) that is used to substitute for hard coal in electricity and heat generation. Depending on the origin of the green waste, we specify an urban, a rural-urban, and a rural scenario. All scenarios combined can mitigate 70,511 metric tons (t) of carbon-dioxide equivalents (CO2e) per year. The carbon abatement costs reach 163 €/t CO2e in the urban scenario, 76 €/t CO2e in the rural-urban scenario, and 77 €/t CO2e in the rural scenario. The lower abatement costs in the latter two scenarios are mainly due to HTC-coal co-firing in an existing power plant rather than constructing a new biomass power plant for HTC-coal mono-firing as in the urban scenario. While the abatement costs exceed the current carbon prices, they compare more favorably with commonly assumed damage costs of unmitigated climate change. Thus, the public support of HTC coal could be considered, with the primary policy focus on HTC-coal co-firing. HTC-coal co-firing could also lower the emissions of existing power plants during the fossil-fuel phase-out.
AB - We quantify the greenhouse-gas mitigation potential and carbon abatement costs if green waste in the metropolitan region of Berlin, Germany, is diverted from composting into the production of hydrothermally carbonized coal (HTC coal) that is used to substitute for hard coal in electricity and heat generation. Depending on the origin of the green waste, we specify an urban, a rural-urban, and a rural scenario. All scenarios combined can mitigate 70,511 metric tons (t) of carbon-dioxide equivalents (CO2e) per year. The carbon abatement costs reach 163 €/t CO2e in the urban scenario, 76 €/t CO2e in the rural-urban scenario, and 77 €/t CO2e in the rural scenario. The lower abatement costs in the latter two scenarios are mainly due to HTC-coal co-firing in an existing power plant rather than constructing a new biomass power plant for HTC-coal mono-firing as in the urban scenario. While the abatement costs exceed the current carbon prices, they compare more favorably with commonly assumed damage costs of unmitigated climate change. Thus, the public support of HTC coal could be considered, with the primary policy focus on HTC-coal co-firing. HTC-coal co-firing could also lower the emissions of existing power plants during the fossil-fuel phase-out.
KW - Economics
KW - Char
KW - Biocoal
KW - Bioenergy
KW - Life cycle
KW - Climate change
KW - Hydrothermal carbonization
UR - http://www.scopus.com/inward/record.url?scp=85054194662&partnerID=8YFLogxK
U2 - 10.1016/j.enpol.2018.08.033
DO - 10.1016/j.enpol.2018.08.033
M3 - Journal articles
AN - SCOPUS:85054194662
VL - 123
SP - 503
EP - 513
JO - Energy Policy
JF - Energy Policy
SN - 0301-4215
ER -