The effects of higher bioethanol blends on greenhouse gas emissions from the UK passenger car fleet at various time horizons during the transition to net zero: A review
DOI:
https://doi.org/10.23917/arstech.v4i2.1775Keywords:
Bioethanol, Environment, Greenhouse gas emissions, Passenger car, Vehicle fleet turnover modelAbstract
There is a need to minimise the Greenhouse Gas Emissions (GHG) of petrol-powered cars during the transition to net zero. This research examines the effects on GHG from the recent adoption of E10 as the standard 95-octane petrol grade in the United Kingdom (UK). Also, it considers the potential of using higher bioethanol blends within the national car fleet and the effect of increased lifetime mileage due to the growing incidence of extended vehicle ownership. A comprehensive fleet turnover model and a separate numerical model to predict the GHG emissions for various powertrain types using different bioethanol blends were developed. Sensitivity studies that model the effects of different annual mileage using E10 and applying the proposed UK fleet composition scenarios at 10-year intervals from 2020 to 2050 were conducted. The results support the claimed percentage reduction of GHG emissions arising from the UK petrol car fleet using E10 when compared to E5 and establish that using a higher bioethanol blend such as E15 would provide still further reductions in most instances except in the case of plug-in hybrid vehicles where an increase in GHG emissions was observed at the 2030 and 2040 time horizons. An increase in annual mileage creates a linear increase in GHG emissions, although the rate of increase is not the same for each propulsion type. Such an increase can potentially disrupt the achievement of the UK's 2050 net zero target and future periodic carbon budgets.
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References
Department for Transport, "Measures for introduction of E10 fuel stream Impact Assessment", 2020.https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/870089/impact-assessment-measures-for-introduction-of-e10-fuel-stream.pdf [accessed: 3 June 2022]
Department for Transport, "Introducing E10 petrol_ outcome and summary of responses", GOV.UK, 2021. https://www.gov.uk/government/consultations/introducing-e10-petrol/outcome/introducing-e10-petrol-outcome-and-summary-of-responses [accessed: 18 Jul 2022]
Department for transport, "Targeting net zero – Next steps for the Renewable Transport Fuels Obligation", 2021. https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/974822/targeting-net-zero-rtfo.pdf [accessed: 18 Jul 2022]
Hansard, "Renewable Transport Fuel Obligations (Amendment) Order 2021", UK Parliament. 2021. https://hansard.parliament.uk/lords/2021-11-30/debates/D947B7AA-A8E7-4C6E-A8DF-D6AAB85808C0/RenewableTransportFuelObligations(Amendment)Order2021 [accessed: 18 Jul 2022]
Climate Change Committee, "The Sixth Carbon Budget Surface Transport", 2020. https://www.theccc.org.uk/wp-content/uploads/2020/12/Sector-summary-Surface-transport.pdf [accessed: 18 Jul 2022]
Department for Transport, "Decarbonising Transport – A Better, Greener Britain", GOV.UK. 2021.https://www.gov.uk/government/publications/transport-decarbonisation-plan [accessed: 18 Jul 2022]
Department for Transport, "Decarbonising Transport A Better, Greener Britain One Year On", 2022.https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1090420/Decarbonising-transport-one-year-on-review.pdf [accessed: 19 Jul 2022]
Department for Transport, "Introducing E10 petrol: outcome and summary of responses", GOV.UK, 2021.https://www.gov.uk/government/consultations/introducing-e10-petrol/outcome/introducing-e10-petrol-outcome-and-summary-of-responses [accessed: 9 Jul 2022]
Department for Transport, "Driver and Vehicle Licensing Agency. Vehicle Licensing Statistics: Annual 2020", GOV.UK, 2021 https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/985555/vehicle-licensing-statistics-2020.pdf [accessed: 11 Jul 2022]
C. Bauer, J. Hofer, H.J. Althaus, A. Del Duce, and A. Simons, "The environmental performance of current and future passenger vehicles: Life cycle assessment based on a novel scenario analysis framework", Applied Energy. Vol.157, pp. 871–883, 2015. https://doi.org/10.1016/j.apenergy.2015.01.019
G. Barjoveanu, F. Dinita, and C. Teodosiu, "Aging passenger car fleet structure, dynamics, and environmental performance evaluation at the regional level by life cycle assessment", Sustainability, vol. 14, no. 14, pp. 8443, 2022. https://doi.org/10.3390/su14148443
E. Weymar E, and M. Finkbeiner, "Statistical analysis of empirical lifetime mileage data for automotive LCA", International Journal of Life Cycle Assessment, vol. 21, no. 2, pp. 215–223, 2016. https://doi.org/10.1007/s11367-015-1020-6
Z. Yang, B. Wang, and K. Jiao, "Life cycle assessment of fuel cell, electric and internal combustion engine vehicles under different fuel scenarios and driving mileages in China", Energy, vol. 198, 117365, 2020. https://doi.org/10.1016/j.energy.2020.117365
N. Kalita, Z. Xu, and A. Kumar, "Application of software to study the impact of transportation sectors' greenhouse gas emissions reduction on climate change", Environmental Progress and Sustainable Energy, vol. 35, no. 6, p. 1559–1565, 2016. https://doi.org/10.1002/ep.12504
L.G. Pereira, O. Cavalett, A. Bonomi, Y. Zhang, E. Warner, and H.L. Chum, "Comparison of biofuel life-cycle GHG emissions assessment tools: The case studies of ethanol produced from sugarcane, corn, and wheat", Renewable and Sustainable Energy Reviews, vol. 110, p. 1–12, 2019. https://doi.org/10.1016/j.rser.2019.04.043
R.R. Tan, A.B. Culaba, and M.R.I. Purvis, "POLCAGE 1.0 - A possibilistic life-cycle assessment model for evaluating alternative transportation fuels", Environmental Modelling and Software, vol. 19, no. 10, pp. 907–918, 2004. https://doi.org/10.1016/j.envsoft.2003.10.004
J.A. Obnamia, G.M. Dias, H.L. MacLean, "Saville BA. Comparison of U.S. Midwest corn stover ethanol greenhouse gas emissions from GREET and GHGenius", Applied Energy, vol. 235, pp. 591–601, 2019. https://doi.org/10.1016/j.apenergy.2018.10.091
S.A. Afolalu, O.O. Yusuf, A.A. Abioye, M.E. Emetere, S.O. Ongbali, and O.D. Samuel, "Biofuel; A Sustainable Renewable Source of Energy-A Review", IOP Conference Series: Earth and Environmental Science, vol. 665, no.1, pp. 012040, 2021. https://doi.org/10.1088/1755-1315/665/1/012040
Department for Transport, "Renewable fuel statistics 2021: Fourth provisional report", GOV.UK, 2021. https://www.gov.uk/government/statistics/renewable-fuel-statistics-2021-fourth-provisional-report/renewable-fuel-statistics-2021-fourth-provisional-report [accessed: 25 Jul 2022]
S. Ahlgren, S. and L. Di Lucia, "Indirect land use changes of biofuel production–a review of modelling efforts and policy developments in the European Union", Biotechnology for Biofuels, vol. 7, pp.1–10. 2014. https://doi.org/10.1186/1754-6834-7-35
H.K. Jeswani, A. Chilvers, and A. Azapagic, "Environmental sustainability of biofuels: a review", Proceedings of the Royal Society A, vol. 476, no. 2243, p.20200351, 2020. https://doi.org/10.1098/rspa.2020.0351
S. Searle, F.P. Sanchez, C. Malins, and J. German, "Technical barriers to the consumption of higher blends of ethanol", The International Council on Clean Transportation, 2014. https://theicct.org/publication/technical-barriers-to-the-consumption-of-higher-blends-of-ethanol/
Y. Kroyan, M. Wojcieszyk, M. Larmi, O. Kaario, and K. Zenger, "Modeling the impact of alternative fuel properties on light vehicle engine performance and greenhouse gases emissions", SAE Technical Papers, no. 2019-01-2308, SAE International, 2019. https://doi.org/10.4271/2019-01-2308
International Energy Agency, "Fuel economy in the United Kingdom", Part of Global Fuel Economy Initiative 2021. https://www.iea.org/articles/fuel-economy-in-the-united-kingdom [accessed: 10 June 2022].
D. Nagra, "Plug-in hybrid cars use more fuel than official figures claim", Which? https://www.which.co.uk/news/article/plug-in-hybrid-cars-use-more-fuel-than-official-figures-claim-aIpyB5l2V4A8 [accessed: 10 June 2022]
GOV.UK, "Energy and Environment (TSGB03)", Department for Transport. https://www.gov.uk/government/statistical-data-sets/tsgb03#fuel-consumption [accessed: 10 June 2022]
F. Badin, F.L. Berr, G. Castel, J.C. Dabadie, H. Briki, P. Degeilh, and M. Pasquier, "Energy efficiency evaluation of a plug-in hybrid vehicle under European procedure, worldwide harmonised procedure and actual use", World Electric Vehicle Journal, vol. 7, no. 3, pp. 475–488, 2015. https://doi.org/10.3390/wevj7030475
I. Riemersma, and P. Mock, "Too low to be true? How to measure fuel consumption and CO2 emissions of plug-in hybrid vehicles, today and in the future", The International Council on Clean Transportation, 2017. https://theicct.org/publication/too-low-to-be-true-how-to-measure-fuel-consumption-and-co2-emissions-of-plug-in-hybrid-vehicles-today-and-in-the-future/ [accessed: 10 June 2022]
A. Krajinska, "A new dieselgate in the making", Transport & Environment, 2020. https://www.transportenvironment.org/wp-content/uploads/2021/07/2020_11_Plug-in_hybrids_report_final.pdf [accessed: 4 August 2022].
US. Department of Energy, "Gas Mileage of 2020 Toyota Prius Prime", https://www.fueleconomy.gov/feg/bymodel/2020_Toyota_Prius_Prime.shtml [accessed: 10 June 2022]
P. Plötz, C. Moll, G. Bieker, P. Mock, and Y. Li, "Real-world usage of plug-in hybrid electric vehicles: Fuel consumption, electric driving, and CO2 emissions", The International Council on Clean Transportation, 2020. https://theicct.org/publication/real-world-usage-of-plug-in-hybrid-electric-vehicles-fuel-consumption-electric-driving-and-co2-emissions/ [accessed 22 June 2022]
L.L.P. De Souza, E.E.S. Lora, J.C.E. Palacio, M.H. Rocha, M.L.G. Renó and O.J. Venturini, "Comparative environmental life cycle assessment of conventional vehicles with different fuel options, plug-in hybrid and electric vehicles for a sustainable transportation system in Brazil", Journal of cleaner production, vol. 203, 125883, pp.444–468, 2018. https://doi.org/10.1016/j.jclepro.2021.125883
A. Milovanoff, I.D. Posen, B.A. Saville, and H.L. MacLean, "Well-to-wheel greenhouse gas implications of mid-level ethanol blend deployment in Canada's light-duty fleet", Renewable and Sustainable Energy Reviews, 131, p.110012. 2020. https://doi.org/10.1016/j.rser.2020.110012
Department for Transport, "Targeting net zero – Next steps for the Renewable Transport Fuels Obligation", 2021. https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/974822/targeting-net-zero-rtfo.pdf [accessed: 2 March 2023]
Directive 2009/28/EC of The European Parliament and of The Council, "On the promotion of the use of energy from renewable sources and amending and subsequently repealing Directives 2001/77/EC and 2003/30/EC", Official Journal of the European Union, (Text with EEA relevance. 2009 https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32009L0028 [accessed: 3 June 2023]
Department for Energy Security & Net Zero, "Greenhouse gas reporting: conversion factors 2019", GOV.UK, 2019. https://www.gov.uk/government/publications/greenhouse-gas-reporting-conversion-factors-2019 [accessed: 3 June 2023]
Department for Transport, "Biofuel statistics: Year 10 (2017 to 2018), report 6", GOV.UK, 2019. https://www.gov.uk/government/statistics/biofuel-statistics-year-10-2017-to-2018-report-6 [accessed: 3 June 2023]
Directive (EU) 2015/1513 of The European Parliament and of The Council, "Amending Directive 98/70/EC relating to the quality of petrol and diesel fuels and amending Directive 2009/28/EC on the promotion of the use of energy from renewable sources", Official Journal of the European Union, 2015. https://eur-lex.europa.eu/legal-content/EN/TXT/HTML/?uri=CELEX:32015L1513&from=EN [accessed: 3 June 2023]
Department for Transport, "Vehicle licensing statistics: 2020", GOV.UK, 2021. https://www.gov.uk/government/statistics/vehicle-licensing-statistics-2020 [accessed: 2 June 2022]
Department for Transport, "Vehicle licensing statistics data tables", GOV.UK, 2022. https://www.gov.uk/government/statistical-data-sets/vehicle-licensing-statistics-data-tables [accessed: 20 June 2022]
J. Irwin, "The latest numbers on the microchip shortage: Chip supply crimps N. America", Automotive News, 2023. https://www.autonews.com/topic/latest-numbers-microchip-shortage [accessed: 20 Sept 2023]
J. Morfeldt, S.D. Kurland, and D.J.A. Johansson, "Carbon footprint impacts of banning cars with internal combustion engines", Transportation Research Part D: Transport and Environment, vol. 95, p.102807, 2021. https://doi.org/10.1016/j.trd.2021.102807
L. Fridstrøm, V. Østli, and K.W. Johansen, "A stock-flow cohort model of the national car fleet", European Transport Research Review, vol. 8, no. 22, 2016. https://doi.org/10.1007/s12544-016-0210-z
L. Spangher, W. Gorman, G. Bauer, Y. Xu, and C. Atkinson, "Quantifying the impact of U.S. electric vehicle sales on light-duty vehicle fleet CO2 emissions using a novel agent-based simulation", Transportation Research Part D: Transport and Environment, vol. 72, pp. 358-377, 2019. https://doi.org/10.1016/j.trd.2019.05.004
45. Automotive Management, "UK's 2022 new car sales downgraded as April data shows slump continues", Market Insight, 2022. https://www.am-online.com/news/market-insight/2022/05/05/uk-s-2022-new-car-sales-downgraded-as-april-data-shows-slump-continues [accessed: 20 Jun 2022]
CEIC DATA, "UK Motor Vehicles Sales Growth 2006–2022", 2022. https://www.ceicdata.com/en/indicator/united-kingdom/motor-vehicles-sales-growth [accessed: 21 Jun 2022]
L. Lonza, H. Hass, H. Maas, A. Reid, and K.D. Rose, "EU renewable energy targets in 2020: Analysis of scenarios for transport fuels", European Commission Joint Research Centre Institute for Energy, 2011. file:///C:/Users/USER/Downloads/reqno_jrc63080_jec_biofuels_report_2011_print[1].pdf
Eurostat, "End-of-life vehicles - reuse, recycling and recovery, totals", 2023. https://ec.europa.eu/eurostat/databrowser/view/ENV_WASELVT/default/table [accessed: 20 Aug 2023]
Matt de Press, "EVs expected to outnumber diesel cars on UK roads by 2030", Fleet news, https://www.fleetnews.co.uk/news/latest-fleet-news/electric-fleet-news/2021/02/18/evs-expected-to-outnumber-diesel-cars-on-uk-roads-by-2030 [accessed 20 Jun 2022]
Department for transport, "Policy design features for the car and van zero emission vehicle (ZEV) mandate", GOV.UK, 2022. https://www.gov.uk/government/consultations/policy-design-features-for-the-car-and-van-zero-emission-vehicle-zev-mandate [accessed 23 Jun 2022]
National Grid ESO, "FES 2020 documents", 2023. https://www.nationalgrideso.com/future-energy/future-energy-scenarios/fes-2020-documents [accessed 23 Jun 2023]
SMMT Driving the motor Industry, "December & Full Year 2021 New Car Registrations", The Society of Motor Manufacturers and Traders, 2022. https://media.smmt.co.uk/december-2021-new-car-registrations/ [accessed 27 Jun 2022]
C. Ternel, A. Bouter, and J. Melgar, "Life cycle assessment of mid-range passenger cars powered by liquid and gaseous biofuels: Comparison with greenhouse gas emissions of electric vehicles and forecast to 2030", Transportation Research Part D: Transport and Environment, vol. 97 p. 102897, 2021. https://doi.org/10.1016/j.trd.2021.102897
Volvo Car Annapolis, "Volvo C40 Recharge", https://www.volvocars.com/images/v/-/media/market-assets/intl/applications/dotcom/pdf/c40/volvo-c40-recharge-lca-report.pdf [accessed: 12 Jul 2022]
Department for transport, "Vehicle mileage and occupancy", GOV.UK, 2013. https://www.gov.uk/government/statistical-data-sets/nts09-vehicle-mileage-and-occupancy#car-mileage [accessed: 12 Jul 2022]
D.R. Keith, S. Houston, and S. Naumov, "Vehicle fleet turnover and the future of fuel economy", Environmental Research Letters, vol. 14, no. 2, pp. 021001, 2019. https://doi.org/10.1088/1748-9326/aaf4d2
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