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365 Days of Climate Awareness 362 – Life Cycle Assessment of Electric Vehicles [1]
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Date: 2022-08-10
The Fuels Institute is a nonprofit organization funded by a range of corporate sponsors including large retailers like Wal-Mart and large oil companies like Aramco, Phillips and ExxonMobil. A list like that might make the results suspect but I thought, not having a deep knowledge of the field, a report with likely more conservative associations would provide a useful baseline for comparison to other studies. Furthermore, the report contains side-by-side comparisons between internal combustion engine (ICE) vehicles, hybrid electric vehicles (HEVs), and battery electric vehicles (BEVs).
The report begins with a literature review of other LCAs of a range of passenger vehicles (from economy cars up to double-decker buses). The different studies showed a wide range of greenhouse gas (GHG) emissions estimates, based on differences in vehicles and methods. Other reports focused specifically on battery life, efficiency and recycling, and the total operating cost (TOC) over the course of a 10-year or 1-200,000 mile span.
The LCA itself breaks the vehicles down into three main categories:
Glider (body, chassis, interior, exterior and components)
Powertrain (battery to engine to wheels)
Fluids These categories are then applied to:
Sourcing (extraction)
Manufacture
“Well-to-tank” (WTT), i.e. energy production (whether petroleum or electricity)
This analysis shows that internal combustion (ICE) vehicles, hybrid (HEV) and battery-powered (BEV) vehicles are roughly similar in CO 2 equivalent (CO 2 eq) emissions after 19,000 miles driven. But after 200,000 miles driven, HEVs are responsible for 28% less CO 2 eq than ICEs; BEVs, 41% less.
Tomorrow: life cycle assessment of a wind farm.
Be brave, be steadfast, and be well.
Sources:
The Fuels Institute LCA on EVs, executive summary [PDF] Full report available after (free) registration.
The Fuels Institute
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https://www.dailykos.com/stories/2022/8/10/2115602/-365-Days-of-Climate-Awareness-362-Life-Cycle-Assessment-of-Electric-Vehicles
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