Enumerating the technological viability and climate impact of jet electrification
🤖 AI Summary
Electric aviation’s technical feasibility and climate benefits remain uncertain, particularly regarding battery energy density constraints on short-haul flight electrification. Method: We develop an aircraft energy demand model integrated with global aviation operations data and regional grid carbon intensity databases to quantify technology thresholds for aircraft electrification and associated life-cycle carbon emissions. Contribution/Results: Small, short-range aircraft are already technically viable for electrification, whereas large wide-body aircraft remain constrained by current battery performance. Electrification yields substantial net emission reductions in regions with low-carbon electricity grids—e.g., Europe—but may increase net emissions in coal-intensive Asian countries due to high grid carbon intensity. These findings reveal pronounced spatial heterogeneity in climate benefits and provide critical scientific evidence for regionally differentiated policy design and phased deployment strategies for electric aviation.
Application Category
📝 Abstract
Enabling battery technology has not achieved sufficient maturity to facilitate electric flight for all aircraft models across all distances. Consequently, existing discourse emphasizes electrifying short haul routes using smaller, lighter aircraft. Does this emphasis have merit. We estimate a model that addresses this question. Our findings are fourfold. First, we find that current energy density limitations impede short haul electric flight, regardless of aircraft model utilized. Second, we document that electrifying smaller, lighter aircraft models serving short haul routes may be particularly challenging as these aircraft require more, not less, acute increases in energy density. Third, we identify a subset of larger, heavier aircraft as better candidates for electrification and note that doing so could prevent the annual release of significant amounts of carbon dioxide equivalent. However, we observe that the regional benefits of electrification are highly heterogeneous. The largest emissions benefit is realized in Europe, followed by South America, North America, Oceania and Africa. Electrification flights originating in Asia produces a net increase in carbon emissions owing to the disproportionate share of miles claimed by Asian countries with a more carbon intensive electrical grid. Indian emissions warrant scrutiny, as its emissions contribution most disproportionately exceeds its mileage contribution. The implications of these findings for decarbonization policy are subsequently discussed.
Problem
Research questions and friction points this paper is trying to address.
Assessing battery limitations for electric flight viability
Evaluating energy density challenges in short haul electrification
Analyzing regional CO2 impact of aircraft electrification
Innovation
Methods, ideas, or system contributions that make the work stand out.
Evaluates energy density limits for electric flight
Identifies larger aircraft as better electrification candidates
Assesses regional carbon impact of flight electrification
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