Research by the Department of Energy’s (DOE) Vehicle Technologies Office estimates the cost of an electric vehicle lithium-ion battery pack declined 87% between 2008 and 2021 (using 2021 constant dollars).
The 2021 estimate is $157/kWh on a usable-energy basis (the equivalent of $143/kWh on a rated-energy basis) for production at scale, i.e.,100,000 units per year. That compares to $1,237/kWh on a usable-energy basis in 2008.
The decline in cost is a combination of improvements in battery technologies and chemistries, and an increase in manufacturing volume.
Sources: 2018–2021 – U.S. DOE, Vehicle Technologies Office, using Argonne National Laboratory’s BatPaC: Battery Manufacturing Cost Estimation Tool.
2017 – Steven Boyd, DOE, Vehicle Technologies Office, 2017 Annual Merit Review, Batteries and Electrification R&D Overview, June 18, 2018, PowerPoint presentation, p. 7.
2016 – David Howell, DOE, Vehicle Technologies Office, 2017 Annual Merit Review, Electrochemical Energy Storage R&D Overview, June 20, 2017, PowerPoint presentation, p. 6.
2008–2015 – National Academies of Sciences, Engineering, and Medicine 2017. Review of the Research Program of the U.S. DRIVE Partnership: Fifth Report. Washington, DC: The National Academies Press, p. 173.