Sparklines

Solar Panels and Wind Turbines Are Today’s Answer to the Model T

The growth in EV batteries, solar and wind energy is dramatic even compared to disruptive mass-produced technologies of the past. 

In terms of cost reduction, EV batteries and solar are winners over historical analogues.

Photographer: Sean Gallup/Getty Images
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Last month the International Energy Agency published its second Net Zero Roadmap report, which describes a way for the global economy to meet the goals of the Paris Agreement. The first edition of the report, in 2021, was a departure for an organization known more for its detailed data than its normative view of the future. This year’s roadmap finds no immediate progress on emissions, but it does offer a “brighter note.” As the authors state in their introduction, “The path to 1.5 degrees C has narrowed, but clean energy growth is keeping it open.”

Behind that growth, or perhaps within it, is the expansion of what the IEA calls “mass manufactured technologies”: solar photovoltaics, electric cars, residential heat pumps and stationary battery storage. These products benefit from “standardization and short lead times,” which means they can be produced by the millions or hundreds of millions, and manufacturers can roll out new and improved versions at a rapid clip.