Posted on 21 January 2025 by BaerbelW

On November 1, 2024 we announced the publication of 33 rebuttals based on the report "Rebutting 33 False Claims About Solar, Wind, and Electric Vehicles" written by Matthew Eisenson, Jacob Elkin, Andy Fitch, Matthew Ard, Kaya Sittinger & Samuel Lavine and published by the Sabin Center for Climate Change Law at Columbia Law School in 2024. Below is the blog post version of rebuttal #12 based on Sabin's report.

Solar panels generate energy even in cloudy or cold conditions¹ (also Ramli et al. 2016). Although cloudy weather may reduce power generation by as much as 45%, substantial energy can still be generated during those conditions (Ramli et al. 2016 and Makrides et al. 2012).

Furthermore, in most instances, cold temperatures do not reduce electricity output at all—and actually increase solar panel efficiency by increasing voltage² (also Sarmah et al. 2023). Crystalline silicon cells, which comprise approximately 84% of the U.S. market, and cadmium telluride cells, which comprise approximately 16% of the U.S. market, actually perform better in colder weather². Only amorphous silicon cells, which represent a negligible percentage of the U.S market, experience decreased performance in colder temperatures.

Footnotes:

[1] What happens to solar panels when it's cloudy or raining?, Solar Energy Industries Association (last visited March 25, 2024)

[2] Solar Photovoltaics: Supply Chain Deep Dive Assessment, U.S. Dep’t of Energy, Feb. 24, 2022, at iii

Skeptical Science sincerely appreciates Sabin Center's generosity in collaborating with us to make this information available as widely as possible.