REPEAT (Rapid Energy Policy Evaluation and Toolkit) on US energy policy changes
Robbie Morrison
Hello again all
I just tripped over some interesting work from the GenX
crew based in Princeton
in a newsletter from climate author Bill McKibben
on the proposed One
Big Beautiful Bill Act (OBBBA):
- McKibben, Bill (23 May 2025). A truly dark day in DC. The Crucial Years. San Francisco, California, USA. Substack newsletter.
Scroll down one or two screens to find a summary of results by Jesse Jenkins and his team at REPEAT (Rapid Energy Policy Evaluation and Toolkit). For instance, the OBBBA will approximately:
- Increase U.S. greenhouse gas emissions by roughly 0.5 billion metric tons per year in 2030 and more than 1 billion metric tons per year in 2035.
And so on. The REPEAT report itself is available on Zenodo:
- Jenkins, Jesse, Jamil Farbes, Ryan Jones, Abigail Cheng, Qian
Luo, and Benjamin Haley (22 May 2025). A fork in the road:
impacts of Federal Policy repeal on the US energy transition —
Version v4. Princeton, New Jersey, USA: REPEAT Project.
doi:10.5281/zenodo.15486177.
DOI resolves to latest version. CC‑BY‑4.0 license.
There are parallels here with the rapid attribution studies (RAS) from climate scientists that assess the increased likelihood of a particular extreme weather event given a changing climate. However their response time is slower, I would say their turnaround is probably more like weeks.
best, Robbie
-- Robbie Morrison Address: Schillerstrasse 85, 10627 Berlin, Germany Phone: +49.30.612-87617