Rob Day
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cleantechinv.bsky.social
Rob Day
@cleantechinv.bsky.social
440 followers 300 following 380 posts
Pragmatic solutions to big problems. Nothing here is investment advice, viewpoints are personal only, YMMV…
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Reposted by Rob Day
michaelhobbes.bsky.social
This right here, this exact sentence, is THE problem in American political journalism.

The IRA *was* cheap energy and good jobs! That was the whole bill! Democrats did precisely what political pundits are telling them to do and the pundits just ignore it.
the party now cared more about climate change and various academic fixations than cheap energy and good-paying jobs.
November 1, 2025 at 12:13 PM
cleantechinv.bsky.social
Standing?
October 22, 2025 at 12:17 PM
Reposted by Rob Day
kevinjkircher.com
Methane from US oil and gas infrastructure causes more climate change than the entire US buildings and agriculture sectors. It has surged since ~2007 when the fracking boom began. Nations who are considering importing US natural gas should think carefully about its underestimated climate impacts.
kevinjkircher.com Kevin J. Kircher @kevinjkircher.com · Jun 30
New paper. I wish this wasn't the case, but most progress on reducing US greenhouse gas emissions is likely spurious. Why? EPA underestimates methane emissions from oil and gas. Relevant today as Repubs vote to gut IRA's methane monitoring/mitigation program. 🧵

authors.elsevier.com/a/1lL4K_6se4...
Two graphs from the paper. The left graph shows US net greenhouse gas emissions from 1990 to 2022. The official EPA estimates decline fairly steadily from 6.6 gigatonnes per year in 2005 to 5.5 in 2022 (17% below 2005 levels), largely reflecting natural gas displacing coal for electricity generation. The adjusted estimates, which reflect independent measurements of methane emissions from oil and gas infrastructure, end at 6.3 gigatonnes per year in 2022 (only 5% below 2005 levels). The right graph shows 2022 emissions increasing linearly with the assumed global warming potential of methane. Climate scientists are divided on whether to use the 100-year GWP, 20-year GWP, or something in between. With methane warming impacts assessed via the 20-year GWP, the central 2022 emissions estimate is 7.9 gigatonnes per year - 20% *above* the EPA's official 2005 estimate. Caption: Figure 1: Left: United States net greenhouse gas emissions over time. Right: Scaling of 2022 net emissions with methane’s GWP. After adjustment to reflect recent measurements of methane emissions from natural gas infrastructure, United States net emissions remain nearly as high as their 2005 level.
September 28, 2025 at 11:50 AM
cleantechinv.bsky.social
All NFL fans would support that, and we all need this reminder right now. All of us.
September 14, 2025 at 1:43 PM