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Jeremiah Johnson

@jxjohnson.bsky.social
2.5K followers 530 following 63 posts

Decarbonization, energy systems, life cycle assessment • Prof at NC State • KIETS Climate Leaders Program Senior Faculty Fellow • (Former) Author for National Climate Assessment 6

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Reposted by Jeremiah Johnson
Joe DeCarolis @jfdecarolis.bsky.social · 21/05/2026
🔌💡 New paper alert: Surging data center and cryptocurrency demand could spike regional electricity costs up to 57% and push U.S. power sector CO₂ emissions up 28% by 2030. iopscience.iop.org/article/10.1... A thread on what we found 🧵👇
iopscience.iop.org
Power system costs and emissions from data center and cryptocurrency mining expansion in the United States
Power system costs and emissions from data center and cryptocurrency mining expansion in the United States, Johnson, Jeremiah X., Wade, Cameron, Blackhurst, Michael, Decarolis, Joseph F, De Queiroz, Anderson R, Posen, I Daniel, Jaramillo, Paulina
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Jeremiah Johnson @jxjohnson.bsky.social · 20/05/2026
fortune.com/2026/05/19/d...
fortune.com
Americans’ AI hate wave might just be gathering steam: Data centers could hike power costs in some states over 50% by 2030 | Fortune
New research puts numbers on how the AI infrastructure boom is coming for utility bills.
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Jeremiah Johnson @jxjohnson.bsky.social · 19/05/2026
Thanks for the review and analysis of our study! @jfdecarolis.bsky.social @paulijllo.bsky.social @danielposen.bsky.social @clameron.bsky.social
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Reposted by Jeremiah Johnson
Ketan Joshi @ketanjoshi.co · 19/05/2026
Bitcoin + AI will drive data centre growth in the US such that in every scenario in this study, power prices and total emissions increase substantially (even when you resurrect Biden-era clean tech policies or assume expensive gas) news.ncsu.edu/2026/05/data... iopscience.iop.org/article/10.1...
a chart showing change in prower prices and emissions in diff scenarios
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Reposted by Jeremiah Johnson
Kate Marvel @drkatemarvel.bsky.social · 10/12/2025
How much of the observed global warming was caused by humans? Science's best estimate: ALL OF IT
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Jeremiah Johnson @jxjohnson.bsky.social · 12/07/2025
20 calories of water, obviously
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Reposted by Jeremiah Johnson
David Wessel @davidmwessel.bsky.social · 18/06/2025
We've made an interactive map with data US Treasury collected that shows at the ZIP code level for 2018-2022 what US homeowners paid for insurance, what % of policies weren't renewed, and more. @brookings.edu Hutchins Center. www.brookings.edu/articles/hom...
brookings.edu
Homeowners insurance in an era of climate change
The U.S. Treasury data shows homeowners insurance is becoming more costly and harder to procure in light of climate change.
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Jeremiah Johnson @jxjohnson.bsky.social · 18/06/2025
Fascinating interactive. Thanks. My premiums shot up 43% this year (Raleigh, NC), after hikes of 20% and 24% the past two years. Home insurance premiums may be one of the most direct ways that many Americans experience the impacts of climate change that has already occurred.
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Jeremiah Johnson @jxjohnson.bsky.social · 11/06/2025
At 50% above the necessary volume.
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Reposted by Jeremiah Johnson
Kelly Hereid @kellyhereid.bsky.social · 30/05/2025
This new state-led energy system modeling paper by @gmmouat.bsky.social @katiehjordan.bsky.social @paulijllo.bsky.social @jxjohnson.bsky.social is incredible, I literally want to sit down and have a cup of coffee with every figure. Let's take a tour shall we ☕? 1/🧵 HT @kevinjkircher.com
nature.com
State-led climate action can cut emissions at near-federal costs but favors different technologies - Nature Communications
In the absence of federal decarbonization, states can drive significant greenhouse gas emissions reductions at comparable costs to federal action, with particular reliance on electrification of end us...
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Jeremiah Johnson @jxjohnson.bsky.social · 30/05/2025
Thanks for sharing your thoughts on this!
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Jeremiah Johnson @jxjohnson.bsky.social · 30/05/2025
Wrong person tagged! That’s not my timeline.
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Jeremiah Johnson @jxjohnson.bsky.social · 30/05/2025
🤣 thanks for sharing this!
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Reposted by Jeremiah Johnson
EnergyAbe @energyabe.bsky.social · 29/05/2025
🚨Job Alert🚨Johns Hopkins' Sustainable Energy Institute is hiring a fellow/post-doc (PhD, JD or equivalent experience) to support our work on interregional transmission, state engagement, and offshore wind planning! #energysky Details & application available: apply.interfolio.com/168478
apply.interfolio.com
Apply - Interfolio {{$ctrl.$state.data.pageTitle}} - Apply - Interfolio
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Jeremiah Johnson @jxjohnson.bsky.social · 28/05/2025
Lead author @gmmouat.bsky.social is on BlueSky! Follow this guy, post haste.
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Jeremiah Johnson @jxjohnson.bsky.social · 27/05/2025
Cc: @paulijllo.bsky.social @katiehjordan.bsky.social @natcomms.nature.com
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Jeremiah Johnson @jxjohnson.bsky.social · 27/05/2025
Both scenarios get us half way to net-zero and result in little difference in overall energy system cost (only +0.7% to pursue State Action). Even with little expectation of federal climate action in the near-term, states can still achieve substantial and cost-effective emissions cuts.
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Jeremiah Johnson @jxjohnson.bsky.social · 27/05/2025
So emissions sneaking across borders can undercut state-level climate action. In the absence of federal leadership, net-zero states will need to consider the embedded carbon of their electricity and biofuel imports.
media.tenor.com
a person is opening a box of milky way
ALT: a person is opening a box of milky way
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Jeremiah Johnson @jxjohnson.bsky.social · 27/05/2025
Transmission and interregional trade can lead to leakage. Under State Action, the North Central region imports fossil-based electricity from the unconstrained Central region. But under State Action, California increases electricity imports from the Southwest and spurs out-of-region renewables.
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Jeremiah Johnson @jxjohnson.bsky.social · 27/05/2025
State-led action = more electrification. Under State Action, we see more EVs, heat pumps, and electrified industry in participating states, requiring +900 TWh/year over National Action. But non-participating states retain a fair amount of natural gas and coal generation without a federal cap.
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Jeremiah Johnson @jxjohnson.bsky.social · 27/05/2025
We modeled two scenarios using Temoa: • State Action: net-zero by 2050 in 23 politically-willing states • National Action: same CO₂-eq reduction but achieved with a nationwide cap Both reduce emissions 46% by 2050, but with very different tech pathways.
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Jeremiah Johnson @jxjohnson.bsky.social · 27/05/2025
New in Nature Communications: "State-led climate action can cut emissions at near-federal costs but favors different technologies" We used an open-source energy system optimization model to explore what happens if 23 U.S. states pursue net-zero without federal coordination. 📄 doi.org/10.1038/s414...
doi.org
State-led climate action can cut emissions at near-federal costs but favors different technologies - Nature Communications
In the absence of federal decarbonization, states can drive significant greenhouse gas emissions reductions at comparable costs to federal action, with particular reliance on electrification of end us...
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Reposted by Jeremiah Johnson
Chris McDermott @chrismcdermott.bsky.social · 22/05/2025
“Given that there is little expectation the Trump administration will promote a national effort to reduce greenhouse gas emissions to address climate change, we think there is significant value in assessing what kind of difference state-led efforts could make.” @jxjohnson.bsky.social
ecowatch.com
States Can Take Meaningful Climate Action, Even Without Federal Support: Study - EcoWatch
State action to reduce carbon emissions and address climate change can make a big difference, even without a strong federal climate strategy.
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Reposted by Jeremiah Johnson
John Bistline @bistline.bsky.social · 14/05/2025
🚨 NEW PAPER 🚨 In the largest multi-model study of U.S. decarbonization strategies to date, we explore technology and policy implications for reaching net-zero emissions using 14 energy-economic models. A thread of key takeaways in 10 charts...
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Jeremiah Johnson @jxjohnson.bsky.social · 14/05/2025
Winter peaking of power systems would change planning and operations. Former PhD student Adi Keskar wrote a great paper on this topic a couple of years ago. www.sciencedirect.com/science/arti...
sciencedirect.com
Planning for winter peaking power systems in the United States
Most regions in the United States experience peak electricity demand during the summer months. Several regions, however, are dual peaking with distinc…
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Reposted by Jeremiah Johnson
Costa Samaras @costasamaras.com · 02/05/2025
Last week, the govt dismissed 400 researchers working on the US National Climate Assessment. I was one of them. Today, @agu.org & @ametsoc.org announced they are joining forces to sustain the momentum. It's not a replacement, it's a reminder that science is unstoppable. news.agu.org/press-releas...
news.agu.org
AGU and AMS join forces on special collection to maintain momentum of research supporting the U.S. National Climate assessment
Congressionally mandated, the NCA draws on the latest scientific research to evaluate how climate change is affecting the United States. The new special collection does not replace the NCA but instead...
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Jeremiah Johnson @jxjohnson.bsky.social · 14/04/2025
cc: @iopp-environment.bsky.social
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Jeremiah Johnson @jxjohnson.bsky.social · 11/04/2025
I feel like this headline should be from 2010. From my experience, nuclear is not remotely controversial with most current college students.
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Jeremiah Johnson @jxjohnson.bsky.social · 05/03/2025
The paper offers much more detail into the technology choices and system-wide abatement costs. Check it out! Thanks to @sloanfoundation.bsky.social, Environmental Research: Energy @ioppublishing.bsky.social, and collaborators (@paulijllo.bsky.social @clameron.bsky.social @katiehjordan.bsky.social)
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Jeremiah Johnson @jxjohnson.bsky.social · 05/03/2025
Electrification (think heat pumps and EVs) decisions were optimized within the model and varied based on carbon cost. At $400/t—sufficient to achieve net-zero emissions by 2050—U.S. electricity generation more than doubles compared to today to most cost-effectively reduce emissions.
Graph showing power generation under different CO2 costs. Higher CO2 costs result in more overall generation, dominated by solar and wind power.
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Jeremiah Johnson @jxjohnson.bsky.social · 05/03/2025
Our marginal abatement cost curves reinforce this message. Emissions abatement is increasingly costly as the energy system decarbonizes. But, as technologies improve, there is greater opportunity for cost reductions in future years, resulting in more emissions reductions at comparable costs.
Graphs showing marginal abatement costs of CO2 in US. The curve are concave up, with higher abatement yielding disproportionally higher costs.
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Jeremiah Johnson @jxjohnson.bsky.social · 05/03/2025
As we know, getting to net-zero is tough. We find that this occurs at costs near $400/t, and displacing those last emissions from industry, aviation, and buildings requires higher-cost carbon management solutions including like direct air capture.
media.tenor.com
a man is riding on the wing of a small airplane with the number l-720 on the tail
Alt: A man is riding on the wing of a small airplane with the number l-720 on the tail
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Jeremiah Johnson @jxjohnson.bsky.social · 05/03/2025
Here are CO2eq emissions under discrete carbon costs. $40/t cuts emissions 36% with more wind and solar, and some electrified space heating and transportation. $100/t gets a 63% drop, near elimination of coal, substantial reductions in the industrial sector, and more widespread electrification.
Multi-panel chart showing CO2-eq emissions trajectories over time, under different costs of CO2.
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Jeremiah Johnson @jxjohnson.bsky.social · 05/03/2025
Systems thinkers know that "you can't just do one thing." The abatement cost of swapping gasoline for an EV is impacted by other mitigation measures like solar adoption. In our new pub, an energy systems model captured such interactive effects to estimate marginal CO2 abatement cost in the US.
iopscience.iop.org
Marginal abatement costs for greenhouse gas emissions in the United States using an energy systems approach - IOPscienceSearch
Marginal abatement costs for greenhouse gas emissions in the United States using an energy systems approach, Blackhurst, Michael, Venkatesh, Aranya, Sinha, Aditya, Jordan, Katherine, Muller, Nicholas Z, Wade, Cameron, Johnson, Jeremiah X, Jaramillo, Paulina
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Jeremiah Johnson @jxjohnson.bsky.social · 28/01/2025
Has it gotten to the point where we’re counting on Tillis to represent his constituents? Oh my.
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Reposted by Jeremiah Johnson
Streetsblog NYC @nyc.streetsblog.org · 23/01/2025
NEW: There's been a 51-percent drop in injuries an a 55-percent drop in crashes year-over-year within the congestion relief zone in just the first 12 days of the program. nyc.streetsblog.org/2025/01/23/c...
nyc.streetsblog.org
Congestion Relief Zone is Also a CRASH Relief Zone: Data - Streetsblog New York City
Congestion pricing critics will have one less reason to say the toll isn't working
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Jeremiah Johnson @jxjohnson.bsky.social · 23/01/2025
As cold weather pummels us here in the South, power systems are strained. If you’re looking for something that provides the status, risks, and policies that may influence winter peaking power systems, check out my former PhD student Adi Keskar’s paper.
sciencedirect.com
Planning for winter peaking power systems in the United States
Most regions in the United States experience peak electricity demand during the summer months. Several regions, however, are dual peaking with distinc…
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Jeremiah Johnson @jxjohnson.bsky.social · 14/12/2024
go.bsky.app/Ji7z8yc Trying to link up and create visibility for AEESP (Association of Environmental Engineering and Science Professors) members. Reply if you’d like to be added! Abstract deadline for our spring conference is Jan 6: aeesp2025.duke.edu
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Jeremiah Johnson @jxjohnson.bsky.social · 04/12/2024
Just looking for a Dunkin
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Jeremiah Johnson @jxjohnson.bsky.social · 29/11/2024
Woo-hoo! Congrats!
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Reposted by Jeremiah Johnson
Jeremiah Johnson @jxjohnson.bsky.social · 17/09/2024
There is a wide array of future technology choices that allow us to achieve a net-zero energy system at *near* optimal cost. ⏰ New Paper in Nature Comms with colleagues at NC State and Carnegie Mellon where we use modeling to generate alternatives in an energy system optimization model. ⏰
nature.com
Diverse decarbonization pathways under near cost-optimal futures
Nature Communications - This study identifies near cost-optimal paths to net-zero emissions by 2050 in the U.S. It identifies four classes: essential, reduced, emerging, and rarely used, offering...
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Reposted by Jeremiah Johnson
Costa Samaras @costasamaras.com · 15/11/2024
If you're an author or technical contributor on the 6th U.S. National Climate Assessment and would like to be included in this starter pack, reply with your chapter or DM me. I'm very grateful to be part of this. go.bsky.app/EZeELH7
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Jeremiah Johnson @jxjohnson.bsky.social · 16/11/2024
Good man.
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Jeremiah Johnson @jxjohnson.bsky.social · 16/11/2024
Sign me up. I’m an author in the energy chapter. Thanks for doing this
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Reposted by Jeremiah Johnson
Tyler Norris @tnorris.bsky.social · 11/11/2024
9 energy-climate starter packs: 1)Power go.bsky.app/RwCBCab 2)Media go.bsky.app/2TNd1Ya 3)Solutions go.bsky.app/Aa1sErQ 4)Science go.bsky.app/7Mbnoge 5)Legal go.bsky.app/R4ZUdPE 6)Women go.bsky.app/AGCURBf 7)Nuclear go.bsky.app/5EJY58V 8)EVs go.bsky.app/R4ZUdPE 9)Southeast go.bsky.app/AZ6Xw1U
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Jeremiah Johnson @jxjohnson.bsky.social · 17/09/2024
In a nutshell, there are a lot of ways that we can do this right and get to net-zero emissions by 2050, but current policy alone will not get us there. Who is ready for IRA 2.0?
media.tenor.com
a person is standing in a field with a wind turbine in the background
ALT: a person is standing in a field with a wind turbine in the background
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Jeremiah Johnson @jxjohnson.bsky.social · 17/09/2024
We found the greatest range of outcomes related to carbon management. For example, in some cases, direct air capture was scarcely used before 2050, while in other cases it provided substantial share of the CO2 mitigation.
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Jeremiah Johnson @jxjohnson.bsky.social · 17/09/2024
Because we endogenize end-use technology selection, we are able to explore the range of future electricity demand and rates of electrification. In all near-cost-optimal cases, we see substantial expansion of the power sector.
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Jeremiah Johnson @jxjohnson.bsky.social · 17/09/2024
Natural gas use in 2050, though, could vary anywhere from near zero use to current levels of consumption, with most of the range occurring in the industrial sector and the potential use in direct air capture.
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Jeremiah Johnson @jxjohnson.bsky.social · 17/09/2024
We see some commonalities across the 1,100 near-cost-optimal net-zero futures. No surprises: we’re going to need to build a lot of solar and wind, and burn very little coal and oil.
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