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Edgar Virgüez R, Ph.D.

@edgarvirguezr.bsky.social
6.5K followers 498 following 14 posts

Energy systems engineer and geographer. Decarbonization. Educator. Board Member. Global South. Husband, two-time dad, Latino. Research Engineer at the Energy Science and Engineering Department at Stanford University. Ph.D. & M.A. from Duke University.

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Reposted by Edgar Virgüez R, Ph.D.
John Bistline @bistline.bsky.social · 08/12/2025
We love to say "costs fall X% every time capacity doubles." This paper looks at 87 technologies and says: actually, no. Past learning rates are not reliable predictors of future learning.
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Reposted by Edgar Virgüez R, Ph.D.
IOPP Environment and Energy @iopp-environment.bsky.social · 23/10/2025
Publishing is a part of the academic language. @edgarvirguezr.bsky.social (Duke university), Executive Editor of Environmental Research: Energy #EREN gives his insight on overcoming barriers and understanding the publishing process. Read more: publishingsupport.iopscience.iop.org/early-career...
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Reposted by Edgar Virgüez R, Ph.D.
Ken Caldeira @kencaldeira.com · 14/02/2025
It was super-fun to work with Alissa Ganter on this paper. Substantial amounts of potential wind and solar generation is being curtailed in Europe. This generation capacity could potentially be used to make hydrogen, substituting for hydrogen now made with fossil gas. pubs.acs.org/doi/full/10....
pubs.acs.org
Utilizing Curtailed Wind and Solar Power to Scale Up Electrolytic Hydrogen Production in Europe
The growth of European wind and solar power capacity is associated with increasing electricity curtailment to manage excess generation and ensure safe network operations. Instead, this surplus electri...
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Edgar Virgüez R, Ph.D. @edgarvirguezr.bsky.social · 06/02/2025
We are organizing a meeting where a small group will discuss contrasting viewpoints, identify reasons for disagreement, and explore how much of that disagreement is due to differences in empirical beliefs, decision-making frameworks, or values. If you have any suggestions, please reply to the post.
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Reposted by Edgar Virgüez R, Ph.D.
Juan Moreno-Cruz @jmorenocruz.bsky.social · 06/02/2025
As Ken explains below, we are organizing a meeting where a small group will discuss contrasting viewpoints, identify reasons for disagreement, and explore whether or how much of that disagreement is due to differences in empirical beliefs, decision-making frameworks, or values.
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Edgar Virgüez R, Ph.D. @edgarvirguezr.bsky.social · 30/01/2025
A fascinating thread examining the internal perspective at a high-profile journal, Science, which addresses some of the common narratives and myths surrounding the publishing world. Thanks, @jeremymberg.bsky.social for your openness and transparency.
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Reposted by Edgar Virgüez R, Ph.D.
Ken Caldeira @kencaldeira.com · 27/01/2025
If you are interested in a Stanford postdoc position in these areas, and like doing stylized studies, please contact me. I value skills and a track record of achievement more than domain knowledge, and have had great success working with physicists. scholar.google.com/citations?hl...
scholar.google.com
Ken Caldeira
‪Carnegie Insitution for Science, Dept. of Global Ecology‬ - ‪‪Cited by 58,529‬‬ - ‪climate‬ - ‪biogeochemical cycles‬ - ‪energy / environment‬ - ‪ocean acidification‬
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Reposted by Edgar Virgüez R, Ph.D.
Ken Caldeira @kencaldeira.com · 25/01/2025
We did our most important coral work at One Tree Island. It has been one of the best protected reefs in the Great Barrier Reef. www.nature.com/articles/nat... www.nature.com/articles/nat... agupubs.onlinelibrary.wiley.com/doi/10.1029/...
nature.com
Reversal of ocean acidification enhances net coral reef calcification - Nature
A manipulative experiment in which a reef is alkalinized in situ shows that calcification rates are likely to be lower already than they were in pre-industrial times because of acidification.
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Reposted by Edgar Virgüez R, Ph.D.
Ken Caldeira @kencaldeira.com · 13/01/2025
We reduce emissions to reduce long-term damage from climate change. We adapt to reduce near-term damage from climate change. New open access paper discussing how emissions mitigation and climate adaptation are complementary approaches to reducing climate damage: www.nature.com/articles/s43...
Chart showing timescale for return on investment in emissions abatement is on the order of a century whereas the timescale for return on investment in adaptation is about a decade or two.
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Reposted by Edgar Virgüez R, Ph.D.
Ken Caldeira @kencaldeira.com · 25/12/2024
The 1/6 of the world's population living in Africa lives on less than 1/40 of the world's income. (The 1.3 billion people living in Africa are represented by the green area in the upper left of this figure. The United States has about 1/4 of this population.) www.voronoiapp.com/economy/-How...
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Reposted by Edgar Virgüez R, Ph.D.
Ken Caldeira @kencaldeira.com · 16/12/2024
Thanks, @paulijllo.bsky.social, for giving us a nice tour of her workplace, the US Capitol Building. Paulina is going to have a front row seat to a lot of crazy that is about to happen. With Emily Zuetell, @lfreese.bsky.social , @edgarvirguezr.bsky.social, and @jadowling.bsky.social
Photo of Paulina Jaramillo, Emily Zuetell, Lyssa Freese, Edgar Virguez, Jackie Dowling, and Ken Caldeira in the US Capitol Building.
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Reposted by Edgar Virgüez R, Ph.D.
Jacqueline A. Dowling @jadowling.bsky.social · 05/12/2024
Excited to present our energy storage portfolios paper at AGU in D.C. on Monday! #EnergySky Paper: pubs.acs.org/doi/10.1021/... Research Brief: img1.wsimg.com/blobby/go/65... With my mentee Anna X. Li now a PhD student at Princeton, @edgarvirguezr.bsky.social, @kencaldeira.bsky.social, & more!
pubs.acs.org
The Influence of Regional Geophysical Resource Variability on the Value of Single- and Multistorage Technology Portfolios
A stylized macro-scale energy model of least-cost electricity systems relying only on wind and solar generation was used to assess the value of different storage technologies, individually and combine...
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Edgar Virgüez R, Ph.D. @edgarvirguezr.bsky.social · 18/11/2024
"We need to do hard work to bring the climate impact of our modern economy down to zero. But while we are trying to do the hard stuff, we can also grab some low-hanging fruit — no matter how high in the sky it may be."
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Reposted by Edgar Virgüez R, Ph.D.
Tyler Norris @tnorris.bsky.social · 18/11/2024
🧵 How did Texas interconnect ~70% more capacity than any US market btwn 2021-2023? The answer explains, in part, why 25 parties just filed w/ FERC supporting streamlined interconnection service (ERIS), with no clear opposition—signaling a promising area for bipartisan reform. (1/15) #EnergySky
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Reposted by Edgar Virgüez R, Ph.D.
Jenny Chase @solarchase.bsky.social · 13/11/2024
This is a useful summary (though the main factor determining PV generation is still just... how sunny it is, and the figure of 6-20% module efficiency is from 2015 and is now more like 20-23% for modern crystalline silicon modules).
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Reposted by Edgar Virgüez R, Ph.D.
Pierre Friedlingstein @pfriedling.bsky.social · 13/11/2024
The global carbon budget 2024 is out
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Reposted by Edgar Virgüez R, Ph.D.
Ben Serrurier @serrurier.bsky.social · 12/11/2024
Huge shoutout to @timlatimer.bsky.social and @jessejenkins.bsky.social for landing on the Time Climate 100! time.com/collection/t...
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Reposted by Edgar Virgüez R, Ph.D.
Costa Samaras @costasamaras.com · 12/11/2024
See y’all today. Summary of my presentation/career: we don’t know anything but we can still act
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Reposted by Edgar Virgüez R, Ph.D.
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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Reposted by Edgar Virgüez R, Ph.D.
Tyler Norris @tnorris.bsky.social · 09/11/2024
Here's a starter pack for electric grid & power systems - lmk if you want me to add your account! (Omissions 100% unintentional, still finding folks here :-) 🔌💡 go.bsky.app/RwCBCab
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Reposted by Edgar Virgüez R, Ph.D.
Nicola Davies @nicoladavies.bsky.social · 15/10/2024
🙋Does your research focus on decarbonisation in the Global South? If so, consider submitting to Environmental Research: Energy's latest focus issue iopscience.iop.org/collections/... Led by @edgarvirguezr.bsky.social, June Lukuyu, Krishnapriya Perumbillissery, Myriam Shiran
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Ken Caldeira @kencaldeira.com · 25/09/2024
Designing reliable and cost-efficient wind-and-solar-based electricity systems requires more weather years for analysis than are customarily used. Research Brief: climateenergylab.org/researchbrie... Underlying Paper: www.sciencedirect.com/science/arti...
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Edgar Virgüez R, Ph.D. @edgarvirguezr.bsky.social · 17/09/2024
Check out our latest paper!
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Reposted by Edgar Virgüez R, Ph.D.
Ken Caldeira @kencaldeira.com · 09/08/2024
Research Brief: "Switching from CO2-emitting oil to carbon-neutral wind and solar can reduce electricity costs on islands" #climate #energy climateenergylab.org/researchbrie... www.sciencedirect.com/science/arti...
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Edgar Virgüez R, Ph.D. @edgarvirguezr.bsky.social · 22/07/2024
Check out our latest paper. Key findings: - Curtailed power may provide opportunities for low-efficiency H2 storage systems - Underground H2 storage may provide value in deeply decarbonized systems - Existing underground gas storage facilities may provide ample H2 energy storage at a national scale
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Reposted by Edgar Virgüez R, Ph.D.
Ken Caldeira @kencaldeira.com · 20/07/2024
We are starting to create little 2-pagers describing key results of recent work. The first two are on long-duration storage in wind-and-solar-reliant electricity systems. climateenergylab.org/researchbrie...
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Edgar Virgüez R, Ph.D. @edgarvirguezr.bsky.social · 13/03/2024
“In our group, we like to do geophysical studies that are relevant to energy systems. We chose steady power because we wanted this to be a geophysically-oriented study focused on basic principles and methodology.” climateenergylab.org/people/
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Reposted by Edgar Virgüez R, Ph.D.
Ken Caldeira @kencaldeira.com · 13/03/2024
Where are the abundant and reliable winds? Please have a look at this blog post that explains our recent study. kencaldeira.com/2024/03/wher...
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Reposted by Edgar Virgüez R, Ph.D.
Alicia Wongel @aliciawongel.bsky.social · 01/03/2024
If you want to build and run a PyPSA (pypsa.org) network with little programming knowledge, give Table PyPSA a try! You can build the network from an Excel table, and it returns main outputs in an Excel table. Especially suitable for teaching and stylized analyses with limited network complexity.
github.com
GitHub - carnegie/table_pypsa: Build and run a PyPSA network from an Excel table; suitable for users with little programming experience
Build and run a PyPSA network from an Excel table; suitable for users with little programming experience - carnegie/table_pypsa
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Reposted by Edgar Virgüez R, Ph.D.
Ken Caldeira @kencaldeira.com · 08/12/2023
Electricity systems heavily reliant on wind and solar generation require firming technologies to reliably meet electricity demands. A new study by @aliciawongel.bsky.social indicates that a broad range of technologies could potentially play this firming role. findingspress.org/article/9039...
findingspress.org
Broad Range of Technologies Could Firm Up Wind and Solar Generation in Net Zero Carbon Dioxide Emiss...
By Alicia Wongel, Ken Caldeira. By sequentially removing the most valuable firming technology from cost-optimized wind-and-solar-reliant electricity systems, we demonstrate that reliable net-zero-CO2 ...
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Edgar Virgüez R, Ph.D. @edgarvirguezr.bsky.social · 07/12/2023
The Climate Energy Lab will participate at the 2023 Annual Meeting of the American Geophysical Union (AGU) with a delegation of 11 members, engaging in 18 events (10 posters, 5 oral talks, 2 panels, and 1 session chair). We hope you visit one of our talks or posters!
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Reposted by Edgar Virgüez R, Ph.D.
Ken Caldeira @kencaldeira.com · 01/12/2023
Some adaptation responses to flood risk. Move up, move over, build cheap. www.washingtonpost.com/climate-solu... iopscience.iop.org/article/10.1...
washingtonpost.com
An architect has found a way to build flood-proof homes
A star architect is building swaths of flood-resistant homes out of bamboo. What makes the material so “marvelous”?
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Reposted by Edgar Virgüez R, Ph.D.
Tyler Norris @tnorris.bsky.social · 27/11/2023
An early consensus appears to be emerging on next steps for US interconnection reform. The central dilemma is that existing US processes tilt heavily toward "deliverability," which results in inefficient use of grid. UtilityDive's @ethanhowl.bsky.social explores: www.utilitydive.com/news/connect...
utilitydive.com
Can ERCOT show the way to faster and cheaper grid interconnection?
With the "connect and manage" process, which doesn’t require network upgrades, the Electric Reliability Council of Texas brought 14.2 GW online in the last two years, more than any other grid operat...
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Greg Schivley @gschivley.bsky.social · 21/11/2023
Bumping to EnergySky
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