Jonathan G. Koomey, Ph.D.

Our new article in Joule on data needs for understanding AI electricity use came out online today in Joule (link will be good until October 8, 2024). Here’s the summary section: > As the ...

https://www.koomey.com/post/759261185032028160

My friend and colleague Danny Cullenward and I were on KQED Forum this morning, talking about the environmental impacts of our digital lives . Lesley McClurg was the host. You shouldn’t wor...

https://www.koomey.com/post/755739634823315456

The frenzy over new projections of electricity growth continues to escalate. This excellent episode of the Energy Transition Show is the best counterweight to that crisis mentality that I’ve f...

https://www.koomey.com/post/753638754352234496

I worked with a stellar team of the world’s top experts on computing’s effect on energy and emissions to craft this commentary for Nature , which came out today (April 22, 2024): > Luers,�...

https://www.koomey.com/post/748478566858178560

This conversation was a fun one. here’s the description: > Will the rise of machine learning and artificial intelligence break > the climate system? In recent months, utiliti...

https://www.koomey.com/post/747490484452311040

In 2011, we replaced lighting cans with LED inserts in our house, instantly reducing lighting energy use by 50% or more. The inserts looked like the ones on the left in the photos below. Recen...

https://www.koomey.com/post/731452889716932608

Every year since Chris Nelder started the Energy Transition Show, he’s interviewed me for the annual roundup episode, and this year is no exception. We discuss the proper role of government in ...

https://www.koomey.com/post/729009668031217664

I, along with colleagues at World Resources Institute and Koomey Analytics, just had a commentary published in WIRES Climate Change. It’s titled “Abandon the idea of an ‘optimal economic p...

https://www.koomey.com/post/723409743926984704

A quarter century ago, Arnulf Grübler published a book titled Technology and Global Change .  On June 19th and 20th, 2023, students and colleagues of Arnulf gathered at Oxford for a symposium...

https://www.koomey.com/post/721477954781216768

Ian Monroe and I talked with Allyson Klein at Tech Arena for her podcast about our book, Solving Climate Change: A Guide for Learners and Leaders. It’s a half hour conversation that covers m...

https://www.koomey.com/post/721432266753130496

On May 10, 2023, Ian Monroe and I gave a live webinar for the Institute of Physics (IOP) about our latest book, Solving Climate Change: A Guide for Learners and Leaders. The webinar is still pos...

https://www.koomey.com/post/718315549888839680

Solving Climate Change: A Guide for Learners and Leaders, was released in late December 2022. The publisher, IOP, recently made if freely downloadable through May 21, 2023, so get it while it’s...

https://www.koomey.com/post/717407985410965504

My talk on February 9, 2023 for the Salinas Rotary club is an expansion of points made in a commentary article by me and Professor Eric Masanet , UCSB, in Joule in 2021: > Koomey, J., & M...

https://www.koomey.com/post/709360975817719808

The peer-reviewed journal Energy Efficiency just published our commentary about networked standby power and the need for product-specific government industry interactions when setting voluntary ...

https://www.koomey.com/post/707363875520167936

Our latest book was just released online today by IOP Publishing (The Institute of Physics). It’s called Solving Climate Change: A Guide for Learners and Leaders .  The publisher’s page f...

https://www.koomey.com/post/704362229941829632

Our latest article on scenario decomposition tools came out in Environmental Modeling and Software in September 2022: > Koomey, Jonathan, Zachary Schmidt, Karl Hausker, and Dan Lashof...

https://www.koomey.com/post/701021080453857280

Regular readers know that I’ve studied the history of computing for a very long time. About four years ago (November 17, 2017) I had the good fortune to visit Bletchley Park and the UK’s Na...

https://www.koomey.com/post/670564790101524480

I and Professor Eric Masanet of UC Santa Barbara have a new commentary article out today in the refereed journal Joule . It explores four common pitfalls that cause researchers and commentators...

https://www.koomey.com/post/654896139332616192

My keynote talk today for the iTherm 2021 technical conference is an expansion of points made in a commentary article by me and Professor Eric Masanet , UCSB, which is “in press” at Joule ...

https://www.koomey.com/post/652805139647840256

My talk was titled “Information and communications technology (ICT) and the energy/climate transition”, and I presented it today (November 24, 2020) at the 3rd Vienna Energy Strategy Dialogu...

https://www.koomey.com/post/635686216345468928