John Bistline

@bistline.bsky.social

Head of Science at Watershed | Energy systems modeling, economics, policy | IPCC, NCA, Stanford/CMU alum | Views my own

Breezewood’s drone shot has been the internet’s go-to symbol of car dependent hellscape for over a decade. Standing here in person: it’s a Sheetz surrounded by an actual forest.

BildBild

One AI chatbot prompt: less than 1% of a phone charge. One agentic AI workflow: enough to microwave a burrito for half an hour (please don't). Same "AI" but five orders of magnitude apart.

Bild

A global shift to healthy diets would shrink agricultural land by 274 million hectares by 2050. This would be the single largest contraction in over 2,000 years, bigger than the drop after Rome’s collapse or the Black Death combined.

Bild

For the same company with the same AI usage, one measurement method says 54 tons of CO2e, while another says 3. Both are “correct, which is the problem with how AI emissions get counted right now.

Bild

Two AI systems can do the same task with a ~30x difference in electricity use. Many companies have no idea which one they're running. Our new open framework for measuring corporate AI emissions... and actually acting on them. 🧵

Bild

Insane paper: a Spanish city’s prayers for rain predicted actual rainfall for 200 years. Turns out it’s just drought hazard curves, the same math that tells you a heat wave is more likely to break the longer it runs.

Bild

Ask three sources what a single AI query emits, and you'll get answers that span orders of magnitude. Sustainability teams are being asked to account for AI emissions with no accepted way to do it. Tomorrow, we publish a framework to fix that.

Nolan used an exactingly detailed ship, sailed it across Europe, then brought a replica to the same tank where they faked a T-Rex swimming. Practical effects snobbery has a ceiling, and that ceiling is Universal City.

Bild

Cherry picking a single hour on a fossil-heavy grid to make a point is as meaningless as cherry picking a single hour on a high-renewables one. A full year builds a better mental model of how a grid actually runs than any one hour.

BildBild

Right now millions on the East Coast are getting a preview of what breathing bad air feels like. A new study looks at who breathes it by design. Net-zero pathways with more carbon removal leave ~30,000 more Americans dying from PM2.5 in 2050, concentrated in lower-income places.

Bild

Jevons strikes again: new paper on 30,000+ Chinese firms shows that adopting AI cuts a company’s carbon intensity 6.8% on average. Rebound effect eats 70% of it, so actual emissions only fall 2%.

Bild

Every corporate sustainability team is asking the same question: How do you measure AI’s carbon footprint? Spent months on this with AI providers and academic collaborators. Walking through an open accounting framework on July 23, live.

Bild

Gas prices jumped from $3.00 to $4.50 a gallon this year. Americans responded by buying more hybrids, not more EVs. New RFF analysis on why the “obvious” substitution didn’t happen.

Bild

Corporate clean power buying fell in 2025 for the first time in a decade. Our customers at Watershed went the other direction: $500M and counting, funded by pooling demand from companies too small to do these deals alone.

Bild

Housing costs rose $6,220/year since 2019. Electricity rose $480. Yet electricity is the one households keep hearing about. New LBNL data from Ryan Wiser’s team: electricity is 2.5% of the total increase in what Americans spend each year.

Bild

EVs are the marquee climate subsidy. They also have one of the lowest returns per dollar spent. New MVPF analysis: wind production tax credits deliver $5.87 in social benefit per $1 spent. Residential solar: $3.86. EV subsidies: $1.45.

Bild

Forget heat pumps. California’s central coast solved building energy use by being next to cold ocean water. Almost zero heating demand and almost zero cooling demand all year. Gotta upzone Big Sur.

BildBild

The federal government is now paying utilities to keep coal plants open past retirement. This paper’s evidence says the people living near those plants are the ones paying twice: once in their utility bill, once by moving away from the pollution.

Bild

New MIT modeling: Over two-thirds of the clean electricity generation and emissions cuts under Biden’s climate law could survive under Trump’s rewrite moving forward. But falling costs aren’t a guarantee of future progress: permitting, fuel costs, and demand all matter.

Bild