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Posts by Mark Z. Jacobson

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Does the world have enough lithium to power all the electric vehicles and stationary batteries needed to transition the world to 100% clean, renewable energy and storage for everything?

More info
pubs.usgs.gov/periodicals/...
web.stanford.edu/group/efmh/j...

Video
www.youtube.com/watch?v=XKBT...

16 hours ago 13 6 2 0
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As WindWaterSolar continues to displace fossils on CA's main grid, what is clear is that fossils are a temporary convenience, not a necessity.

Fossil gas down 60% in 2026 v 2023.

19 straight and 85 out of 109 (78%) days in 2026 with WWS meeting >100% of demand for part of the day.

1 day ago 52 22 2 2

Largest renewable project in U.S. history - 3.5 GW of wind in New Mexico - begins delivering power to California and Arizona.

@CaliforniaISO has taken operational control - will count as in-state wind

Will speed up California's push for 100% WindWaterSolar

www.eenews.net/articles/lar...

3 days ago 277 83 6 5
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Pennsylvania invests in geothermal energy as lawmakers move to regulate industry Pennsylvania is taking steps to expand geothermal energy, as lawmakers move to regulate the emerging industry and the Shapiro administration announces new feder

Pennsylvania has up to 750,000 of inactive oil and gas wells.

Now the state will use some of those wells to build a clean, renewable electricity source, enhanced geothermal.

wjactv.com/news/local/p...

More on EGS
web.stanford.edu/group/efmh/j...

3 days ago 69 18 4 2

Largest renewable project in U.S. history - 3.5 GW of wind in New Mexico - begins delivering power to California and Arizona.

@CaliforniaISO has taken operational control - will count as in-state wind

Will speed up California's push for 100% WindWaterSolar

www.eenews.net/articles/lar...

3 days ago 277 83 6 5
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Fossil gas use 60% lower in 2026 than in 2023 on the CaliforniaI SO grid

83 of 107 (78%) days and 17 straight in 2026 with WWS meeting >100% of demand for an average of 4 hr every day this year

51% of all demand met by WWS in 2026, 3x that of gas

Batteries up 324% and solar up 69% in 2026 v 2023

3 days ago 68 17 0 6
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New metric shows renewables are 53% cheaper than nuclear power A new metric for assessing total system costs puts a least-cost mix of offshore wind and solar at about €46 ($54.20)/MWh in a future climate-neutral energy system for Denmark. Researchers tell <b>pv ...

New metric shows renewables are 53% cheaper than nuclear power www.pv-magazine.com/2026/04/17/n... @nduic.bsky.social @brianvad.bsky.social @profstrachan.bsky.social @michael-sterner.bsky.social @jeroahola.bsky.social @drpauldorfman.bsky.social @aukehoekstra.bsky.social @mzjacobson.bsky.social

4 days ago 56 26 5 1
Maps — Offshore Wind California

Despite Trump, the U.S. will have 6 GW of offshore wind operating by 2027

All 5 developers have won court victories to complete their projects.

72% (4.3 GW) of the 6 GW are installed or operational

www.offshorewindca.org/maps

5 days ago 75 23 2 0

Firebrick storage powered by WindWaterSolar electricity has huge potential to replace fossil furnaces at low cost
web.stanford.edu/group/efmh/j...

A Scotland distillery claims a world first - it produces & stores 1,200C heat with low and 0 carbon electricity, not fossils
www.bbc.com/news/article...

5 days ago 14 7 1 0
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U.S. Grid-Scale Battery Production to Support 100% of Renewable Generating Capacity Domestic manufacturing of grid-scale battery storage systems now meets the needs of the nation’s ever-expanding wind and solar generating systems.

U.S. grid-battery production has gone from 0 in 2024 to 145 GWh/year by the end of 2026, enough to provide batteries to support all wind and solar in the U.S.

www.electronicdesign.com/technologies...

5 days ago 55 21 0 1

From April 2025 to 2026, CAISO installed

4.656 GW batteries
1.534 GW solar
0.308 GW wind

bringing totals to

16.04 GW/64.16 GWh batt
22.577 GW solar
8.681 GW wind

CAISO queue is

17.1 GW batt
19 GW sol
0.8 GW wind
0 bio, gas, nuc

This is why WWS will ultimately supply 100% of demand 24/7/365

5 days ago 23 7 1 1
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Commentary: New York should put a two-year moratorium on new nuclear power The governor's push for more nuclear goes against the recommendations of the Climate Action Council. It will raise energy prices further. And it's just too risky.

My op-ed in today's Albany Times Union: NY should not embrace nuclear power, as its too expensive and too slow to deploy. Renewable energy is available much faster, and at far less cost, and with less risk.
www.timesunion.com/opinion/arti...

6 days ago 41 18 2 2

Eliminating emissions of CO2 by 2050 (80% by 2030) reduces CO2 to 350 ppm by 2100 without your additional removals because the e-folding life of CO2 upon a decrease of CO2 is 90 years.

web.stanford.edu/group/efmh/j...

So, again, you are mistaken about your understanding.

6 days ago 3 0 1 0

You are not helping at all if you are pushing carbon removal. I am not trying to be mean, but this is my expertise (for 37 years) and it is not yours. If you want to help, focus on eliminating emissions.

6 days ago 2 0 0 0

The opposite.

Stopping 1 tonne of CO2 emissions eliminates 1 tonne from the air

Far easier, more efficient, less expensive to stop 1 tonne of emissions by replacing fossils with WWS than to remove 1 tonne.

As such, money spent removing 1 tonne instead of stopping emissions increases CO2

Period.

6 days ago 0 0 1 0

Issues with biochar:

-pyrolysis increases air pollution

www.mdpi.com/2071-1050/16...

-needs energy to gather waste
-needs equipment
-needs money with no return on investment

Probs increase with scale

Using same money to replace fossils with WWS avoids most issues, so biochar=opportunity cost

6 days ago 2 0 1 0
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Stories - The Bennett Institute

New Nuclear Is Too Late and Too Costly for the Climate Crisis. Dr Paul Dorfman, Bennett Scholar, makes a clear and evidence based case: new nuclear power cannot play a meaningful role in addressing the climate or energy crises.

bennettinstitutesussex.org/stories/nucl...

6 days ago 72 28 9 3
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WindWaterSolar met 73% of 24-hour demand and a peak of 139% of demand on 4/14 on the CAISO grid.

WWS has also met 50.5% of all 2026 demand, and it is not even summer.

14th day straight and 80th of 104 (77%) with >100% WWS.

Fossil gas down 60%, batteries up 324%, solar up 70% in '26 v '23.

6 days ago 19 3 0 1

And the US, for example, has >90,000 dams, but only 2,500 of these have hydro. Not sure why you don't focus on the 97% of dams without hydro.

1 week ago 1 0 1 0
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(a) Hydro already exists in over 150 countries and is the largest WWS source in many of those countries, (b) our plans do not call for growing hydro - just using existing hydro more efficiently, (c) geothermal is part of water. Water stays.

1 week ago 2 0 2 0

With the discovery of 30% more world lithium resources in one year, battery-electric vehicle and stationary battery storage prices should continue to drop rapidly, facilitating world electrification and the inevitable transition to 100% WindWaterSolar across all energy sectors.

1 week ago 28 9 3 0

Nope. That paper does not even analyze the issue let alone dispute our findings or even mention our findings. They do not look at the full system, which is necessary to analyze the issue.

1 week ago 2 0 0 0

New data: no shortage of lithium in the world for a 100% WWS transition.

USGS says known world Li resources increased 30% from 115.1 in 2024 to 150 million tons in 2025

Enough for 19 b BE cars (1.5 b cars+trucks in world now)

US now has most Li, 20% of world total

pubs.usgs.gov/periodicals/...

1 week ago 27 6 0 2

No-one has even disputed, let alone shown scientifically, in the peer-reviewed record, that our conclusions that CC/DAC increase CO2/air pollution/etc, due to opportunity costs, which are published in several papers, are incorrect, so I'm not sure who these "other scientists" you refer to are.

1 week ago 1 0 1 0
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This is why we use a combo of WindWaterSolar

Wind breaks new CAISO output record-when it is needed-at night-10:40PM 4/8: 6.699 GW

Ignoring batteries, WWS also met highest % 24-h demand YTD (69.1%)

Gas down 59.3%, solar up 74.5%, batteries up 329% '26 v '23

74 of 98 days (75.5%) '26 with>100% WWS

1 week ago 30 13 0 3

Natural CC = reducing deforestation, increasing reforestation (planting trees). Also includes using land for more carbon intense purposes. Everything else is synthetic (e.g., if it involves equipment / energy it is synthetic).

1 week ago 1 0 1 0

Phoenix seems to do bioenergy with carbon capture, which only increases CO2 and air pollution and pipelines and saddles consumers with tens of $billions in costs for decades. Greenwashing.

web.stanford.edu/group/efmh/j...

1 week ago 1 0 2 0

Why Public Banks Should Not Support Nuclear Power

New 10-author report

www.urgewald.org/sites/defaul... @drpauldorfman.bsky.social @ckemfert.bsky.social

1 week ago 10 3 1 2
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Breaking: Microsoft Pauses All Carbon Removal Purchases Tech giant Microsoft has been communicating with partners and suppliers this week that it plans to pause buying new carbon removal credits.

Breaking: Microsoft Pauses Greenwashing Scheme (Carbon Removal Purchases)

carbonherald.com/microsoft-pa...

1 week ago 53 22 1 3

No net CO2 has been removed from the atmosphere by any synthetic CDR method, ever

All CC, DAC increase CO2, air pollution & fossil mining and infrastructure, & costs because, even in the best case of using RE to power them, that RE can no longer displace more CO2.

web.stanford.edu/group/efmh/j...

1 week ago 2 0 1 0