Mark Z. Jacobson

Mark Z. Jacobson

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Stanford professor of civil & environmental engineering; researches air pollution, climate, and 100% clean/renewable energy systems, posts on grids and storage.

Renewables Shatter Records, Gas Drops 61%
SocialJun 18, 2026

Renewables Shatter Records, Gas Drops 61%

WindWaterSolar smashes two more records on the @CaliforniaISO grid Wed Jun 17, 2026: 29.5 GW of WWS peak output (previous record 28.3 GW, so record beat by 1.2 GW) 467.92 GWh of daily WWS output (previous record 433.88 GWh) WWS output growth and...

By Mark Z. Jacobson
Renewable Power Days Surge From 0 to 85%Renewable Power Days Surge From 0 to 85%
SocialJun 16, 2026

Renewable Power Days Surge From 0 to 85%Renewable Power Days Surge From 0 to 85%

In 2021 - zero days with WindWaterSolar meeting > 100% of demand on the @CaliforniaISO grid for part of the day. In 2022 - 6 days (1.6%) In 2023 - 56 days (15.3%) In 2024 - 125 days (34.1%) In 2025 - 221...

By Mark Z. Jacobson
Business Leaders Back Rapid Renewable Electrification for Growth
SocialJun 15, 2026

Business Leaders Back Rapid Renewable Electrification for Growth

Survey of 1,994 business leaders across 18 countries: 90% believe "transitioning to a renewables-based electricity system in their country is likely to boost economic growth" 88% believe "electrifying their operations will make their business more competitive." 90% expect to electrify operations by 2035,...

By Mark Z. Jacobson
Modeling Accelerates Global Shift to Renewable Energy
SocialJun 14, 2026

Modeling Accelerates Global Shift to Renewable Energy

How modeling helps to transition the world to renewable energy Alphabet webinar https://t.co/F154f1ooH8 @Google @StanfordEnergy @cee_stanford @stanforddoerr @StanfordEng @StanfordWoods @Stanford

By Mark Z. Jacobson
Solar Sets Record, Powers Grid Through Heat Wave
SocialJun 11, 2026

Solar Sets Record, Powers Grid Through Heat Wave

During a heat wave, solar steps up with new record to keep the grid stable. On Wed June 10, a heat wave caused @CaliforniaISO demand to rise to its highest level in 2026. Solar responded with a record output of 22.82...

By Mark Z. Jacobson
Battery Costs Plummet as U.S. Grids Accelerate Deployment
SocialJun 9, 2026

Battery Costs Plummet as U.S. Grids Accelerate Deployment

How fast are batteries being added to electricity grids and at what cost? Battery installations and their costs in U.S. states https://web.stanford.edu/group/efmh/jacobson/WWSBook/BatteryCost.pdf Grids with the lowest U.S. wholesale electricity price https://www.eia.gov/electricity/monthly/update/print-version.php Video https://www.youtube.com/shorts/OS4xRLcdI_g

By Mark Z. Jacobson
California Grid Hits 57% Renewable, Gas Drops 62%
SocialJun 9, 2026

California Grid Hits 57% Renewable, Gas Drops 62%

California's grid is so stable, gas output has declined by 62% in 2026 vs. 2023. Wind has now provided almost the same output as gas (~14% of demand). 69 days straight and 135/159 (85%) with WWS>100% of demand for an 5.1 hours/day...

By Mark Z. Jacobson
Electric Plane Flies 300 Miles on $8 Energy
SocialJun 4, 2026

Electric Plane Flies 300 Miles on $8 Energy

"This flight, for about an hour, will cost us about $8 in energy" "The electric plane can charge in about 50 minutes" "the aircraft can travel more than 300 miles on a single charge" "Plus, as the plane descends, the force of going...

By Mark Z. Jacobson
Experiment Confirms Only 100% WWS Solves Climate
SocialJun 3, 2026

Experiment Confirms Only 100% WWS Solves Climate

The experiment is over–we know what does & doesn’t work to address climate Video https://www.youtube.com/watch?v=OTeXp8RP_Dc WWS system https://web.stanford.edu/group/efmh/jacobson/Articles/I/WWSDiagram.pdf 2009 100% WWS paper https://web.stanford.edu/group/efmh/jacobson/Articles/I/sad1109Jaco5p.indd.pdf Book https://web.stanford.edu/group/efmh/jacobson/WWSStillNMN/StillNMN.html

By Mark Z. Jacobson
Ending Fossil Subsidies Pays for Clean Energy
SocialJun 3, 2026

Ending Fossil Subsidies Pays for Clean Energy

Moving the world to clean, renewable energy costs less than world fossil-fuel subsidies Worldwide subsidies to the fossil-fuel industry exceed the annual cost of transitioning the world to 100% clean, renewable energy for all energy purposes. This means that eliminating fossil-fuel...

By Mark Z. Jacobson
Renewables
SocialJun 1, 2026

Renewables

After 5 full months in 2026, WindWaterSolar supply has exceeded demand on 127 of 151 (84.1%) days, including 61 straight. Gas use is down 61% vs 2023, supplying only 14.7% of demand during 2026, vs 37.2% in 2023. Battery output is up...

By Mark Z. Jacobson
Renewables Power 100%+ of CA Grid, Slash Gas
SocialMay 30, 2026

Renewables Power 100%+ of CA Grid, Slash Gas

59 straight and 125 of 149 (84%) days in 2026 with WindWaterSolar meeting >100% of demand on the California ISO grid for an avg of 4.9 h/d among all 149 days Fossil gas down 61%, solar up 56%, batteries up 329%...

By Mark Z. Jacobson
World's Largest Battery‑Electric Container Ship Sets Silent, Zero‑Pollution Standard
SocialMay 28, 2026

World's Largest Battery‑Electric Container Ship Sets Silent, Zero‑Pollution Standard

World's largest battery-electric container ship (127.8 m x 21.6 m; 19,600 kWh of battery storage) launched. "the most noticeable change...is the lack of noise" "the torque output of electric propulsion motors is linear and instantaneous. Acceleration and deceleration are smooth and highly...

By Mark Z. Jacobson
Blueprint for Achieving 100% Global Renewable Energy
SocialMay 27, 2026

Blueprint for Achieving 100% Global Renewable Energy

Practical Roadmap to 100% Clean, Renewable Energy Worldwide with Mark Z. Jacobson https://t.co/QATPOL8a8P @robertplank https://t.co/irGIq6qRxE

By Mark Z. Jacobson
Mark Z. Jacobson | Pulse