Lightnews — Scholar-powered news

Mark Z. Jacobson

@mzjacobson.bsky.social

4K followers 320 following 670 posts

Climate, pollution, clean/renewable energy Stanford U Prof, Civil & Env Eng; Director, Atmos/Energy Program Cofounder-Solutions Project; Appeared on Letterman Testified Held v Montana https://web.stanford.edu/group/efmh/jacobson/ Stanford.io/Jacobson .. more

Videos

Mark Zachary Jacobson is a professor of civil and environmental engineering at Stanford University and director of its Atmosphere/Energy Program. He is also a co-founder of the non-profit, Solutions Project. .. more

Environmental science 27%

Public Health 16%

Posts Media Videos Starter Packs

Reposted by Mark Z. Jacobson, Juan Cole

Dominic Manchee @dpmanchee.bsky.social · 1d

Truely impressive - long term strategic investment in solar from China.

Contrast that with the chop and change policies of the West.

#Copernicus #Sentinel2 False Colour timelapse (Bands 8, 4, 3) 2015 - 2025 July scenes only. Imagery from Copernicus Browser link.dataspace.copernicus.eu/xzj0

4 5

Mark Z. Jacobson @mzjacobson.bsky.social · 1d

Why China Built 162 sq mi of Solar Panels on World’s Highest Plateau

China’s efforts contrast with the US, which is using its muscle to pressure countries to buy gas+oil+coal. China is investing in cheaper solar+wind+batteries+EVs to become the world’s supplier of RE
www.nytimes.com/2025/10/10/b...

Why China Built 162 Square Miles of Solar Panels on the World’s Highest Plateau

www.nytimes.com

7 21

Mark Z. Jacobson @mzjacobson.bsky.social · 1d

Much less than 1% of corn ethanol is for biophysics, and so what? That application doesn’t kill people through air pollution or damage the planet through global warming.

Reposted by Mark Z. Jacobson

Christian Breyer @christianonre.bsky.social · 1d

1/ New @lut.fi study shows that remote, sparsely populated #Lapland can transition to a #100RE system by 2050 doi.org/10.1016/j.en..., becoming a key Arctic energy hub with a very low LCOE of 28.2 €/MWh and can contribute to global defossilisation efforts

1 2 10

Reposted by Mark Z. Jacobson

Stanford Energy @stanfordenergy.bsky.social · 1d

In 2024, renewables added 582 GW (91% of new power) while nuclear added as much as renewables added in two days. "Nuclear costs are huge and rising," write Stanford's Mark Jacobson, Amory Lovins, and co-authors.

Read the full opinion piece: www.newcivilengineer.com/opinion/a-go...
#nuclear

6 10

Reposted by Mark Z. Jacobson

Mark Z. Jacobson @mzjacobson.bsky.social · 1d

In A Contest Between Solar & Ethanol, There Is One Clear Winner

cleantechnica.com/2025/10/09/i... @cleantechnica.bsky.social

In A Contest Between Solar & Ethanol, There Is One Clear Winner - CleanTechnica

The attacks on solar are inspired by ignorance and greed, not reality. Solar plus storage is the future; coal is the past.

cleantechnica.com

1 12 35

Reposted by Juan Cole

Mark Z. Jacobson @mzjacobson.bsky.social · 1d

California marching forward preparing for offshore wind, ignoring the incompetence of those slowing it down.

California to spend $42m on offshore wind ports
renews.biz/103569/calif...

renews.biz

4 28 170

Reposted by Mark Z. Jacobson

Ben Vost ❤🇺🇦🇵🇸 @beevee23.bsky.social · 2d

How much of US surface area is taken up with fossil fuel energy projects versus how much would be taken up by renewables if the US switched completely (not taking about health benefits or the reduction in the cost of energy) youtu.be/ccu-Qdp39xA?... by @mzjacobson.bsky.social

Busting a myth on how much land is needed for the U.S. to run on 100% renewables vs fossil+biofuels

YouTube video by Mark Z. Jacobson

youtu.be

3 7

Mark Z. Jacobson @mzjacobson.bsky.social · 2d

Impressive. 5 more days straight with 100% WindWaterSolar on California ISO grid, making it 193 of 280 days in 2025

Gas down 18% v '24 & 37% v '23, replaced largely by solar & batteries

54.7% of all demand met by WWS

Demand down 1.7% v '24 & 1.1% v '23 due largely to growth of roof PV

8 22

Mark Z. Jacobson @mzjacobson.bsky.social · 3d

World Nearing 'Crucial Turning Point' as Clean Energy Outpaces Demand - @newsweek.com

1st half of 2025 brought a small tipping point in the global energy system: @ember-energy.org

Clean sources grew more than demand and therefore they displaced some fossil fuels

www.newsweek.com/world-nearin...

World nearing 'crucial turning point' as clean energy outpaces power demand

Energy research group Ember said the global surge in clean energy more than met demand for electricity and led to the first fall in fossil fuel use this year.

www.newsweek.com

12 24

Mark Z. Jacobson @mzjacobson.bsky.social · 4d

UK prime minister K. Starmer’s new partnership with US president Trump ushers in 'a golden age of nuclear'

But, 'Each year, nuclear adds as much net global power capacity as renewables add every two days'

www.newcivilengineer.com/opinion/a-go... @drpauldorfman.bsky.social @stephenjwt.bsky.social

A ‘Golden Age’ of nuclear? | New Civil Engineer

The reason is simple. Nuclear costs are huge and rising and significant delays are the norm. The result is that nuclear power faces the same fundamental

www.newcivilengineer.com

2 3 19

Reposted by Mark Z. Jacobson

Christian Breyer @christianonre.bsky.social · 4d

1/ New research @lut.fi presents the first global analysis of inter-annual storage for #100RE systems in 145 regions doi.org/10.1016/j.ap.... Strategic generation overcapacity is a significantly more cost-effective solution than building massive storage.

3 20 60

Reposted by Mark Z. Jacobson

Mark Z. Jacobson @mzjacobson.bsky.social · 4d

New record battery output of 47.2 GWh on the California ISO grid on Sun 10/5/25. 9.2% of all demand was met by batteries.

Now 191 days of 2025 with > 100% WWS for part of day.

Gas is down 18% v '24, 37% v '23
Solar up 15% v '24, 45% v '23
Demand down 1.7% v' 24, 1% v '23 despite more AI

10 23

Mark Z. Jacobson @mzjacobson.bsky.social · 5d

Mitsubishi debuts 640 kW industrial/commercial heat pump providing hot water up to 90 C and coefficient of performance of up to 4.1 (4.1 units of heat delivered for every 1 unit of electricity used). Can be used for district heating too.

www.pv-magazine.com/2025/10/06/m...

Mitsubishi debuts 640 kW heat pump providing hot water up to 90 C

The ETI-W heat pump, with a coefficient of performance of up to 4.1, utilizes heat emitted from factory production processes as a heat source to supply hot water at up to 90 C. Debuting on the Japanes...

www.pv-magazine.com

2 11 24

Reposted by Mark Z. Jacobson