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Jeffrey Char

@JSeedVentures

Jeffrey Char is a serial entrepreneur, investor and educator focusing on sustainable energy systems, climate tech and agtech. #energy

 Tokyo, Japan
about.me/jeffchar
Joined July 2009
  • Tweets18.1K
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  • Followers1.4K
1.3KMedia
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Geothermal Beyond the Constraints of Subsurface Fluids: Technology Trends in Closed-Loop Geothermal and Prospects for Deployment in Japan Markets | GeoVanguard Intelligence geovanguardintelligence.com/…
Geothermal Beyond the Constraints of Subsurface Fluids: Technology Trends in Closed-Loop Geothermal...

Geothermal Beyond the Constraints of Subsurface Fluids: Technology Trends in Closed-Loop Geothermal...

—Multilateral and Coaxial Designs, the Technology Strategies of Three Overseas Companies, and Long-Term Thermal Performance in Hot-Spring Regions— The

geovanguardintelligence.com
18
Beyond Dependence on Natural Hydrothermal Resources:Advances in EGS Technology and the Conditions for Deployment in Japan and Asia | GeoVanguard Intelligence geovanguardintelligence.com/…
Beyond Dependence on Natural Hydrothermal Resources:Advances in EGS Technology and the Conditions...

Beyond Dependence on Natural Hydrothermal Resources:Advances in EGS Technology and the Conditions...

—Technology Transfer from the Shale Industry, Induced Seismicity Risk Management, and Deployment Challenges in Tectonically Active Regions— Geothermal

geovanguardintelligence.com
18
“Not yet” seths.blog/2026/11/not-yet/
“Not yet”

“Not yet”

The reason we train is to get better. Every successful product goes from version 1.0 to 2.0, eventually. Very few people still drive a Model T. It’s not perfect, not yet. But we ship the work…

seths.blog
26
New titanium thin film turns waste heat into power 250 times better interestingengineering.com/i…
New titanium thin film turns waste heat into power 250 times better

New titanium thin film turns waste heat into power 250 times better

Researchers added titanium to thin films in electronic devices, improving their heat-to-electricity-generating capacity by 250 times.

interestingengineering.com
16
SVOLT launches series production of its semi-solid-state battery - electrive.com electrive.com/2026/10/27/svo…
electrive – the industry's leading emobility media

electrive – the industry's leading emobility media

We offer comprehensive reporting of the highest quality - as a central platform for the rapid ramp-up of electromobility. With news, background information, driving reports, interviews, videos and a...

electrive.com
15
Singapore to study geothermal power after survey finds vast potential beneath the city-state eco-business.com/news/singap…
Singapore to study geothermal power after survey finds vast potential

Singapore to study geothermal power after survey finds vast potential

METI minister Tan See Leng also unveiled plans to triple battery storage, a S$75 million fund for cleaner power generation, approval for a 1.3GW renewable import project to Sembcorp and a deal to...

eco-business.com
13
Inside Intersect’s behind-the-meter gamble
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How Cacao Can Do So Much More Than Make Chocolate wri.org/insights/hidden-bene…
How Cacao Can Do So Much More Than Make Chocolate

How Cacao Can Do So Much More Than Make Chocolate

The cocoa industry produces 700,000 tons of waste, yet much of the discarded organic material can be transformed into valuable byproducts benefiting the land and farmers.

wri.org
20
Interesting discussion on how the AI-driven clean-energy boom is undergoing a market correction as investors to demand proven commercial viability. The AI Stock Selloff Is Hitting Clean Energy youtube.com/watch?v=8cLmUni0…
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Mitsubishi Power Deliveries Stretch to 2031 as Gas Turbine Shortage Hits Data Centers and Utilities - Energy News Beat
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Origami-based construction method yields lightweight, load-bearing structures on architectural scales news.mit.edu/2026/origami-ba…
Origami-based construction method yields lightweight, load-bearing structures on architectural...

Origami-based construction method yields lightweight, load-bearing structures on architectural...

An origami-based structural system developed at MIT can be used to design complex, lightweight structures that are stiffer, stronger, and easier to assemble than other types of architectural origami,...

news.mit.edu
15
Singapore awards contract for geothermal feasibility study following positive initial evaluation thinkgeoenergy.com/singapore…
Singapore awards contract for geothermal feasibility study following positive initial evaluation

Singapore awards contract for geothermal feasibility study following positive initial evaluation

Singapore has awarded the contract for a geothermal feasibility study following the positive results of a two-year geophysical survey.

thinkgeoenergy.com
23
US team develops device that powers battery-free sensors for at least 24 hours
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So true. Hospitality thrives on mutual respect. Paying for a product or service doesn’t entitle anyone to mistreat the people delivering it. Sometimes the right boundary is choosing not to serve that customer again. Hospitality in the mirror seths.blog/2026/10/hospitali…
Hospitality in the mirror

Hospitality in the mirror

Danny Meyer and Will Guidara have each written fabulous books about hospitality. They missed one thing. The customers who get the most authentic and lasting hospitality are the ones who deserve it.…

seths.blog
22
Ultra-thin coatings could pull CO2 from air in less than one second
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Eavor Demobilizes Rigs in Geretsried: What It Means for Closed-Loop Geothermal Investors, Heat Markets, and Project Risk alphaxioms.blogspot.com/2026…
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Recursive launches Flint, a laptop coding model it says was largely built by AI | TechCrunch techcrunch.com/2026/10/21/re…
Recursive launches Flint, a laptop coding model it says was largely built by AI | TechCrunch

Recursive launches Flint, a laptop coding model it says was largely built by AI | TechCrunch

Startup Recursive has released Flint, a free, laptop-sized coding model built largely by its own AI research system, as an early test of AI that improves itself.

techcrunch.com
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Geothermal Just Proved It Can Compete With Solar-Plus-Storage on Price | OilPrice.com
Crude Oil Prices Today | OilPrice.com

Crude Oil Prices Today | OilPrice.com

Crude oil prices & gas price charts. Oil price charts for Brent Crude, WTI & oil futures. Energy news covering oil, petroleum, natural gas and investment advice

oilprice.com
20
Project InnerSpace and SPE Launch the Geothermal Resources Management System Initiative To Unlock Global Capital Markets for Geothermal Energy jpt.spe.org/project-innerspa…
Project InnerSpace and SPE Launch the Geothermal Resources Management System Initiative To Unlock...

Project InnerSpace and SPE Launch the Geothermal Resources Management System Initiative To Unlock...

Initiative identified as the single highest-priority action to support geothermal capital market creation following a 2-year expert analysis of financial barriers to exponential-scale geothermal...

jpt.spe.org
18
国内初「森林ファンド」　1000億円投資、金融・商社・ゼネコンが連合 - 日本経済新聞 nikkei.com/article/DGXZQOUB1…
国内初「森林ファンド」 1000億円投資、金融・商社・ゼネコンが連合

国内初「森林ファンド」　1000億円投資、金融・商社・ゼネコンが連合

民間の投資マネーで森林の権利を集約し、収益化を目指す試みが始まる。国内大手ファンドのアドバンテッジパートナーズが2027年春にもファンドを立ち上げ、金融機関や商社、ゼネコンなど10社超が枠組みに加わる。5〜7年で1000億円規模を投じる。国内の森林への投資に特化した大型ファンドは初となる。三井住友信託銀行や東京センチュリー、丸紅、三菱UFJ銀行がファンドへの参画を協議している。大林組や九州電力

nikkei.com
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