Jeremy Hoffman
@380vdc.bsky.social
An interested layperson foolishly tackling the incumbency most entrenched in just about every aspect of our lives: alternating current electricity in buildings.
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Minneapolis modeling resilience in so many ways ❤️❤️
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Minneapolis modeling resilience in so many ways ❤️❤️
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January 27, 2026 at 4:15 PM
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Minneapolis modeling resilience in so many ways ❤️❤️
🔌💡
Minneapolis modeling resilience in so many ways ❤️❤️
🔌💡
Reposted by Jeremy Hoffman
We are going to need a lot of people to rebuild federal science in the future
It could take a generation to recover the talent lost from federal science.
But it doesn't have to. We should be ready to scale up the Presidential Management Fellowship program to triple what it once was and rebuild U.S. capacity by 2030.
But it doesn't have to. We should be ready to scale up the Presidential Management Fellowship program to triple what it once was and rebuild U.S. capacity by 2030.
How many STEM Ph.D.s were lost from the U.S. federal government last year?
My colleagues @mghersher.bsky.social and @policyhound.bsky.social dug into a recent data release to find the answer. A @science.org exclusive.
www.science.org/content/arti...
My colleagues @mghersher.bsky.social and @policyhound.bsky.social dug into a recent data release to find the answer. A @science.org exclusive.
www.science.org/content/arti...
January 27, 2026 at 2:47 PM
We are going to need a lot of people to rebuild federal science in the future
Reposted by Jeremy Hoffman
Senate Dems should heed this warning. Yes, we care about affordability. But that is not the primary concern when Americans are being gunned down in the streets.
The murder of Alex Pretti might prove to be a political turning point for the GOP. It should be a turning point for Dems, too. For the current leadership, and the consultant-industrial complex, which just fatally endangered the careers of seven members who chose to put morality last.
A Failure In Plain Sight
Who, if anyone, will acknowledge the obvious, and do something about it?
www.offmessage.net
January 26, 2026 at 4:42 PM
Senate Dems should heed this warning. Yes, we care about affordability. But that is not the primary concern when Americans are being gunned down in the streets.
Reposted by Jeremy Hoffman
Nice piece on the struggle of directing people's attention to the horizon - climate change - when fascism is staring at you in the face.
When it all gets too much for me, I get busy trying to get rid of fossil fuels (in my own life, in society around me).
When it all gets too much for me, I get busy trying to get rid of fossil fuels (in my own life, in society around me).
Wrote myself a pep talk to get back to work tomorrow. It helped me. Hope it helps you.
I don't know how to do this
But I'm going to keep doing it anyway.
heated.world
January 26, 2026 at 8:40 AM
Nice piece on the struggle of directing people's attention to the horizon - climate change - when fascism is staring at you in the face.
When it all gets too much for me, I get busy trying to get rid of fossil fuels (in my own life, in society around me).
When it all gets too much for me, I get busy trying to get rid of fossil fuels (in my own life, in society around me).
Reposted by Jeremy Hoffman
“Get it all on record now — get the films — get the witnesses — because somewhere down the road of history some bastard will get up and say that this never happened.”
Dwight D. Eisenhower, after visiting liberated concentration camps in April 1945
Dwight D. Eisenhower, after visiting liberated concentration camps in April 1945
January 24, 2026 at 9:24 PM
“Get it all on record now — get the films — get the witnesses — because somewhere down the road of history some bastard will get up and say that this never happened.”
Dwight D. Eisenhower, after visiting liberated concentration camps in April 1945
Dwight D. Eisenhower, after visiting liberated concentration camps in April 1945
Reposted by Jeremy Hoffman
Thread.
I came to Minneapolis to report on what's going on, and one of the main questions I showed up with is "just what is the scale of the resistance?" After all, we're all used to the news calling Portland a "war zone" or whatever when it's just some protests in one part of town.
January 22, 2026 at 7:07 AM
Thread.
Isaac Newton is losing his mind rn
He dedicated most of his life to alchemy and these assholes figured it out by accident? This is bullshit.
He dedicated most of his life to alchemy and these assholes figured it out by accident? This is bullshit.
Scientists mimicking the Big Bang accidentally turn lead into gold
January 21, 2026 at 1:11 PM
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Regarding long term power outages in winter: gas furnaces don't work without electricity. If you have an EV, you can run your furnace internals for days www.youtube.com/watch?v=EnyB...
Keep Your Family Warm During An Emergency Power Outage With This $20 Fix
YouTube video by The DIY HVAC Guy
www.youtube.com
January 21, 2026 at 11:28 AM
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Reposted by Jeremy Hoffman
@volts.wtf you've got to do an episode on this!
January 19, 2026 at 3:17 PM
@volts.wtf you've got to do an episode on this!
Reposted by Jeremy Hoffman
State Grid, China’s main grid operator, will invest 4tn yuan ($574bn) to upgrade the country’s power grid over 2026-30, an average of 800bn yuan in investment per year, reports Reuters. 🔌💡
www.carbonbrief.org/daily-brief/...
www.carbonbrief.org/daily-brief/...
NY wind project resumes | China grid investment to ‘surge’ | Global elite ‘concerns’ - Carbon Brief
A New York offshore wind project is to resume construction after a federal judge temporarily lifted a suspension put in place by the Trump administration
www.carbonbrief.org
January 17, 2026 at 4:22 AM
State Grid, China’s main grid operator, will invest 4tn yuan ($574bn) to upgrade the country’s power grid over 2026-30, an average of 800bn yuan in investment per year, reports Reuters. 🔌💡
www.carbonbrief.org/daily-brief/...
www.carbonbrief.org/daily-brief/...
It’s amazing how thoroughly electrical power systems are driven by I²R.
Whether it’s hundreds of miles Tx or millimeters on an AI board. 👇👇
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h/t to @kevpluck.bsky.social for symbolsalad.com easiest scientific symbols!!
Whether it’s hundreds of miles Tx or millimeters on an AI board. 👇👇
🔌💡
h/t to @kevpluck.bsky.social for symbolsalad.com easiest scientific symbols!!
January 15, 2026 at 12:29 PM
It’s amazing how thoroughly electrical power systems are driven by I²R.
Whether it’s hundreds of miles Tx or millimeters on an AI board. 👇👇
🔌💡
h/t to @kevpluck.bsky.social for symbolsalad.com easiest scientific symbols!!
Whether it’s hundreds of miles Tx or millimeters on an AI board. 👇👇
🔌💡
h/t to @kevpluck.bsky.social for symbolsalad.com easiest scientific symbols!!
Reposted by Jeremy Hoffman
Do one doubts that you can make a firm dominant grid work.
They have enough hydro and biomass capacity to cover their firm demand, but not enough water to cover their annual GWh.
This is a great use of VRE as a resevoir extender, but doesn't scale / extend unless you have the hydro resource. 🔌💡
They have enough hydro and biomass capacity to cover their firm demand, but not enough water to cover their annual GWh.
This is a great use of VRE as a resevoir extender, but doesn't scale / extend unless you have the hydro resource. 🔌💡
“Uruguay did what most nations still call impossible: it built a power grid that runs almost entirely on renewables—at half the cost of fossil fuels. The physicist who led that transformation says the same playbook could work anywhere—if governments have the courage to change the rules.”
Uruguay’s Renewable Charge: A Small Nation, A Big Lesson For The World
Uruguay built a power grid that runs 99% on renewables—at half the cost of fossil fuels. Here’s how its bold energy overhaul became a global model.
www.forbes.com
January 11, 2026 at 11:05 AM
Do one doubts that you can make a firm dominant grid work.
They have enough hydro and biomass capacity to cover their firm demand, but not enough water to cover their annual GWh.
This is a great use of VRE as a resevoir extender, but doesn't scale / extend unless you have the hydro resource. 🔌💡
They have enough hydro and biomass capacity to cover their firm demand, but not enough water to cover their annual GWh.
This is a great use of VRE as a resevoir extender, but doesn't scale / extend unless you have the hydro resource. 🔌💡
Reposted by Jeremy Hoffman
Thanks @adrianhiel.bsky.social, followed.
I also followed his newsletter at
@seb.energyflux.news.ap.brid.gy
Strong second for this recommendation!
#energysky
I also followed his newsletter at
@seb.energyflux.news.ap.brid.gy
Strong second for this recommendation!
#energysky
I shamelessly stole a turn of phrase from Seb's most recent newsletter for an important email today.
Definitely someone you should follow for energy news and analysis.
Definitely someone you should follow for energy news and analysis.
Well hello there. I have finally done something I should have done years back and opened a BlueSky account.
👋 Hi, I'm Seb Kennedy, energy journalist and founding editor of Energy Flux - a fiercely independent source of market news and analysis.
Check out the free newsletter: www.energyflux.news
👋 Hi, I'm Seb Kennedy, energy journalist and founding editor of Energy Flux - a fiercely independent source of market news and analysis.
Check out the free newsletter: www.energyflux.news
January 10, 2026 at 2:10 PM
Thanks @adrianhiel.bsky.social, followed.
I also followed his newsletter at
@seb.energyflux.news.ap.brid.gy
Strong second for this recommendation!
#energysky
I also followed his newsletter at
@seb.energyflux.news.ap.brid.gy
Strong second for this recommendation!
#energysky
Reposted by Jeremy Hoffman
Insecure, Frustrated Bully With Something To Prove Considering Career In Law Enforcement https://theonion.com/insecure-frustrated-bully-with-something-to-prove-cons-1819575405/
January 8, 2026 at 9:00 PM
Insecure, Frustrated Bully With Something To Prove Considering Career In Law Enforcement https://theonion.com/insecure-frustrated-bully-with-something-to-prove-cons-1819575405/
Reposted by Jeremy Hoffman
Batteries are the fossil fuel killer.
China knows and would prefer to not be reliant on fossil fuels from place like Venezuela. So they do this.
China knows and would prefer to not be reliant on fossil fuels from place like Venezuela. So they do this.
@iolahughes.bsky.social:
"China - the largest BESS market - brought online more capacity in December alone than the US - the second-largest BESS market - did in the full year! 🤯🤯"
#battchat nitter.net/RhoMoIola/st...
"China - the largest BESS market - brought online more capacity in December alone than the US - the second-largest BESS market - did in the full year! 🤯🤯"
#battchat nitter.net/RhoMoIola/st...
January 8, 2026 at 2:13 PM
Batteries are the fossil fuel killer.
China knows and would prefer to not be reliant on fossil fuels from place like Venezuela. So they do this.
China knows and would prefer to not be reliant on fossil fuels from place like Venezuela. So they do this.
Reposted by Jeremy Hoffman
A reminder - before Trump, MAGA, Musk and Fox rewrote history - that this is what the entire country agreed had happened five years ago today:
January 6, 2026 at 12:40 PM
A reminder - before Trump, MAGA, Musk and Fox rewrote history - that this is what the entire country agreed had happened five years ago today:
Reposted by Jeremy Hoffman
Electrification, evolving regulations, and growing demand are reshaping the Dutch power grid. 🔌💡
new.abb.com/news/detail/...
new.abb.com/news/detail/...
new.abb.com
January 6, 2026 at 5:24 AM
Electrification, evolving regulations, and growing demand are reshaping the Dutch power grid. 🔌💡
new.abb.com/news/detail/...
new.abb.com/news/detail/...
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Enjoyed being a guest on Connectology - if you want to listen about battery growth in GB and worldwide, there should be some useful snippets:
We talk through GW blueprints, market maturity, relative subsidy, stability markers and system design
youtu.be/a1DsBW-xzdw?...
We talk through GW blueprints, market maturity, relative subsidy, stability markers and system design
youtu.be/a1DsBW-xzdw?...
#71 Battery Storage Market Realities with Ed Porter, Modo Energy
YouTube video by Roadnight Taylor
youtu.be
January 5, 2026 at 8:01 PM
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Reposted by Jeremy Hoffman
Rob Gramlich, president of power consulting firm Grid Strategies, told CNBC that he expects the debate over data centers to become even more intense this year once Americans start getting socked with even higher utility bills. 🔌💡 @robgramlichdc.bsky.social
www.commondreams.org/news/data-ce...
www.commondreams.org/news/data-ce...
US Electric Grid Heading Toward 'Crisis' Thanks to AI Data Centers | Common Dreams
The massive energy needs of AI data centers spark political controversy in 2026. Concerns rise over impact on grids, environment, and utility bills.
www.commondreams.org
January 3, 2026 at 2:03 AM
Rob Gramlich, president of power consulting firm Grid Strategies, told CNBC that he expects the debate over data centers to become even more intense this year once Americans start getting socked with even higher utility bills. 🔌💡 @robgramlichdc.bsky.social
www.commondreams.org/news/data-ce...
www.commondreams.org/news/data-ce...
Reposted by Jeremy Hoffman
Any discussion of how a few actors are protesting Trump's takeover of the Kennedy Center has to consider how Republicans have tried to slash social spending for the arts — and denigrate the arts and humanities as legitimate fields — since at least Reagan, if not longer.
December 30, 2025 at 8:37 PM
Any discussion of how a few actors are protesting Trump's takeover of the Kennedy Center has to consider how Republicans have tried to slash social spending for the arts — and denigrate the arts and humanities as legitimate fields — since at least Reagan, if not longer.
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Saw post about climate change and lighthouses reminded of 'Space to Earth' by John Perlin, 1999.
Coast Guard Captain Loomer got attention for saving money by deploying solar on ocean buoys. His tests in the most inhospitable locations pushed the global marine take up of solar power.
Coast Guard Captain Loomer got attention for saving money by deploying solar on ocean buoys. His tests in the most inhospitable locations pushed the global marine take up of solar power.
December 22, 2025 at 11:48 AM
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Reposted by Jeremy Hoffman
And my neighbors who are cold, wet, hungry, and overwhelmed…are now happy that their humble little refuge — where love gets traction, and prayers are answered — will stay in business.
🧵 8 of 9
🧵 8 of 9
December 21, 2025 at 2:51 AM
And my neighbors who are cold, wet, hungry, and overwhelmed…are now happy that their humble little refuge — where love gets traction, and prayers are answered — will stay in business.
🧵 8 of 9
🧵 8 of 9
Reposted by Jeremy Hoffman
It’s the “season of love and giving”…but this year, doesn’t it seem more like a “season of fear and taking”? Like many of you, I’ve been saddened by the human impact of draconian government budget cuts and how angry many housed Americans are at unhoused Americans.
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🧵 1 of 9
December 21, 2025 at 2:51 AM
It’s the “season of love and giving”…but this year, doesn’t it seem more like a “season of fear and taking”? Like many of you, I’ve been saddened by the human impact of draconian government budget cuts and how angry many housed Americans are at unhoused Americans.
🧵 1 of 9
🧵 1 of 9
Reposted by Jeremy Hoffman
Thread from a sharp U.S. House rep who's actually worked in the energy industry (🔌💡)
This Yglesias piece in the NYT is horrifically bad. Almost every "fact" it cites is provably false. At best it is cocktail party banter from a pundit who knows nothing of energy. At worst, it was cut/paste from oil industry talking points. So, a rebuttal: www.nytimes.com/2025/12/18/o...
Opinion | Obama Supported It. The Left in Canada and Norway Does. Why Don’t Democrats?
www.nytimes.com
December 20, 2025 at 4:19 PM
Thread from a sharp U.S. House rep who's actually worked in the energy industry (🔌💡)