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.
Reposted by Jeremy Hoffman
(I saw a post about a data center line having to 'fill in a wetland' and someone said "how do you temporarily fill in a wetland" and the answer it turns out is: pretty easily, it's a regular part of construction)
December 2, 2025 at 5:32 PM
(I saw a post about a data center line having to 'fill in a wetland' and someone said "how do you temporarily fill in a wetland" and the answer it turns out is: pretty easily, it's a regular part of construction)
Reposted by Jeremy Hoffman
It goes without saying that PJM should not be interconnecting data centers when system reliability cannot be assured:
www.utilitydive.com/news/pjm-dat...
www.utilitydive.com/news/pjm-dat...
No more PJM data centers unless they can be reliably served: market monitor
The PJM Interconnection’s market monitor urged the Federal Energy Regulatory Commission to rule that large data centers can only come online if the grid operator can still meet reliability metrics.
www.utilitydive.com
December 1, 2025 at 11:20 PM
It goes without saying that PJM should not be interconnecting data centers when system reliability cannot be assured:
www.utilitydive.com/news/pjm-dat...
www.utilitydive.com/news/pjm-dat...
December 1, 2025 at 8:15 PM
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1) The editor of Cell Reports Sustainable, a new open-access journal from Cell Press, graciously invited me to do a short Q&A about our new paper, "Distribution grids may be a barrier to residential electrification." Pasting the Q&A in a short 🧵 if anyone's interested.
www.cell.com/cell-reports...
www.cell.com/cell-reports...
Distribution grids may be a barrier to residential electrification
Replacing fossil-fueled machines with electric alternatives can reduce emissions,
but Priyadarshan et al. find that reinforcing United States distribution grids to
accommodate complete home and vehicl...
www.cell.com
December 1, 2025 at 8:05 PM
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Reposted by Jeremy Hoffman
Belfast rainbow. (And sheep.)
November 29, 2025 at 6:57 PM
Belfast rainbow. (And sheep.)
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But this issue isn't new. Industry has struggled to manage the risks of lead recycling since the early 20th c, when Alice Hamilton first helped spotlight the issue.
See the first chapter of my book, Charged: A History of Batteries and Lessons for a Clean Energy Future.
www.charged-the-book.com
See the first chapter of my book, Charged: A History of Batteries and Lessons for a Clean Energy Future.
www.charged-the-book.com
November 25, 2025 at 7:28 PM
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h/t @vikmet.bsky.social
h/t @vikmet.bsky.social
The petro-dollar is dead. Long live the electro-dollar.
In this op-ed, I tried to explore the idea that if the present is electric and the future is even more electric, then it makes sense for electricity to be the foundation of the economy.
In this op-ed, I tried to explore the idea that if the present is electric and the future is even more electric, then it makes sense for electricity to be the foundation of the economy.
Electricity is about to become the new base currency and China figured it out
November 25, 2025 at 12:29 PM
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h/t @vikmet.bsky.social
h/t @vikmet.bsky.social
Reposted by Jeremy Hoffman
Thanks Jeremy!
We have 4 themed houses right now: Board game, Harry Potter, Mothman, and 80s. Steampunk coming next year.
Lots of pics at Appalachianescapes.net
We have 4 themed houses right now: Board game, Harry Potter, Mothman, and 80s. Steampunk coming next year.
Lots of pics at Appalachianescapes.net
November 24, 2025 at 1:17 PM
Thanks Jeremy!
We have 4 themed houses right now: Board game, Harry Potter, Mothman, and 80s. Steampunk coming next year.
Lots of pics at Appalachianescapes.net
We have 4 themed houses right now: Board game, Harry Potter, Mothman, and 80s. Steampunk coming next year.
Lots of pics at Appalachianescapes.net
Very cool. Some here in the states do this: @energysmartwv.bsky.social
(I couldn’t remember the name of your conversion Airbnb). His other non-RV Airbnbs are also electrified and awesome!!
(I couldn’t remember the name of your conversion Airbnb). His other non-RV Airbnbs are also electrified and awesome!!
Heat pump for the win. @janrosenow.bsky.social always says you can heat a tent with a heat pump. Well, I can confirm you can very comfortably keep a vintage caravan warm with one in a snowy windy night. 🔌💡
Camping De Nachtegaal, Rodeberg, BE
Camping De Nachtegaal, Rodeberg, BE
November 24, 2025 at 1:58 AM
Very cool. Some here in the states do this: @energysmartwv.bsky.social
(I couldn’t remember the name of your conversion Airbnb). His other non-RV Airbnbs are also electrified and awesome!!
(I couldn’t remember the name of your conversion Airbnb). His other non-RV Airbnbs are also electrified and awesome!!
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Thanksgiving is upon us. If you're able, consider donating to Heifer International, a great group helping folks in poverty around the world. You can even donate solar panels!
www.heifer.org/campaign/her...
www.heifer.org/campaign/her...
www.heifer.org
November 23, 2025 at 3:11 AM
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Reposted by Jeremy Hoffman
Dear media of the world,
When an autocrat admiring the aggressor sits with the aggressor and together they write up the terms on which the victim should surrender, it's not a peace plan/proposal, much less a peace deal.
Stop parroting the autocrat!
When an autocrat admiring the aggressor sits with the aggressor and together they write up the terms on which the victim should surrender, it's not a peace plan/proposal, much less a peace deal.
Stop parroting the autocrat!
November 22, 2025 at 4:43 PM
Dear media of the world,
When an autocrat admiring the aggressor sits with the aggressor and together they write up the terms on which the victim should surrender, it's not a peace plan/proposal, much less a peace deal.
Stop parroting the autocrat!
When an autocrat admiring the aggressor sits with the aggressor and together they write up the terms on which the victim should surrender, it's not a peace plan/proposal, much less a peace deal.
Stop parroting the autocrat!
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Nice deep dive on the Biden administration's EV legacy:
www.eenews.net/articles/bid...
www.eenews.net/articles/bid...
Biden’s EV plan failed. Or did it?
We never got those promised EV chargers — but we did get a future for EVs.
www.eenews.net
November 22, 2025 at 1:53 PM
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Here's a few things I learned digging into electricity affordability and decarbonization in Connecticut 🧵
November 20, 2025 at 4:26 PM
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U.S. Secretary of Energy Chris Wright ordered FERC to initiate a new rulemaking proceeding in order to “ensure efficient, timely and non-discriminatory load interconnections”.
#energysky 🔌💡
See Full Story: ow.ly/pUqC50Xtgz9
Writer: Peter Kelly-Detwiler
#energysky 🔌💡
See Full Story: ow.ly/pUqC50Xtgz9
Writer: Peter Kelly-Detwiler
November 18, 2025 at 8:43 PM
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@drewtozer.bsky.social made one of the best videos on heat pumps I’ve seen so far youtu.be/4Hq1dAoKZsQ?...
Heat Pumps, Explained (And Why Everyone’s Switching)
YouTube video by Drew Tozer
youtu.be
November 18, 2025 at 11:54 AM
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Reposted by Jeremy Hoffman
Yianni’s Diner in Castle Shannon is offering free Thanksgiving meals for anyone in need, no questions asked. Also, Yianni’s is only steps away from the Willow T station.
They’ll have 500 takeout meals
They’ll have 500 takeout meals
November 16, 2025 at 2:07 PM
Yianni’s Diner in Castle Shannon is offering free Thanksgiving meals for anyone in need, no questions asked. Also, Yianni’s is only steps away from the Willow T station.
They’ll have 500 takeout meals
They’ll have 500 takeout meals
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Without the need for massive grid changes. Use it where it’s generated.
November 13, 2025 at 4:20 PM
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Reposted by Jeremy Hoffman
"vaccines are good, nazis are bad" are not takes that I thought would be controversial
November 10, 2025 at 10:22 PM
"vaccines are good, nazis are bad" are not takes that I thought would be controversial
Reposted by Jeremy Hoffman
Nationwide average prices for industrial customers are slightly less than half of residential prices. That's before special negotiated discounts for the largest loads. We pay double or more, in other words.
November 7, 2025 at 1:44 PM
Nationwide average prices for industrial customers are slightly less than half of residential prices. That's before special negotiated discounts for the largest loads. We pay double or more, in other words.
Reposted by Jeremy Hoffman
A year ago today, we had a really terrible election night, and because I know how people fall into despair I sat down at 11pm and wondered what I could tell you. I told you:
November 5, 2025 at 6:26 PM
A year ago today, we had a really terrible election night, and because I know how people fall into despair I sat down at 11pm and wondered what I could tell you. I told you:
Reposted by Jeremy Hoffman
Reposted by Jeremy Hoffman
Gray-Lipped RFK Jr. Touts Body’s Natural Ability To Transmute Lead Into Gold
Gray-Lipped RFK Jr. Touts Body’s Natural Ability To Transmute Lead Into Gold
WASHINGTON—Praising the process as yet another miracle of biology that modern medicine chooses to ignore, a gray-lipped Robert F. Kennedy Jr. spoke at a press conference Wednesday during which he tout...
theonion.com
November 2, 2025 at 5:00 PM
Gray-Lipped RFK Jr. Touts Body’s Natural Ability To Transmute Lead Into Gold
Reposted by Jeremy Hoffman
Happy Halloween
October 31, 2025 at 10:35 PM
Happy Halloween
Reposted by Jeremy Hoffman
Python was awarded a funding grant, funding grant asked Python foundation to remove all diversity and inclusion initiatives they have.
Python foundation said no and rejected the grant.
If you use Python, send a few dollars to the charity to keep it going. I’m pushing a dono on behalf of ScamGuard.
Python foundation said no and rejected the grant.
If you use Python, send a few dollars to the charity to keep it going. I’m pushing a dono on behalf of ScamGuard.
Please read our statement, share it with your networks, and support us if you can. www.python.org/sponsors/app... psfmember.org/civicrm/cont...
October 27, 2025 at 4:11 PM
Python was awarded a funding grant, funding grant asked Python foundation to remove all diversity and inclusion initiatives they have.
Python foundation said no and rejected the grant.
If you use Python, send a few dollars to the charity to keep it going. I’m pushing a dono on behalf of ScamGuard.
Python foundation said no and rejected the grant.
If you use Python, send a few dollars to the charity to keep it going. I’m pushing a dono on behalf of ScamGuard.
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Strong relationship here between wholesale electricity price and how close you are to a data center.
We reallly need to see data centers bringing their own (clean) energy with them
We reallly need to see data centers bringing their own (clean) energy with them
October 26, 2025 at 12:27 PM
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