
Professor @ceu @lunduniversity Lead Author IPCC WG3 Energy security & transitions, feasibility of climate mitigation, #renewables #nuclear. 🇸🇪🇪🇺🇺🇦
Bosjökloster, Sweden
Joined April 2009
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Aleh Cherp retweeted
8/10 These fears weren't just that 1950s thing either. When computers arrived in the 60s, a committee warned of the “cybernation revolution.”
Its 1964 statement, The Triple Revolution, argued that “the traditional link between jobs and incomes is being broken.”
“THE CYBERNATION REVOLUTION: A new era of production has begun. Its principles of organization are as different from those of the industrial era as those of the industrial era were different from the agricultural. The cybernation revolution has been brought about by the combination of the computer and the automated self-regulating machine. This results in a system of almost unlimited productive capacity which requires progressively less human labor. Cybernation is already reorganizing the economic and social system to meet its own needs.”
Aleh Cherp retweeted
The rhetorical functions of invoking experts in legislative debates over social policy in Finland
tandfonline.com/doi/pdf/10.1…
Aleh Cherp retweeted
Last Friday evening (16 October), I suspended the 65th Plenary Session of the IPCC in Addis Ababa. The work of this Plenary hasn’t finished. We will reconvene the plenary at the earliest opportunity.
Read more: ⬇️
Statement by the @IPCC_CH Chair Jim Skea on suspension of the 65th Plenary Session of the IPCC
Read the full statement online here: lnkd.in/ev6Y2wmp
Aleh Cherp retweeted
Because it runs an energy only market with lots of solar, wind, & batteries (with some gas & nuclear), Texas is a laboratory for where we might arrive with a renewable plus batteries system; maybe $0.05-0.1 /kWh peaks? I’m curious where the average price is trending.
Aleh Cherp retweeted
I often see people argue that clean energy is not reducing emissions, because it just adds to rather than replaces fossil fuels. This argument is deeply misguided – clean energy built since 2005 has displaced 23 billion tons.
I dive in over at The Climate Brink (link below)
Aleh Cherp retweeted
We are primates, with a third of our brain devoted to vision. Graphics are the best way to communicate quantitative, spatial, and causal information, but they are as hard to master as stylish prose. Here's an excellent guide to data visualization by Saloni Dattani @salonium open.substack.com/pub/saloni…
Aleh Cherp retweeted
Sweden’s nuclear applications now cover up to ~11 GW, potentially exceeding the government’s 10 GW ambition for 2045 💥
Last week, I posted an updated map showing applications covering up to ~8 GW of new nuclear capacity in Sweden. I thought this would be the last update in a while. Turns out, I was wrong the very next day. Now I’m starting to run out of space on the map.
Fortum-owned NuCore Energi has now applied for state aid for a new nuclear project in Oskarshamn with a potential capacity of 1.2-3.4 GW.
And today, another one of the projects moved significantly forward.
Studsvik has selected GE Vernova Hitachi and Samsung C&T as strategic collaborators for its ReFirm programme. The first project is now planned around four BWRX-300 reactors with a combined capacity of approximately 1.2 GW.
This takes the maximum capacity covered by applications for new nuclear in Sweden to around 11 GW. That is now above the 10 GW level the Swedish government has used in its nuclear roadmap for 2045.
There's now a total of seven proposed sites in the pipeline:
1️⃣ Videberg Kraft at Ringhals has applied for state aid for new nuclear. Rolls-Royce SMR has since been selected as supplier, with the project planned around three 470 MW reactors with a combined capacity of around 1.4 GW.
2️⃣ Kärnfull Next – a Studsvik company, has applied for site approval in Valdemarsvik for 4-6 SMRs with a total capacity of around 1.2-1.6 GW. Both Valdemarsvik and Nyköping are included in Studsvik’s ReFirm state-aid application and is one of two possible locations for the first 1.2 GW BWRX-300 project by GE Vernova Hitachi Nuclear Energy and Samsung C&T Corporation.
3️⃣ Blykalla has applied for both site approval and state aid for its project at Norrsundet. The project consists of six SEALER-55 reactors with a combined capacity of 330 MW.
4️⃣ Studsvik has applied for site approval at its existing site in Nyköping for 2-4 light-water reactors with a total capacity of around 0.6-1.4 GW.
5️⃣ Nordic Baseload Power AB has applied for both site approval and state aid for new nuclear at Barsebäck. The project consists of two large-scale boiling water reactors with a combined capacity of around 2.5 GW.
6️⃣ Blykalla has applied for site approval for a second reactor park at Untra in Tierp municipality. The project could consist of up to eight SEALER reactors with a combined capacity of up to 440 MW. No state-aid application has been announced for this project so far.
7️⃣ Fortum has applied for state aid for a new nuclear project at Oskarshamn covering 1.2-3.4 GW. The reactor technology has not yet been selected, with Fortum working with EDF and Westinghouse Electric Company and Hyundai Engineering & Construction Co.,Ltd. on large-scale reactor alternatives and GE Vernova Hitachi on the SMR alternative.
The ~11 GW figure is the maximum capacity covered by the different applications, so it obviously does not mean that all 11 GW will be built.
Aleh Cherp retweeted
Excited to share our new working paper: how much did the US standard of living really rise over the twentieth century — and when? With @bhwittenbrink
Using 5.1 million Sears catalog listings, we build a quality-adjusted price index for consumer goods, 1900–1990. Two headline findings: growth was much larger than official statistics imply, and its peak came before WWII, not after. (1/9)
Aleh Cherp retweeted
For all the sturm and drang, opinions and POVs, this is numerically how fast CCS injections are growing in the world. Most of the volume is a few big projects @DrAlaaClimate @AndreasenJack imperialcollegelondon.github…
Aleh Cherp retweeted
Applications covering up to ~8 GW of new nuclear capacity in Sweden 🚀
Only a few months ago, I made a post about applications for up to ~5 GW of new nuclear capacity in Sweden.
Well, I already need to update the map.
Since then, Nordic Baseload Power has applied for site approval and state support for 2.5 GW of new nuclear at Barsebäck, several of the projects from my original post have moved further ahead, and yesterday Blykalla submitted an application for a second reactor park in Sweden.
There are now six proposed sites in Sweden:
1️⃣ Videberg Kraft has applied for state aid for new nuclear at Ringhals. Since my last post, Rolls-Royce SMR has been selected as supplier, with the project now planned around three 470 MW reactors with a combined capacity of 1.4 GW. The Swedish state has also decided to become a 60% owner of Videberg Kraft, alongside Vattenfall and Industrikraft Sverige with 20% each.
2️⃣ Kärnfull Next – a Studsvik company has applied for site approval in Valdemarsvik. The plan covers 4-6 SMRs with a total capacity of around 1.2-1.6 GW.
3️⃣ Blykalla has applied for both site approval and state support for its project in Norrsundet, Gävle. The project consists of six SEALER-55 reactors with a total capacity of 330 MW.
4️⃣ Studsvik has applied for site approval at its existing site in Nyköping, covering 2-4 light-water reactors with a total capacity of around 0.6-1.4 GW. The Nyköping project is also included in Studsvik’s state-aid application, which covers both Nyköping and Valdemarsvik.
5️⃣ Nordic Baseload Power AB has applied for site approval and state aid for two large-scale boiling water reactors at Barsebäck in Southern Sweden, with a combined capacity of around 2.5 GW.
6️⃣ Blykalla has submitted an application for a second reactor park at Untra in the Tierp municipality. The project consists of eight SEALER reactors with a combined capacity of 440 MW.
The ~8 GW figure is the maximum capacity covered across the six proposed sites, so it does not mean that all 8 GW will necessarily be built.
But Sweden has gone from reopening the door for new nuclear to having several companies developing projects across six different sites, using both conventional light-water reactors and advanced reactor technologies.
Aleh Cherp retweeted
Stay grounded! If EVs jump overnight to 50% of global car and light truck sales that only eliminates ~1% of oil demand/year. Cars and light trucks are only 21% of oil demand, they have an 18-year life. Plus BEVs & PHEVs made up less than 50% of Chinese vehicle exports in H1 2026.
Aleh Cherp retweeted
Call me crazy, but it would be a magnificent thing to be part of a 10s, 100s to 1000s of years project to restore the salmon, the forests, the beaches, the soils of this glorious planet, even while we reach out to the planets and stars.
Aleh Cherp retweeted
New from us: China's coal-fired power generation rebounded in the first half of 2026. Rapid expansion of coal power capacity led to worsening oversupply, reflected both in the increase of wasted wind and solar generation and in falling utilisation of coal power plants.
🇨🇳 NEW | #China – Coal power biannual review – H1 2026
💥 China’s #coal power generation rebounded 3.4% YoY, even as coal plants were used less intensively and wind & solar #curtailment rose 49%, enough to cover all new power demand
w/@GlobalEnergyMon
energyandcleanair.org/public…
Aleh Cherp retweeted
Annualized, my agentic AI energy use is around 1.1 MWh, and is responsible for as much emissions as a clothes dryer or half a round trip flight from SF to NYC. Not enormous compared to my overall footprint, but far from trivial!
Aleh Cherp retweeted
My latest at @thedispatch
The Data Center Backlash Is Really About Abundance
Keeping up with data center-driven electricity demand requires supply-side solutions, not bans.
thedispatch.com/newsletter/d…
Aleh Cherp retweeted
These folks are saying all the right things, mindful of the known risks, going for the right cost points. “My advice is to never work with it (H2) unless you absolutely have to. “👇 h/t @ramez
Last week the hydrogen electrolyzer team @terraformindies pulled off yet another first, the sustained production of >99.9% pure H2 from our vertically integrated, California-manufactured electrolyzer stack while it was coupled directly to a solar array at our Muroc desert test site.
WTAF?
Most commercial electrolyzers need carefully conditioned power from expensive battery-meditated backup systems. Ours runs directly off the sun. Clouds pass, the day turns to night, and we maintain purity from a stack whose Bill of Materials cost is well below $100/kW.
Terraform's single-minded focus on capex reduction has allowed us to convert sunlight to hydrogen in an unprecedented demo at a cost below $2/kg. If that wasn't enough, we have a crystal clear plan of steady execution to push that cost below $1/kg in the coming years.
Rather than linger on this point in response to experts-with-spreadsheets who said this was not only beyond my team, it was forbidden by known laws of physics, let me tell you a bit about how we actually pulled this off.
We started building this test site in March. Once the panels and electrics were in place the CO2 team were the first to demonstrate production on site. Close behind them the electrolyzer team planned the logistics necessary to project substantial operational ability into a hostile test site in the middle of nowhere. It's no good to find you're missing a wrench half way through the day!
Much of the test prep was completed before dawn, when the panels go live. The sun came up and the stack immediately started splitting water into hydrogen and oxygen. The team carefully monitored purity and flammability as the sun climbed through the sky. As designed, the stack warmed up and conducted even more power, maintaining solid production until late afternoon when the setting sun shaded the panels.
Terraform's synthetic fuel system is uniquely designed to follow the sun and extract the maximum possible value from cheap solar panels.
Hydrogen is a pernicious molecule. It leaks through and embrittles metals, burns almost invisibly at a wide range of mixtures in air, burns hot and fast and can easily undergo detonation transition, and has about half a dozen other spookily dangerous properties. My advice is to never work with it unless you absolutely have to. The Terraformer produces and consumes H2 in one compact discrete area with a minimum of complexity and fuss, and as expected this demo was completed in accordance with our rigorous safety standards and no unscheduled excitement!
This successful demonstration was also a profound milestone for the team after a testing anomaly last December compelled us to finally rip off the bandaid and move decisively towards the "future design" with half the parts but considerable complexity in assembly. No-one else makes electrolyzers this way and we, more than anyone, know exactly why. And also how to do it anyway, translating directly into a unique cost advantage.
A huge congratulation to Ken, Sherman, @ckalitin, Nikhil, Abdullah, and Aaron for their successful test campaign.
Terraform's hydrogen and CO2 are the chemical precursors for synthetic methane and methanol, which we make in our own synthetic fuel reactor.
Combined, we make oil and gas out of sunlight and air. We are breaking the geological and geographical monopolies on oil production.
In the limit, Terraform will deploy these electrolyzers by the millions and they will all be plug-and-play with solar PV arrays.
The Muroc smoke test campaign is far from over.
We will win!
Aleh Cherp retweeted
Huge news at THB
🚨US Extreme Weather and Climate Change Dashboard
A major new THB project just went live
rogerpielkejr.substack.com/p…
Aleh Cherp retweeted
The EU is targeting an increase electricity's share of Final Energy from 24% to 46% by 2040. The arithmetic of the Final Energy Fallacy makes this entirely unachievable. We need a course correction.
mliebreich.substack.com/p/eu…
Aleh Cherp retweeted
We are nearly done with the first order draft of the IPCC AR7 report (working group 1).
Register to review our work and provide feedback!
📣 IPCC opens registration for experts to review the First Order Draft of Working Group I contribution to Seventh Assessment Report.
The review runs from 10 Aug to 2 Oct 2026
Interested experts can register until 25 Sept 2026 🔗bit.ly/4vi25cq
🔗bit.ly/WGI7Fod
Aleh Cherp retweeted
Why-big-ai-labs-are-hiring-so-many-philosophers?
economist.com/science-and-te…
If they do, it's a big mistake -- philosophers are great in posing problems that people finds intruiging, but not too great in solving any of them. Why? Because they didn't have a laboratory to test their ideas, namely a computer.
































