Joe Deely (@jdeely) profile picture

Building an energy intelligence non-profit - Mission City Research.

Bay Area
Joined October 2009
Less than two years ago, peak solar output had just passed 8GW on @MISO_energy. I took a guess on when it might pass 20 GW - and came up with 2030. Wow, was I wrong! Solar passed 20GW on @MISO_energy two weeks ago. It's tough to predict such a fast growing tech. @ramez
Solar passes 8GW for the first time on @MISO_energy this past Wednesday. - 7GW in Sept - 6GW in May - 5GW in March Should pass 10 GW easily next year. 20GW by 2030? Thanks to @grid_status gridstatus.io/records/miso?r…
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Think about how much time was wasted at Google to prevent its AI chatbot from accidentally saying something that pissed off the president. Corruption is truly a tax on capitalism.
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Who at @Google programmed this into the model and when will it be fixed? @GoogleDeepMind @sundarpichai
Exhibit A: The real and present AI danger isn't the end of the world: It's giving government too much power over AI, and thus over the public infosphere. We must evaluate every proposed AI safety policy as to whether it could be abused by authoritarians.
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Part of Tesla/SpaceX marketing program.
This dude needs help. If Talarico wins he’s going to lose his mind.
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Absolutely no need to keep this plant burning coal past 2031. After great progress in both Arizona and NM this is a big reverse. More pollution and higher bills. @apsFYI @PNMtalk @SRPconnect @tepenergy
I’m sad to report that APS has signed a new take or pay coal contract with NTEC for the Four Corners power plant until 2038 and they have stressed any climate goals they have are solely “aspirational.” 😒🤦‍♀️😞 #aps #coal #energy #utilities
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US charging infrastructure continues to grow. Let's get some more EVs on the road.
More EV charging stations shipping out from @ElectricEraTech HQ today This one is heading to Lawerence Kansas ⚡️🔋
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Western coal generation fell 30% in Jan–Jul 2026 vs. 2025: 53 → 37 TWh across 11 states. About a third of that drop came from four plants that stopped burning coal: Intermountain (UT), Centralia (WA), Valmy (NV) and Cholla (AZ). The rest: coal plants running less. #WesternGrid
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Joe Deely retweeted
First power at Cape Station. - 33 MW today - 66 MW due by Jan 1 - 400 MW Phase 2 by 2028. At an 85% capacity factor, Phase 1 + Phase 2 (~500 MW) is ~3.7 TWh a year, close to a quarter of all US geothermal generation in 2025 (16 TWh). EGS Liftoff ! @fervoenergy #WesternGrid
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How often does new version of this come out - monthly? weekly?
Inference engineering doesn't have a textbook yet. So we wrote one. 264 pages, free PDF and audiobook.

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First power at Cape Station. - 33 MW today - 66 MW due by Jan 1 - 400 MW Phase 2 by 2028. At an 85% capacity factor, Phase 1 + Phase 2 (~500 MW) is ~3.7 TWh a year, close to a quarter of all US geothermal generation in 2025 (16 TWh). EGS Liftoff ! @fervoenergy #WesternGrid
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Ok let's move on to New Mexico for next #WesternGrid post in this week's series. - Huge new wind project - SunZia - 550 miles of new transmission.
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Gonna put some #WesternGrid news out here this week. First up an update on Xcel in Colorado. 10 projects, ~2.9GW of wind/solar/storage/gas. All going live before EOY 2030.
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Let's move to Arizona for today's #WesternGrid news. Arizona H1 2025 vs H1 2026, by fuel: Natural gas: +0.6% — basically flat Coal: -28.9% (3,900 → 2,771 GWh) Solar: +23.5% (7,491 → 9,251 GWh) Wind: +11.8% (1,777 → 1,988 GWh) Solar is absorbing AZ's growth, not gas.
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Joe Deely retweeted
Gonna put some #WesternGrid news out here this week. First up an update on Xcel in Colorado. 10 projects, ~2.9GW of wind/solar/storage/gas. All going live before EOY 2030.
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As a reference point the US currently has about 230 GW of solar capacity. Source: eia.gov/electricity/monthly/…
U.S. solar module production reaches historic 100 GW landmark: The United States crossed 100 GW of cumulative solar PV module production during Q2 2026, according to a new bottom-up factory-level analysis by… dlvr.it/TVZcDZ #Photovoltaics #EnergyStorage #RenewableEnergy
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No-brainer - remote inspections of rooftop solar installations. Let's hope Governor Newsom signs this. "That wasted time gets passed to the homeowner, adding $600 to $1,000 to the cost of a single solar, battery, or heat pump installation." pv-tech.org/california-advan…
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Latest update on solar/wind/battery capacities from @ERCOT_ISO Source= ercot.com/files/docs/2022/02…
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Joe Deely retweeted
This is a really big deal! Fervo now has 1,064 MW under contract - most of which comes online by 2028. Google has an option for another 600 MW by 2030. If the 1.1GW operates at a 85% CF this = 8TWh of annual generation. Total US geothermal generation was 16TWh in 2025.
Excited to share the news of this groundbreaking PPA today. Our multi-year partnership with Google has been important for Fervo’s growth, and we are excited to take the next step with them with this new 400 MW deal for enhanced geothermal power. wsj.com/business/energy-oil/…
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