--- title: "MISO: what it means · The AI Compute Race · DRYBURGH" source: https://dryburgh.com/vol1/glossary/miso description: "MISO: The regional grid operator that controls the interconnection of Hyperion's generators…" --- # MISO What does “MISO” mean? MISOThe regional grid operator that controls the interconnection of Hyperion’s generators, and one of the four grid operators whose transmission plans chapter 6 sums. *Chapter 6.* From *The AI Compute Race*. [Read the book](https://dryburgh.com/vol1#buy) ## Where the book uses it - [Chapter 6 — Firm, Around-the-Clock](https://dryburgh.com/vol1/notes/chapter-6)Where the electricity comes from: grid queues, transformers, turbines and the firm power a datacenter needs every hour of the year, on calendars the buildout does not control. ## Sources that use it - MISO, “LRTP Tranche 2.1,” fact sheet, December 2024 (“Tranche 2.1 includes 24 projects and 323 facilities across the MISO Midwest subregion estimated at $21.8 billion and targeted to go in service from 2032 to 2034. It builds a 3,631-mile 765 kV and 345 kV backbone”; “approved by MISO’s Board of Directors on December 12, 2024”). [In the Sources](https://dryburgh.com/vol1/sources/company#miso-tranche21-dec24) - Federal Energy Regulatory Commission, “FERC Launches Aggressive Targeted Action to Speed Large Load Integration,” 18 June 2026 (six region-specific show-cause proceedings: PJM, MISO, SPP, CAISO, NYISO, ISO-NE). [In the Sources](https://dryburgh.com/vol1/sources/filing#ferc-large-load) - Federal Energy Regulatory Commission, notational orders of 14 August 2026 (all six large-load show-cause cases held in abeyance) (ISO New England Inc. and the Participating Transmission Owners Administrative Committee, Joint Motion to Hold Proceeding in Abeyance, 3 August 2026, eLibrary accession 20260803-5083 (EL26-72); the 14 August notational orders act on EL26-67 through EL26-72; the motion opened is ISO New England’s and its transmission owners’ in EL26-72 alone; whether the other five dockets carry parallel motions was not shown by the notational-orders page (k-A, 12 September 2026); the eLibrary docket sheets, read through Browserbase on 27 September 2026, show each of the six cases held by a 14 August 2026 order on a motion filed in that case, PJM’s of 28 July and SPP’s, NYISO’s, MISO’s and ISO New England’s of 3 August, most for 90 days and SPP’s until 20 November 2026, CAISO’s by an order granting rescission and abeyance requests; on 21 September 2026 the Commission issued an order dismissing requests for rehearing and clarification in five of the six). [In the Sources](https://dryburgh.com/vol1/sources/filing#ferc-abeyance) - Louisiana Public Service Commission, transcript of the Business and Executive Session of 20 August 2025, Plaquemine, Commissioners Davante Lewis and Jean-Paul Coussan questioning the Staff’s consultant Lane Sisung (Docket U-37425, Entergy Louisiana’s application for three combined-cycle units, 2,262 MW, the data center’s need for “significant, firm, around-the-clock power” in Assistant Secretary Bowman’s summary of the application, p. 6; the 2.2 GW compute figure, p. 29; the four-to-one vote; Sisung, of United Professional Company, “hired as outside consultant on this project”, for Staff, p. 42: the minimum bill covering 100 percent of the three generators’ cost including overruns and purchased bridging generation, the 15-year term and the parent guarantee on a termination fee set at “the originally projected cost,” pp. 44–45; Commissioner Lewis, in questioning, that the fee “doesn’t adjust to the actual cost the way that the minimum payments do,” p. 47:6–12; Sisung’s answer, “that is one of the things we raised in testimony” and “there may be a little bit of gap,” p. 47:13–18; a session at which the matter was voted, the contested hearing having been held on 15–17 July 2025, pp. 6–7; p. 91: “I believe my most important job as a regulator is to trust, but verify”, and ten lines later “I believe my most important job is to center the public interest”; Lewis’s pre-vote statement, pp. 90:22–92:11, rests his dissent on other grounds; the roll call at pp. 92–93, Commissioner Lewis the no; Sisung continues in the same sentence, p. 47:17–20, “but then we will have that generation and the value of that generation. It becomes the property of Entergy. It becomes the property of the ratepayers”; pp. 54–55 on what was withheld: “It’s a public settlement. There is one attachment that’s related to the deferral … that is confidential, but the rest of it is public” and “certain things that for market sensitive reasons are being kept confidential from the public”; pp. 91:15–16, between the two: “Three new self-build gas generators for one customer without a competitive bid process” (the transcript prints “self -build”), all three in the statement Lewis asked to make “before we do the vote”, p. 90:18–19; re-read 27 September 2026 against the held text; Larry Hand for Entergy Louisiana, pp. 29:21–30:2: “on the compute side, the 2.2, you know, gigawatt number”, “they could use up to the 2.2. And there’s some ancillary load, but I’m just answering your question at 2.2. We plan to that.”; Sisung, answering Commissioner Coussan on what is withheld, p. 55: “There are parts of this transaction that the customer doesn’t want the public to know because it would create competitive disadvantages for them, and that’s what has been kept confidential”; Commissioner Lewis on the word of the day: “unprecedented,” “I think is the word we’ve been using today”; Commissioner Lewis, p. 51:8–9: “It is a precedent setting decision.”; Assistant Secretary Bowman, p. 6:1–5, on what Entergy filed on 30 October 2024: “three combined cycle combustion turbines, totaling 2,262 megawatts, a new 500-kV transmission line, new substations, and certain equipment upgrades at an existing 500-kV substation”, the transcript printing “equip ment”; Larry Hand for Entergy Louisiana, p. 34:14–18, on MISO: “we did submit these three units that are at issue here” into its ERAS process, “highly optimistic that those units, the Franklin Farms 1 and 2 and Waterford 5 will be evaluated for interconnection through that ERAS process in a timely way”, the transcript printing “interconnect ion”). [In the Sources](https://dryburgh.com/vol1/sources/filing#lpsc-transcript-aug25) - Robert Boswall, Reyk Knuhtsen, Jeremie Eliahou Ontiveros, Oliver Kennon and Dylan Patel, “$12B of US ratepayers’ money wasted on a modeling mistake and PJM wants to do it again,” *SemiAnalysis*, 16 August 2026 (the free portion of a paid post, 8,463 of 10,638 words by the publisher’s count and the title’s $12 billion, a result of the firm’s rebuilt model, not printed in this book; in a paragraph that opens “Happy to be corrected”: “93% of PJM capacity settles at the clearing price, against 15% in MISO’s residual auction, monthly rolling in New York, bilateral contracts in California, none in Texas”) (SemiAnalysis sells subscriptions, consulting and its own models of chip, memory and datacenter supply into the markets it measures; its method annex is for paid subscribers and was not read; held in the Library since Sourcing’s capture of 5 October 2026). [In the Sources](https://dryburgh.com/vol1/sources/research#semianalysis-pjm-aug26) ## Related terms - [Interconnection](https://dryburgh.com/vol1/glossary/interconnection) - [Hyperion](https://dryburgh.com/vol1/glossary/hyperion) - [Backstop](https://dryburgh.com/vol1/glossary/backstop) - [Batch Zero](https://dryburgh.com/vol1/glossary/batch-zero) - [Behind the meter](https://dryburgh.com/vol1/glossary/behind-the-meter) - [Beignet](https://dryburgh.com/vol1/glossary/beignet) - [Bridge power](https://dryburgh.com/vol1/glossary/bridge-power) - [Capacity auction](https://dryburgh.com/vol1/glossary/capacity-auction) - [Combined-cycle](https://dryburgh.com/vol1/glossary/combined-cycle) - [Curtailment](https://dryburgh.com/vol1/glossary/curtailment) - [Demand response](https://dryburgh.com/vol1/glossary/demand-response) - [Early-termination fee](https://dryburgh.com/vol1/glossary/early-termination-fee) From the glossary of The AI Compute Race. - [Campuses](https://dryburgh.com/vol1/ledger) - [Tests](https://dryburgh.com/vol1/tests) - [Scorecard](https://dryburgh.com/vol1/scorecard) - [Data](https://dryburgh.com/vol1/data/releases) - [Chapter by chapter](https://dryburgh.com/vol1/companion) - [The record at a glance](https://dryburgh.com/vol1/observatory) - [The machine](https://dryburgh.com/vol1/machine) - [One campus, four futures](https://dryburgh.com/vol1/hyperion) - [Glossary](https://dryburgh.com/vol1/glossary) - [People](https://dryburgh.com/vol1/people) - [Sources](https://dryburgh.com/vol1/sources) - [Notes](https://dryburgh.com/vol1/notes) - [Where the book was wrong](https://dryburgh.com/vol1/corrections) - [Where its sources were wrong](https://dryburgh.com/corrections?book=vol1) - [The Paper](https://dryburgh.com/vol1/paper) - [Consent](https://dryburgh.com/vol1/consent) - [Who builds and pays](https://dryburgh.com/vol1/parties) *The AI Compute Race: Five Races, One Machine* is a book by Lee S. Dryburgh, the first volume of THE COMPUTE ECONOMY, published by Dryburgh, an imprint of Contestra OÜ, Tallinn, Estonia; its record closes on 8 November 2026. [About the book](https://dryburgh.com/vol1)[Tell me when it is out](https://dryburgh.com/vol1#notify)