EL26-70-000 · 2026-06-18 · FERC

MISO show cause order

Read topic-matched comments in EL26-70

Topics in the text: Connecting load and generation · Cost allocation · Filing procedure

Responses and related views

MISO proposes parallel studies for paired load and generation

Midcontinent Independent System Operator · Related public statement

MISO proposed LARS in a separate section 205 docket. It argued that modeling a matched pair could identify upgrades for the combination instead of each project separately. This was one proposed response to the June concerns, not a final decision on the full show cause case.

PDF pp. 2–3, 15

Eolian wants nearby generation considered for permanent service

Eolian · Direct response

Eolian sought clarification that generation located electrically close to a large load could qualify for permanent limited service if it could constrain grid withdrawals over the long term. FERC dismissed the request because the preliminary order was not final.

Eolian request and FERC discussion (unpaginated)

Source sections

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Opening text

opening text · Topic match: Cost allocation

195 FERC ¶ 61,212 UNITED STATES OF AMERICA FEDERAL ENERGY REGULATORY COMMISSION Before Commissioners: Laura V.
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D. Extending New Transmission Services to Eligible Customers Taking Service on

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D.
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E. Interconnection Customers Serving Electrically Proximate Large Load and Co-

printed heading · Topic match: Connecting load and generation

EL26-70-000 - 3 - Over the past year, the Commission has taken action in numerous dockets1 to address issues related to (a) unprecedented increases in requests for transmission service to serve large loads2 and (b) growing interest in the co-location of loads with generating facilities (co-location…
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I. Background

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Background

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Background
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A. Growth of Large and Co-Located Loads and ANOPR

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Dep’t of Energy, Resource Adequacy Report: Evaluating the Reliability & Security of the United States Electric Grid (July 2025), www.energy.gov/sites/default/files/2025- 07/DOE%20Final%20EO%20Report%20%28FINAL%20JULY%207%29.pdf). 17 Id. (citing NERC, 2024 Long- Term Reliability Assessment 8 (Dec.…
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B. Recent Proceedings Addressing Large and Co-Located Loads

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EL26-70-000 - 14 - customers serving co-located load and Eligible Customers taking transmission service on behalf of co-located load.47 Specifically, the Commission found that the PJM tariff was unjust and unreasonable because there is a lack of sufficient clarity or consistency as to the rates,…
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II. MISO’s Existing Processes

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A. Existing Tariff Processes

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Although Attachment FF-ATCLLC includes ATC’s distribution-to-transmission interconnection request process and load interconnection procedure, Attachment FF-ATCLLC does not include provisions specific to large loads. 76 As a result, two of Xcel Energy Services Inc.’s affiliate transmission owners…
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B. Recent Stakeholder Proceedings in MISO

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As such, and as the Commission explained in the April Order Regarding Intent to Act, we find that the Commission must now take further action to ensure that MISO promptly proposes revisions to ensure that its Tariff remains just and reasonable.
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III. Discussion

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Discussion

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We emphasize that we will not grant such abeyances reflexively, that any abeyance will be limited to 90 days, and that we will look with great disfavor toward requests to extend the abeyance period.
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A. Transmission Service to Eligible Customers on Behalf of Large Loads

printed heading · Topic match: Retail and wholesale authority

EL26-70-000 - 36 - other Eligible Customers seeking transmission service on behalf of load;148 create a substantial risk of cost shifts if the large load additions do not materialize as planned;149 and distort load forecasts.150 Clear and consistent study procedures that include readiness…
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B. Cost Shifting Risk Among Transmission Customers

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EL26-70-000 - 50 - Several commenters discuss the risk of cost shifting among transmission customers that could result from transmission service requests by Eligible Customers on behalf of large loads.182 Commenters also argue that retail-level large load tariffs do not protect wholesale…
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C. Co-Location Arrangements and Load with Behind the Meter

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Additionally, in the PJM Co-Location Order, the Commission found that it was necessary to clarify that interconnection customers seeking to use new generating facilities to serve co-located load may (1) request interconnection service at a level below the generating facility’s maximum facility…
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D. Extending New Transmission Services to Eligible Customers Taking

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Finally, we note that the Commission has found it just and reasonable that, in order for an Eligible Customer to take interim NITS, firm contract demand transmission service, and non-firm contract demand transmission service, an Eligible Customer must have necessary control technologies and/or…
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E. Interconnection Customers Serving Electrically Proximate Large Load

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Given that generator interconnection service in and of itself does not convey transmission service, we encourage MISO to consider, in responding to these concerns, what type of transmission service an Eligible Customer will need to take on behalf of the electrically proximate large load or large…
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F. Informational Report

printed heading · Topic match: Reliability and curtailment

The informational report must include a detailed schedule of key milestones, such as stakeholder or MISO Board votes, that includes the estimated date on which MISO expects to file any such proposals with the Commission.
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IV. Briefing Questions

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We find that there may be a variety of possible approaches to protect customers from significant cost shifts associated with Network Upgrades triggered by large loads.
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I. Overview of Today’s Orders

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Overview of Today’s Orders In each of today’s orders to show cause, the Commission identifies a series of issues raised by the ongoing growth of large loads, directs briefing on whether existing tariffs remain just and reasonable in light of those developments, and describes possible solutions to…
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II. The Commission Needs Good Records to Ensure Reasoned Decision-Making

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The Commission Needs Good Records to Ensure Reasoned Decision-Making I first want to emphasize that the Commission needs active participation from interested stakeholders to develop thorough records in each region.
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III. The Commission Needs to Pursue Meaningful Customer Protection

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As we develop the new infrastructure, many have raised concerns about whether these costs are being fairly assigned to new and existing customers, whose benefits must be commensurate with the costs they pay.
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IV. The Commission Needs to Understand the Implications of Extending New

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While it is important to identify innovative solutions that can adapt to the needs of the system, the Commission and grid operators must also be careful not to seeks-nevada-tariff-to-shield-ratepayers-from-data-center-costs/822250/. 6 E.g., Travis Kavulla, How Will Data Centers Pay for Power?,…
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V. The Orders Recognize the Importance of Evaluating Advanced Transmission

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The Orders Recognize the Importance of Evaluating Advanced Transmission Technologies Lastly, today we preliminarily find that each RTO/ISO’s tariff is unjust and unreasonable because the tariff lacks clear and consistent provisions requiring the evaluation of alternative transmission technologies…
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VI. Conclusion

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Conclusion

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While this is a long journey, even so, we must continue to move at breakneck pace to win the AI race.
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