10JUN

Five grid operators miss FERC deadline

1 min read

10:06UTC

Five US grid operators missed the Federal Energy Regulatory Commission's 17 August show-cause deadline on large loads and were granted abeyance until 16 November.

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Key takeaway

The five operators now answer the commission on large loads by 16 November, not 17 August.

Five US grid operators missed the Federal Energy Regulatory Commission's 17 August show-cause deadline on large loads and were granted abeyance until 16 November⁠¹. A show-cause order requires its recipient to explain why its rules should not be changed. Abeyance holds the proceeding open without that explanation being filed.

Six grid operators had already told the commission in July that none of them can serve data-centre demand under current rules. What has slipped is the deadline for setting out what they would put in place instead. The abeyance keeps the docket alive and pushes the answer to November, which leaves the existing connection rules for very large loads running through the autumn on markets that have already said those rules do not work.

Deep Analysis

In plain English

US energy regulators told grid operators to explain by 17 August how they plan to handle huge new electricity users like data centres. None of the five operators made that deadline, so the regulator has given them until 16 November instead. Until then, the existing rules for connecting big new loads stay exactly as they were.

Deep Analysis

Root Causes

FERC's show-cause process requires grid operators to justify existing interconnection rules or propose changes, but designing new large-load rules touches rate design, reliability standards and existing customer contracts across each operator's footprint, work that typically takes regulatory staff many months to draft and internally clear before filing.

Missing the original deadline reflects that drafting load, not a decision to delay for its own sake, which is why the commission granted abeyance rather than penalty.

Escalation

The rules governing how US grid operators must handle large new electricity demand remain unresolved for a further three months, extending the period in which large-load connection policy is set case by case rather than under a settled framework.

Sources:Stoel Rives LLP

Mentions:FERC →PJM Interconnection →MISO →ISO-NE →CAISO →NYISO →

First Reported In

Update #14 · Brazil bill ties tax break to a water cap

Stoel Rives LLP· 8 Sept 2026

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Causes and effects

Caused by

Six US grid operators file, none say yes

The six grid operators' July finding that current rules cannot serve data-centre demand is what FERC's 17 August large-load deadline was meant to resolve before abeyance was granted.

Occurred 23 Jul 2026

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This Event

Five grid operators miss FERC deadline

The American rules for connecting very large electrical loads stay unchanged until at least November.

Led to

NERC large-load rules pass first ballot

Grid operators' abeyance on FERC's large-load docket left NERC's own CLO ballot as the next binding step.

Occurred 18 Sept 2026

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Written with AI from Lowdown's published reporting. Not individually reviewed by an editor. Editorial standards.