_Regulation · Operational restriction_

# FERC orders the six RTOs and ISOs to justify or reform large-load interconnection rules

Canonical ID: `0ceb781a-6e79-4b89-90bc-c49c89934311`

- **Jurisdiction:** [United States](/locations/united-states.md) (id: `aa8b9c05-c836-4021-801f-59801970401e`)
- **Kind:** `operational_restriction`
- **Status (derived):** in_effect
- **Effective:** 2026-06-18

On June 18, 2026 FERC issued Section 206 show-cause orders directing each of the six grid operators it regulates (PJM, MISO, SPP, ISO-NE, NYISO and CAISO) and their transmission owners to either justify or reform the tariff terms that govern how data centers and other very large loads interconnect, including flexible, co-located, and behind-the-meter-generation loads. The orders press the operators to create transmission-service options tailored to large flexible loads and to offer interim, non-firm service while network upgrades are built, with responsive tariff filings due within 60 days (Docket RM26-4). ERCOT is not FERC-jurisdictional and is not covered by these orders; Texas is pursuing its own path.

## Sources (3)

1. https://www.ferc.gov/news-events/news/fact-sheet-ferc-directs-nations-largest-grid-operator-create-new-rules-embrace
2. https://www.ferc.gov/rm26-4
3. https://www.whitecase.com/insight-alert/ferc-orders-grid-operators-promptly-revise-or-justify-interconnection-rules-data

## Common questions

### What does FERC orders the six RTOs and ISOs to justify or reform large-load interconnection rules cover?

On June 18, 2026 FERC issued Section 206 show-cause orders directing each of the six grid operators it regulates (PJM, MISO, SPP, ISO-NE, NYISO and CAISO) and their transmission owners to either justify or reform the tariff terms that govern how data centers and other very large loads interconnect, including flexible, co-located, and behind-the-meter-generation loads. The orders press the operators to create transmission-service options tailored to large flexible loads and to offer interim, non-firm service while network upgrades are built, with responsive tariff filings due within 60 days (Docket RM26-4). ERCOT is not FERC-jurisdictional and is not covered by these orders; Texas is pursuing its own path.

### Where does FERC orders the six RTOs and ISOs to justify or reform large-load interconnection rules apply?

FERC orders the six RTOs and ISOs to justify or reform large-load interconnection rules is recorded as a operational_restriction applying in United States on the DEPLOY registry.

### When did FERC orders the six RTOs and ISOs to justify or reform large-load interconnection rules take effect?

FERC orders the six RTOs and ISOs to justify or reform large-load interconnection rules is recorded as effective June 18, 2026 on the DEPLOY registry.

### Is FERC orders the six RTOs and ISOs to justify or reform large-load interconnection rules still in effect?

FERC orders the six RTOs and ISOs to justify or reform large-load interconnection rules is currently in effect and applies to covered operators in the named jurisdiction.

### What types of robots does FERC orders the six RTOs and ISOs to justify or reform large-load interconnection rules apply to?

FERC orders the six RTOs and ISOs to justify or reform large-load interconnection rules is recorded as cross-cutting on the DEPLOY registry, meaning it does not single out one robot form factor. Operators of any covered robot type in United States should review the underlying primary sources for applicability.


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