North American Electric Reliability Corporation

TPL-008-1

Transmission System Planning Performance Requirements for Extreme Temperature Events

Latest Edition2026-04-01

Country ScopeNorth America

CategoryReliability Standards / Transmission Planning

Record Typestandard

ApplicabilityEnforceable after approval or adoption by the applicable regulatory authority

Applicability Summary

NERC reliability standard in the TPL family addressing transmission system planning performance requirements for extreme temperature events.

Notes

NERC page label: Mandatory Subject to Enforcement. Standard document modified June 24, 2026. Public notes: Filing/Order Docket No. RD25-4-000 See the bottom of the TPL-008-1 Reliability Standards page for related documents.