05/29/2026
Mexico didn't write new energy NOMs today.
It did something importers should care about more: it changed which tariff codes have to comply with them.
Mexico's Secretaría de Economía amended the General Foreign Trade Rules (DOF, May 29). In force tomorrow, May 30.
Here's the precise change:
The four 2025 energy-efficiency NOMs were already published last year by the Secretaría de Energía — covering pumps, A/C, and single- and three-phase motors.
What changed today is the customs side. Annex 2.4.1 — the list that maps tariff codes to the NOMs they must meet — was updated to point at the 2025 versions instead of the older ones.
And the mapping itself moved, not just the references:
→ Two three-phase motor codes were added (8501.51.02, 8501.51.99) — now required to demonstrate compliance with NOM-016-ENER-2025.
→ One pump code was removed (8413.60.01) — submersible pumps fall outside the new NOM-004's scope, so they leave the list.
The part that keeps you calm:
Certificates issued under the prior norms stay valid until they expire. No emergency recertification.
But "my certificate is still valid" and "my code is still on the list" are two different questions. This change touches the second one.
For legal specifics, consult your trade counsel. For what it means at the border — on both sides — that's our job.
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When did you last check your tariff codes against the current NOM annex?