In automotive there is one date that is not negotiable. Start of production is set by the OEM's programme, tied to a model launch, and it arrives as a fact rather than a proposal. Around that date sit the tooling, the validation runs and the penalties.
What almost never arrives tied to that same date is the power. SOP is contractual; energization is not.
“Activity was affected by unscheduled technical stoppages caused by problems in the electricity supply.”
Bank of Mexico, Regional Economies Report, January–March 2026 — on the automotive industry
This is not a prospective risk: it is the central bank documenting that automotive plants in Mexico are already stopping lines. Nor is it isolated. In the BBVA Research–AMPIP survey, 55% of industrial park operators named inadequate electricity supply as the leading factor limiting the arrival of new tenants — more than double insecurity, at 26%.
LOAD-CENTRE CONNECTION
611
requests pending at CENACE · ~13 GW
NUEVO LEÓN
159
of those requests · ~3,390 MW in one state
SUBSTATION TRANSFORMER
85–110
weeks · units of 25 to 50 MVA
ONE HOUR OF STOPPED LINE
US$2.3M
large plant · double what it was in 2019
Three queues that now compound instead of overlapping
1. The interconnection you cannot see. Of the 611 pending requests, roughly 270 were filed in 2023 or earlier, against a statutory maximum of 170 business days. And CENACE's queue files carry no node column and no available-capacity column: they do not say where there is room.
2. The equipment behind the meter. Substation transformers of 25 to 50 MVA at 85–110 weeks, medium-voltage switchgear at 60–80, large gensets at 90–110. The operating rule: if it is not ordered 12 to 18 months before site mobilisation, the schedule is already late.
3. The grid that arrives after your plant. Of 154 transmission works scheduled for 2025–2030, 30 are complete. And project I19, the only one addressing northeast–centre congestion, was due in July 2025 and has no public status.
The full briefing also covers why the gap between kW and kVA is wider in automotive than in any other sector — the real power factor of a welding bus, what that power factor costs on the CFE bill, and why a battery cell plant does not connect to the grid: it forces one to be built.
NO-COST ASSESSMENT
Does your SOP depend on capacity nobody has confirmed?
The ECRA — Energy Capacity Readiness Assessment — is a structured read of available capacity, interconnection path and schedule risk for your site. It returns a Score from 0 to 100 and an electrical risk classification, before the land is closed or the date is committed.
We design, build and operate industrial electrical infrastructure of up to 20 MW on site under a turnkey EPC model, including full permitting with CENACE, CFE and the CNE.
At TECMA, we provide comprehensive technical solutions focused on optimizing, maintaining, and improving facilities and equipment, ensuring fast, professional, and high-quality service.
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