Mexico Blackouts Hit Yucatán Businesses as CFE Restores Power After ‘Vandalism’
MEXICO · ECONOMY
Key Facts
—The outage: A mega blackout hit Yucatán, Quintana Roo, Chiapas and parts of Campeche on the night of Monday, 31 August, after two 400 kV transmission lines went down.
—The cause: State utility CFE blamed vandalism on the insulator chains of both high-voltage lines.
—The restoration: Supply was back to 25 percent just after midnight, 55 percent an hour later and 100 percent after 3 a.m. on Tuesday.
—The business toll: Every merchant surveyed by Mérida’s commerce chamber reports recurring outages; 86 percent have had to suspend operations partially or fully.
—The outlook: Yucatán’s state government does not expect the peninsula’s power problems to be fully solved before 2028.
The latest Mexico blackouts in Yucatán lasted only hours, but they landed on an economy already worn down by years of outages — with businesses in Mérida counting spoiled goods, lost sales and damaged equipment.
Mexico’s southeast suffered its worst blackout of the year on Monday night. The Federal Electricity Commission (CFE) confirmed partial supply failures across Yucatán, Quintana Roo and Chiapas after two high-voltage transmission lines disconnected; local media also reported outages in parts of Campeche. The Mexico blackouts in Yucatán and its neighboring states left millions without power for hours — and reignited a debate about the fragility of the peninsula’s grid that local business leaders say is already costing them dearly.
The Mexico blackouts of Monday night
The outage began late on 31 August when two 400 kV transmission lines — the backbone that carries power across the region — dropped out of operation. The CFE said it coordinated with the National Energy Control Center (Cenace) and the governments of the three affected states, synchronizing the Riviera Maya Valladolid generating station to recover part of the lost load.
Progress came in stages. Just after midnight, the utility reported service restored to 25 percent of affected users; about an hour later it said 55 percent were back online, after crews reached the damaged structures and replaced insulators on one of the two lines. Shortly after 3 a.m. on Tuesday, 1 September, the CFE announced the supply had been fully restored in all affected states. Hospitals in the region kept power through the grid or emergency plants throughout the event, the utility said. It never disclosed how many users were affected.
CFE blames vandalism
The company’s explanation is unusual: sabotage, not system failure. “During the inspection of the infrastructure it was identified that the cause was acts of vandalism on a 400 kV high-voltage structure,” the CFE said, specifying that the insulator chains of both lines had been damaged. It did not say where exactly the damage occurred, who might be responsible, or whether authorities had opened an investigation.
The attribution matters because the region’s business community has long argued the outages are structural. If vandalism is confirmed, Monday’s event was a crime rather than a grid failure — but it also exposed how little redundancy the peninsula’s transmission system has when two lines go down at once.
The business toll in Mérida
For businesses in Mérida and across Yucatán, the mega blackout was only the latest entry in a long ledger. A July survey by the Mérida Chamber of Commerce, Services and Tourism (Canaco) among its affiliates in Mérida, Valladolid, Tizimín, Motul, Ticul, Tekax and Peto found that 100 percent of respondents suffer recurring power cuts. Some 57 percent report an outage once a week; 43 percent report several cuts per week. Duration ranges from half an hour to more than two hours.
The operational impact is severe: 85.7 percent of the businesses surveyed said they had to suspend activities partially or totally when the power fails; only those with their own backup generation — 14.3 percent — managed to keep operating. “When the power goes out in a shop, you lose the sales system, the card terminal stops working, and the small stores that use refrigerated merchandise can lose it,” Canaco president José Enrique Molina Casares told Diario de Yucatán, listing spoiled perishables, refrigeration equipment damaged by voltage swings, and lost electronics and computers. The chamber has not put a peso figure on the damage, but Molina Casares is blunt: “There are important impacts on commerce.”
A grid under strain
The peninsula’s weakness is well documented. On 3 June, Yucatán and Quintana Roo suffered a 19-minute interruption, also tied to the loss of two high-voltage lines. On 19 June, another blackout hit the peninsula when two private generating plants went offline, affecting more than 119,000 users. A former Cenace director warned in April that Mexico would break electricity-demand records this summer, with the Yucatán peninsula among the critical points; 150 megawatts of portable emergency generation were being moved in to reinforce it.
The CFE, for its part, has been publicizing improving numbers: 273,452 supply interruptions nationwide in the first seven months of 2026, down 10 percent year on year, and average restoration times cut from 25 to seven hours. In Yucatán, those national averages offer little comfort. Molina Casares says the state government itself has set 2028 as the horizon for definitively solving the problem — meaning, he concedes, at least two more years of outages, some of them caused by the very works meant to fix the grid.
What comes next
Two questions now hang over the southeast after these Mexico blackouts. The first is investigative: whether the vandalism claim is confirmed and who damaged strategic infrastructure — an uncomfortable prospect in a region whose economy runs on tourism. The second is structural: how quickly new transmission capacity and generation can be added to a peninsula whose demand keeps growing with hotels, industry and migration. For the businesses surveyed by Canaco, neither answer can come soon enough. Follow the developing story in The Rio Times’ Mexico coverage and the initial reports by El Financiero.
Frequently Asked Questions
What caused the blackout in Yucatán, Quintana Roo and Chiapas?
Two 400 kV transmission lines disconnected on the night of 31 August 2026. The CFE says inspections found vandalism on the insulator chains of both high-voltage lines. Parts of Campeche also reported outages.
How long did the outage last?
The CFE restored 25 percent of supply just after midnight, 55 percent about an hour later, and announced full restoration shortly after 3 a.m. on Tuesday, 1 September — a total of several hours.
How are businesses in Mérida affected by power cuts?
A July survey by the Canaco chamber found 100 percent of affiliated merchants suffer recurring outages; 85.7 percent had to suspend operations partially or fully. Reported damage includes spoiled perishables, broken refrigeration equipment and lost sales.
When will Yucatán’s power problems be solved?
According to the Mérida chamber’s president, the state government has set 2028 as the horizon for a definitive solution. Emergency generation of 150 megawatts has been deployed to reinforce the peninsula in the meantime.
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