Cuba's ongoing power crisis deepens amid systemic failures

Cuba’s power crisis has moved from chronic scarcity into a sustained reserve-collapse scenario, with the national grid repeatedly failing to cover even baseline demand and peak-hour deficits now regularly approaching 1.9 GW. What began in early August as severe but familiar load shedding has, by late October, hardened into a pattern of continuous nationwide disruption, repeated thermal-unit failures, and fresh transmission instability. The most consequential recent development is the October 26 forecast of a 1,900 MW peak deficit, up from 1,760 MW the previous day, with only 1,030 MW of available generation against 2,900 MW of demand and four generating units out of service. The crisis now carries not only energy-sector implications but growing political, security, transport, and public-services risk, especially as outages in Havana remain visible and prolonged.

From Shortfall To Structural Breakdown

The deterioration was already visible on August 2, when Unión Eléctrica (UNE) published a daily system status showing available generation below demand, blackouts already underway, and a large evening deficit forecast. By August 6, the crisis had measurably worsened: Cuba’s state utility reported uninterrupted service disruption through the previous day and overnight, with a realized outage impact of 1,819 MW at 21:40 and a projected evening shortfall of roughly 1,660 MW, implying affected load near 1,730 MW. That crossed the previously watched 1.5 GW threshold and signaled another night of extended rotating blackouts.

UNE’s August 7 update added an operational cause to the worsening picture. The evening peak deficit again reached about 1.8 GW, exceeding plan because a Nuevitas generating unit failed to synchronize for peak demand as scheduled. That mattered because it showed the problem was not only insufficient fuel or high demand, but also weak execution and unreliable unit return assumptions.

By August 25-26, the system had moved deeper into acute scarcity. UNE projected an evening peak deficit of 2,170 MW, and a second same-day update reinforced that the government was still managing scarcity rather than restoring reliability. The political reading at that stage was important: the outages were severe enough to erode legitimacy and strain local conditions, but reporting still did not indicate a new nationwide protest wave directly tied to the blackouts.

A brief easing appeared in mid-September. On September 15, according to state utility reporting cited by Diario de Cuba, the National Electric System posted its lowest generation deficit since June, with only three major thermal units out and shorter daytime outages in some Havana and other urban circuits. But officials themselves warned that the improvement was temporary. That warning proved accurate almost immediately.

September’s Failed Stabilization

By September 24, the short-lived easing had reversed. Granma published UNE’s daily report stating that electricity service had been affected for the full previous 24 hours and remained disrupted into the early morning. The peak shortfall also ran above plan because demand exceeded forecasts, undercutting any suggestion that the system was returning to manageable scheduled outages.

A second September 24 update added more granular evidence that the crisis remained severe and prolonged. Local utility-linked monitoring showed Havana with about 349 MW affected and 137 distribution circuits impacted, while outages of roughly 23-32 hours continued in parts of the capital and eastern provinces. At the same time, elTOQUE reported that UNE had not yet published its September 24 national bulletin, leaving September 21 as the latest cited system snapshot. That snapshot showed projected peak demand of about 3,150 MW against available generation of only about 1,215 MW.

That reporting lag is itself a signal. For Mexico’s energy desk, reduced visibility from UNE complicates contingency assessment and makes it harder to judge whether Havana is moving toward stabilization or simply losing transparency as conditions worsen. For Colombia’s energy and resources lens, the September data pointed clearly away from recovery and toward continued emergency management, with thermal unreliability increasing the likelihood of further fuel diversion or spot procurement.

The risk scores reflected that failed stabilization. After dropping to risk 28 / impact 32 on September 16, the profile rebounded to risk 44 / impact 39-36 by September 24, indicating that the temporary easing had not altered the underlying trajectory.

October Confirmed Persistence, Not Recovery

The first week of October established that the crisis was no longer episodic. On October 5, localized utility reports from Havana and Sancti Spíritus recorded new early-morning outages explicitly linked to generation deficits, while the latest official nationwide figure cited remained 1,996 MW of affected load. A second October 5 report sharpened the structural picture: the grid operator had projected a roughly 1,840 MW shortfall on October 4, with about 1,070 MW of available generation against 3,050 MW of demand. More importantly, reporting said that at least 23 of the previous 30 days had recorded more than 2,000 MW of real maximum service impact.

That statistic changed the character of the event. It suggested not a string of bad days, but a sustained capacity gap with almost no recovery margin. By October 9, same-day figures still showed 1,163 MW of informed availability and a 1,206 MW generation deficit, alongside deficit-related outages in Havana and Holguín. Separate monitoring estimated that only about 37% of peak-night demand was being covered.

Local disruption data on October 8-9 reinforced how deeply the shortages were reaching into daily life in the capital:

- 91 distribution circuits were out around midnight in Havana on October 8 - About 235 MW was affected in the capital - Some neighborhoods were facing outages of more than eight hours - Other circuit-level monitoring on October 9 indicated 9-14 hour outages in parts of Havana

The risk and impact readings during this period were uneven but consistently elevated. Scores ranged from risk 34-46 and impact 22-46, reflecting that while the crisis was no longer accelerating every day, it was proving durably severe. For Havana’s domestic-political calculus, this mattered because visible outages in the capital are a legitimacy test in a way that provincial hardship alone is not. The combination of blackouts with telecoms, water, food preservation, and production disruption increases the chance that frustration becomes synchronized urban anger, even without evidence of elite fracture.

The Mid-October Escalation Across Grid, Fuel, And Transport

The crisis broadened materially between October 10 and October 11. On October 10, utility reporting showed the National Electric System with 1,250 MW available against 2,470 MW of demand at 06:00, leaving a 1,222 MW deficit, with a projected peak-time impact of up to 1,680 MW. Local reports showed that rotating outages were slipping beyond schedule: in Velasco 1, Holguín, one cut had lasted 23 hours and 19 minutes by 06:00.

Provincial monitoring the same day showed 68 distribution circuits affected in Havana, with repeated overnight outages and restorations. Another October 10 update added a key plant-status datapoint: the Antonio Guiteras thermal unit remained under repair after another shutdown, underscoring that the deficit still stemmed from repeated thermal-unit failures and that there had been no visible fuel-import or financing breakthrough.

On October 11, the forecast worsened again. Cuba entered the day with 1,235 MW of available generation against expected demand of 2,980 MW, implying a forecast peak deficit of 1,775 MW. Even after the reported overnight return of Antonio Guiteras and other units, reserve margin did not recover; by early morning, Havana still had 50 disrupted circuits affecting 129 MW.

The same period also introduced a new layer of infrastructure fragility. State utility reporting cited by EFE said Cuba suffered another partial grid failure in the east after a 220-kV transmission line trip, with service restored about four hours later. Local reporting identified the line as the Nuevitas, Las Tunas 220-kV connection, whose trip caused a partial disconnection of the national grid and temporarily isolated the eastern region. That was more than another outage statistic: it showed that transmission faults, not just generation deficits, had become immediate destabilizers.

This is where the security-risk dimension sharpened. For Cuba’s internal security apparatus, a regional grid split tests whether service failure remains containable by province or is becoming a command-and-control problem across multiple eastern territories. Repeated transmission faults also raise the odds of synchronized disruption to:

- policing - hospital backup systems - transport operations - communications networks

For Venezuela’s security and domestic-politics lenses, the pattern would likely read as a manageable technical crisis under pressure, but one that can still widen disorder risk if daily hardship persists without visible improvement. Continued long outages in Havana in particular keep legitimacy pressure elevated and could force tighter provincial crowd-management even absent signs of regime fracture.

Knock-On Effects Beyond The Grid

The power crisis is no longer confined to electricity availability. Reporting cited on October 5 by EFE said fuel shortages had led most airlines to suspend service to Cuba, while prolonged blackouts were also disrupting airport operations and forcing improvised travel arrangements. That added a transport and logistics dimension to the crisis, linking fuel scarcity directly to reduced air connectivity and operational disruption at airports.

Separate reporting from October 10-11 quantified the broader societal effects. In 23 of 30 days surveyed, load shedding exceeded 2,000 MW, and the knock-on consequences were no longer abstract: telecoms, water pumping, food preservation, and production were all being disrupted. In Havana, one morning update cited 41 distribution circuits out, with some outages lasting 6-10 hours.

For Ministerio de Energía y Minas (MINEM) and UNE, a 1.9 GW deficit is no longer only a scheduling problem. It is a reserve-collapse problem with almost no margin if another unit trips. That forces increasingly difficult tradeoffs between stricter fuel diversion, deeper load shedding, and ad hoc dispatch changes that can themselves strain the system further. For external observers such as Mexico and Colombia, the absence of a durable recovery and the persistence of thermal unreliability suggest continued pressure for emergency fuel logistics or outside operational support.

The latest data confirm that the crisis remains active rather than residual. On October 24, Cuba’s grid operator opened the day with demand of 2,104 MW at 06:00 and available generation of only 915 MW, leaving 1,177 MW affected nationwide. Then on October 26, the daily electricity report projected a peak-hour deficit of 1,900 MW, up 140 MW from the previous day’s 1,760 MW. CiberCuba reported available generation at 1,030 MW against 2,900 MW of demand, with four generating units out of service.

The scoring trend is notable. Risk and impact peaked at 58 / 61 on October 10, eased unevenly in some updates as specific incidents were restored or localized, then returned to 58 / 52 by October 26. That pattern suggests not a linear escalation but a crisis that has become structurally entrenched: temporary operational improvements reduce immediate stress, but each new plant failure or transmission event quickly restores high-end risk.

Outlook

Cuba’s grid remains in a high-risk equilibrium where even minor unit or transmission failures can produce outsized nationwide effects because reserve margin is effectively absent. The key watchpoints are whether UNE can raise available generation materially above the current ~1.0-1.25 GW range, whether peak deficit forecasts begin to fall consistently below the 1.5 GW threshold, and whether new transmission trips trigger further regional separations. If outages in Havana remain in the double-digit-hour range while fuel shortages continue to disrupt transport, the next phase of the crisis is more likely to be political and public-order stress than purely technical deterioration.