Cuba’s seventh major 2026 blackout hit the national grid
Cuba’s national electricity system collapsed after transmission-line failures and unstable weather, according to state utility UNE. Power restoration was gradual, while fuel shortages and aging plants continued to constrain generation.
By DoomRadar · Published on DoomRadar . Updated .
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How the effects could reach youConditional effects
Event date: The nationwide blackout occurred on September 18, 2026, with restoration efforts reported the following day. [3][1]
What happened
Cuba’s Ministry of Energy and Mines announced an islandwide outage on Friday, September 18, and said officials had activated service-restoration protocols. The blackout was described as at least the sixth grid collapse of the year by AP reporting and the seventh major outage by other accounts. [3][1]
References for this detail (2)
- Cuba works to restore power after another blackoutjamaicaobserver.com · Article published: Sep 19, 2026, 9:20 PM UTC
- Cuba's power grid collapses again. Millions without electricity for at least 6th time this year – Ya Libnanyalibnan.com · Recorded source date: Sep 20, 2026, 12:16 PM UTC
State utility UNE attributed the collapse to a failure in transmission lines combined with unstable weather conditions. The outage initially affected five provinces, including Havana, before spreading to the rest of the country. [1][2]
References for this detail (2)
- Cuba works to restore power after another blackoutjamaicaobserver.com · Article published: Sep 19, 2026, 9:20 PM UTC
- Cuba, nuovo blackout nazionale: crisi energetica sempre più grave, stop alla corrente fino a 60 oreaffaritaliani.it · Article published: Sep 19, 2026, 8:11 AM UTC
Electricity returned gradually rather than all at once. Reporting from Havana said power availability remained highly uneven, with only about 5% of residents having electricity at one point during the blackout. [2]
References for this detail (1)
- Cuba, nuovo blackout nazionale: crisi energetica sempre più grave, stop alla corrente fino a 60 oreaffaritaliani.it · Article published: Sep 19, 2026, 8:11 AM UTC
The outage was the twelfth nationwide blackout reported since late 2024, according to AFP and Italian reporting. Recent interruptions in Havana reportedly lasted more than 30 hours, while some provinces experienced outages exceeding 60 hours. [1][2]
References for this detail (2)
- Cuba works to restore power after another blackoutjamaicaobserver.com · Article published: Sep 19, 2026, 9:20 PM UTC
- Cuba, nuovo blackout nazionale: crisi energetica sempre più grave, stop alla corrente fino a 60 oreaffaritaliani.it · Article published: Sep 19, 2026, 8:11 AM UTC
The disruption affected basic household services. Residents described simultaneous shortages of electricity, water and cooking gas, while backup generators were also constrained because they generally depend on imported diesel. [1][3]
References for this detail (2)
- Cuba works to restore power after another blackoutjamaicaobserver.com · Article published: Sep 19, 2026, 9:20 PM UTC
- Cuba's power grid collapses again. Millions without electricity for at least 6th time this year – Ya Libnanyalibnan.com · Recorded source date: Sep 20, 2026, 12:16 PM UTC
Context from the sources
Reporting linked the recurring outages to a severe economic crisis, fuel shortages and obsolete thermoelectric plants. A separate account said restrictions on fuel imports also limited access to replacement parts for aging infrastructure. [2][3]
Explore the sources and reporting timeline
3 source links · 3 domains
These counts describe the references, not independent confirmations. Different outlets can repeat the same original report.
Source timeline
Oldest to newest among the available source dates, not a chronology of the incident. Article publication dates come from the source; other recorded dates may reflect when a link was found.
- [2] Cuba, nuovo blackout nazionale: crisi energetica sempre più grave, stop alla corrente fino a 60 oreaffaritaliani.itReferenced for: detail 2, detail 3, detail 4
- [1] Cuba works to restore power after another blackoutjamaicaobserver.comReferenced for: detail 1, detail 2, detail 4, detail 5
- [3] Cuba's power grid collapses again. Millions without electricity for at least 6th time this year – Ya Libnanyalibnan.comReferenced for: detail 1, detail 5
Questions answered by the reporting
What this could mean for you
Longer or repeated power cuts could affect household electricity, water systems and businesses.
Transmission failures can spread across a generation-constrained grid, while limited fuel restricts both power plants and backup generators.
Reported basis: [1][2][3] · The possible effect is interpretation.
Depends on: Further equipment failures, unstable weather or insufficient fuel.
Possible time frame: weeks, if those conditions hold.
Possible consequences, not a forecast. Their relevance depends on your location and the conditions above.
For your country
Choose a country to check how this event could affect you.
What changes the outlook
Risk increases if…
Another transmission-line failure or unstable weather event could trigger a wider outage.
Continued fuel shortages could limit both grid generation and backup power.
Pressure eases if…
Successful repairs to transmission infrastructure could reduce the chance of another system-wide collapse.
Improved fuel availability could support power plants and emergency generators.
Still unclear
The final restoration time for every province was not established.
The total number of people affected and any damage caused by the grid failure were not reported.
Market implications
Market impact
Sources (3)
References for the reported details. Separate links do not necessarily mean independent confirmation.
Available excerpt
HAVANA, Cuba (AFP) — Cuba worked Saturday to restore power after its seventh major blackout of the year, as the communist-run island grappled with woes…A short excerpt from our source record; open the original for the full article.
Available excerpt
È il settimo grande blackout dall’inizio dell’anno e il dodicesimo dalla fine del 2024. Carenza di carburante e impianti obsoleti aggravano l’emergenza energetica Cuba di…A short excerpt from our source record; open the original for the full article.
Available excerpt
An elderly woman sits in the doorway of her home during a blackout in Havana, Cuba, Friday, Sept. 18, 2026. Ramon Espinosa/AP Cuba’s power grid…A short excerpt from our source record; open the original for the full article.
First tracked by DoomRadar: . AI-assisted analysis · . Based on linked headlines and available excerpts. Methodology · Report an error.