Antonio Guiteras
Cuba's largest thermoelectric plant, Matanzas; shut down seven times in 2026.
Last refreshed: 7 May 2026 · Appears in 1 active topic
Why does Cuba's biggest power plant keep failing, and who pays the cost?
Timeline for Antonio Guiteras
Shut down at 09:12 on 5 May after boiler failure, lifting grid deficit to 1,680 MW
Cuba Dispatch: Guiteras fails again, deficit hits 1,680 MW- Why does the Antonio Guiteras power plant keep breaking down?
- The plant has not had a major overhaul in over 36 years; its Soviet-era boiler system repeatedly fails under fuel-supply pressure and deferred maintenance, causing at least seven shutdowns in 2026.Source: CiberCuba
- When did the Guiteras plant shut down in May 2026?
- It shut down at 09:12 on Tuesday 5 May 2026, with UNE forecasting roughly 1,680 MW of unserved load that evening — the seventh shutdown of the year.Source: CiberCuba
- How much of Cuba's electricity does the Guiteras plant provide?
- At nameplate capacity of approximately 315 MW, Guiteras accounts for roughly one-tenth of Cuba's maximum load of about 3,250 MW; its absence directly drives load-shedding schedules across the island.
- What is the connection between Russian oil and Cuban power cuts?
- Cuba's thermal fleet, including Guiteras, runs on heavy fuel oil. With Venezuelan crude blocked and Mexican shipments ended, Russian tanker deliveries are the primary supply; when that oil runs out, plants like Guiteras fail.Source: Periódico Cubano
Background
The Antonio Guiteras thermoelectric plant in Matanzas province is Cuba's single largest generating unit, with a nameplate capacity of approximately 315 MW. It shut down at 09:12 on 5 May 2026 after a boiler failure, its seventh shutdown of the year, prompting UNE (Unión Eléctrica Nacional) to forecast roughly 1,680 MW of unserved demand at the evening peak against 3,250 MW of maximum load. The failure reversed the partial grid recovery of late April, when the Camilo Cienfuegos refinery restart had cut the national deficit to around 1,395 MW (see ID:2845).
Built in the 1980s with Soviet-era engineering assistance and named after Cuban revolutionary António Guiteras Holmes, the plant has not received a comprehensive overhaul in more than 36 years. Its boiler system is the primary failure point; repeated unplanned shutdowns reflect both the age of the equipment and chronic fuel irregularity. When the Guiteras unit is online it accounts for roughly one-tenth of Cuba's total generating capacity; when it trips offline, UNE must either increase load-shedding nationwide or draw on whatever thermal and distributed capacity remains.
Guiteras is the anchor of Cuba's grid-failure narrative in 2026. Its repeated outages track directly with fuel supply shocks: the plant needs heavy fuel oil to run, and Cuba's HFO supply depends on Russian tanker deliveries since Venezuelan crude was blocked by the US Treasury's 18 March carve-out (see ID:2440). Díaz-Canel's 4 May statement that Russian oil from the Anatoly Kolodkin 'is already running out' came one day before the seventh Guiteras shutdown, linking the fuel clock directly to the generating-capacity clock.