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Cuba Dispatch
28MAY

Refinery restart cuts grid deficit to 1,395 MW

4 min read
08:42UTC

Camilo Cienfuegos came back online on Friday 17 April after roughly four months down, processing the Anatoly Kolodkin crude into 337-367 MW of restored evening capacity by 26 April.

PoliticsDeveloping
Key takeaway

The 337-367 MW grid improvement was bought by Russian crude the administration's sanctions architecture nominally forbids.

UNE, Cuba's state grid operator (Unión Eléctrica Nacional), forecast a peak deficit of 1,365 to 1,395 MW for Sunday 26 April 2026 against demand of 3,100 MW. The shortfall sits 337 to 367 MW below the 1,732 MW deficit recorded on 15 April . The Camilo Cienfuegos refinery in Cienfuegos province restarted on Friday 17 April after roughly four months offline, routing the Anatoly Kolodkin crude delivered on 31 March into the grid. Energy Minister Vicente de la O Levy said publicly that "with just this ship, we only have fuel until the end of April".

The arithmetic of Cuban resupply has tightened to a single dependency. The thermal fleet needs roughly eight fuel cargoes a month at design tempo; between December 2025 and April 2026 it received one, meeting roughly 13 per cent of stated need. The PDVSA Cuba carve-out from 18 March walled off Venezuelan crude from the state oil entity, leaving Russian Sovcomflot deliveries as the island's last active supply line. The next cargo is the Universal, the Sovcomflot tanker expected at Matanzas on Wednesday 29 April under the cover of OFAC General Licence 134B.

Without that wind-down licence, every port operator, insurer and payment intermediary handling the Universal would face secondary-tariff exposure under EO 14380 . Treasury chose the operational track instead, narrowing its own architecture to keep the supply chain legal in May.

Camilo Cienfuegos was down for four months because Cuba had no crude to refine; its return depends on the Universal arriving on time and discharging. Renewable photovoltaic at 641 MW peak midday is now visible in UNE bulletins but cannot fill the evening hole that drove the 26 April deficit. De la O Levy's end-of-April fuel exhaustion signal makes the Universal a politically dated event with measurable consequences if it slips.

Deep Analysis

In plain English

Cuba has an oil refinery in the province of Cienfuegos that turns crude oil into the heavy fuel oil that runs the power stations. That refinery had been shut down for about four months, which is one reason the blackouts had been so severe. On 17 April it restarted, using oil delivered by a Russian tanker at the end of March. The restart cut the amount of power the grid was short by about 20 per cent, which is why Havana got four days without blackouts. But Cuba's Energy Minister said the fuel from that delivery only lasts until the end of April. The next Russian tanker, the Universal, needs to arrive and unload around 29 April for the power to stay on.

Deep Analysis
Root Causes

Cuba's thermal generating fleet runs on residual fuel oil, a heavy refinery product that the Camilo Cienfuegos plant produces from crude feedstock. The island has no significant domestic crude reserves and no alternative thermal feedstock.

When the refinery is offline, the grid runs on whatever residual oil stockpiles remain from prior deliveries; those stockpiles exhausted in roughly 12 days after the previous Kolodkin cargo was processed. The grid deficit then becomes a direct function of the refinery restart date.

The four-month offline period reflects the structural condition that Cuba's Soviet-era refineries require periodic catalytic reformer regenerations and heat-exchanger cleaning cycles that need specialist equipment and chemicals unavailable under the sanctions environment.

What could happen next?
  • Risk

    The Camilo Cienfuegos refinery's sustained operation is wholly contingent on monthly Sovcomflot deliveries. A single delayed cargo, whether through US enforcement or logistics failure, shuts the refinery and restores the pre-17 April deficit within roughly 12 days.

    Short term · 0.85
  • Consequence

    Cuba's grid improvement is entirely attributable to the Russian crude route that EO 14380 nominally prohibits, making any genuine enforcement of EO 14380's secondary tariffs against Sovcomflot directly measurable in UNE deficit figures.

    Short term · 0.9
  • Risk

    The refinery's four-month maintenance backlog is not resolved by a single restart; structural catalyst and heat-exchanger deficits from the sanctions environment mean the plant operates below design efficiency and faces a higher unplanned-outage probability than normal.

    Medium term · 0.7
First Reported In

Update #2 · Two Cuba policies, one fortnight

Unión Eléctrica Nacional· 27 Apr 2026
Read original
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