Cuba’s power is coming back, but it is not sticking. Despite power returning, blackouts are still a regular occurrence, hammering nearly ten million residents and the wider economy in the process. The underlying problem is not a one-off technical glitch. It is a fuel supply equation that keeps resetting.

At the center of the most recent squeeze is a simple fact with big operational consequences: Cuba only produces 40% of the fuel it needs. With that built-in deficit, the grid is dependent on shipments and deliveries that can be delayed or constrained, and the latest episode shows how fast that risk can turn into rolling outages. France 24 reports that a Russian delivery of 730,000 barrels of oil arriving in late March ran out at the end of April.

For decision-makers, this is the kind of story that looks like “infrastructure” until it behaves like “finance.” When a country or a power system relies on imported fuel to cover roughly 60% of demand, every shipping timeline becomes a budget timeline. If fuel arrives later than needed, or if the run rate of consumption is higher than expected, you do not just miss a checkpoint. You end up with blackouts that recur on a schedule driven by logistics rather than electricity planning.

The source also points to why those logistics are so brittle. Cuba has struggled to receive shipments due to US restrictions. That means the problem is not simply “finding a supplier.” It is the broader regulatory environment around where fuel can move, who can move it, and what paperwork and banking pathways are permitted. In practice, US restrictions can tighten the effective supply chain even when there is willingness to sell. The result is a recurring mismatch between what the grid needs and what arrives in time.

That context matters because blackouts are not only a humanitarian and social issue, they are an economic one. When power reliability collapses, everything from refrigeration to industrial activity gets disrupted. For nearly ten million residents, outages also amplify secondary stress: households lose access to services that presume stable electricity. For the wider economy, outages can slow production, deter investment, and raise operating costs for businesses forced to run backups. None of that requires an argument. The linkage between electricity stability and economic activity is direct.

The oil detail, the 730,000 barrels that ran out by the end of April, is especially instructive for executives managing supply risk. It shows how quickly “we got it” becomes “we are back to scarcity” when imports are both limited and time-constrained. If the imported barrel supply runs out in about a month, then planning horizons tighten. Operators need buffer stocks, but buffer stocks require working capital, storage capacity, and consistent logistics. Under regulatory pressure, each of those becomes harder to execute.

For peers in similar roles, the strategic stake is clear: when power systems are fuel-constrained and regulatory-constrained, reliability cannot be treated as a purely technical target. It becomes a governance and risk-management problem. Boards and senior leadership teams overseeing critical infrastructure should look at the full system: fuel availability, delivery timing, storage and drawdown assumptions, and the policy constraints that shape what suppliers can realistically deliver. Cuba’s current cycle, as described by France 24, is a warning that “power returning” is not the same thing as operational resilience when the fuel equation can flip back to deficit.

In other words, the blackouts are not random. They are the visible output of a durable constraint: a system producing 40% of its needed fuel, dependent on imports that can be delayed or restricted, and a recent shipment that was gone by the end of April. Until that structural mismatch is fixed, the question for operators becomes not whether outages happen, but how fast the next ones arrive.