The protracted energy crisis in Cuba has reached a critical juncture, with residents of high-rise buildings enduring constant unpredictability as the grid continues to falter. According to reports from Havana, blackouts now stretch for up to 16 hours per day, leaving families in upper floors trapped without elevator access, running water, or reliable refrigeration. The situation is a direct consequence of aging infrastructure, fuel shortages, and the cumulative impact of decades of economic isolation.
Cuba’s electrical grid, already brittle from underinvestment, has been further destabilised by the cessation of Venezuelan oil shipments and the tightening of US sanctions. Power stations, many of which date back to the Soviet era, operate at a fraction of their capacity. The result is a spiralling crisis: outages force residents to rely on noisy, inefficient diesel generators, which in turn drain fuel reserves and worsen air quality in dense urban zones.
The UK government has offered technical expertise in grid modernisation and renewable energy integration. British companies specialising in solar microgrids and energy storage have signalled interest in pilot projects. Yet such offers face political obstacles: the US embargo complicates financial transactions and technology transfers. Moreover, Cuba’s centralised economic model struggles to accommodate the decentralised nature of modern renewables.
The physical reality is stark. For those living above the 10th floor, a blackout means no water, because electric pumps fail. The elderly, the disabled, and families with young children are especially vulnerable. The psychological toll is measurable: chronic uncertainty elevates stress hormones, disrupts sleep, and erodes social trust. This is not merely an infrastructural problem but a public health crisis.
From a climate perspective, Cuba’s predicament is a cautionary tale. The island nation has invested heavily in climate adaptation given its exposure to hurricanes and sea-level rise. But adaptation cannot succeed without a stable energy base. Solar panels alone cannot power dialysis machines when the grid goes down; batteries are required. And batteries require lithium, which Cuba lacks and cannot easily import.
The UK’s offer of expertise is welcome, but it must be partnered with de-risking mechanisms that allow private capital to flow. The alternative is a continued downward spiral where blackouts breed desperation, which in turn fuels emigration. For the residents of Havana’s high-rises, the wait for light is measured not in hours but in the slow realignment of geopolitics.
