Cuba’s energy crisis has reached a critical inflection point. Rolling blackouts, now a daily reality for millions, have forced a fundamental rethink of the island’s power infrastructure. For residents of Havana’s high-rise buildings, the effect is particularly acute: elevators stall, water pumps fail, and the constant hum of backup generators fills the air. This is not merely an inconvenience — it is a systemic collapse that demands immediate intervention.
The crisis stems from a confluence of factors: ageing Soviet-era power plants, fuel shortages exacerbated by US sanctions, and a lack of investment in renewable alternatives. The Cuban government has implemented load-shedding schedules, but these are often unpredictable, leaving families without power for up to 12 hours at a time. “We never know when the lights will go out,” said one resident of a 20-storey block in Vedado. “It could be during a meal, or at midnight when we rely on the lift for medical emergencies.”
The situation is a stark reminder that energy poverty is not solely an issue of generation capacity—it is also one of distribution and resilience. High-rise living, once a symbol of modernity, has become a liability. Without reliable power, basic services such as water and sanitation become compromised. Hospitals and schools operate on skeleton resources. The psychological toll is palpable: anxiety, disrupted sleep, and a pervasive sense of helplessness.
Enter the United Kingdom. In a move that underscores the growing role of international cooperation in energy transitions, the UK has offered technical expertise to help stabilise Cuba’s grid. The British Embassy in Havana confirmed that a team of engineers from the UK’s Energy Systems Catapult will assess the feasibility of integrating solar microgrids and battery storage into the existing infrastructure. The plan is not to impose a foreign solution, but to work alongside Cuban engineers to identify where resilience can be built.
This is not charity; it is a data-driven response to a shared challenge. The UK has faced its own energy vulnerabilities, particularly after Russia’s invasion of Ukraine exposed over-reliance on fossil fuels. By sharing lessons in decentralisation and grid modernisation, Britain hopes to demonstrate that transitions to low-carbon energy can also be transitions to security. For Cuba, the immediate benefit would be reduced blackout frequency for critical facilities: hospitals, water treatment plants, and high-rise residential blocks.
But the deeper analogy here is one of ecosystems. An electrical grid, like a biological network, is only as robust as its weakest node. In Cuba, the nodes are the old plants and the dependence on imported diesel. Introducing solar-plus-storage is akin to introducing keystone species that stabilise the entire system. The UK’s offer, if implemented, could create a proof of concept for other island nations facing similar fragility.
There are, of course, challenges. Sanctions complicate procurement of equipment. Political distrust lingers, though both sides have signalled willingness to cooperate. And the sheer scale of need — Cuba requires an estimated 2 gigawatts of new capacity — means this intervention is a drop in the ocean. Yet the psychological impact of even a small win should not be underestimated. For residents in those high-rises, every hour of guaranteed power is an hour of restored certainty.
The physics are clear: energy is the foundation of modern civilisation. When it fails, everything else falters. The UK’s offer recognises that in a connected world, one country’s blackout is everyone’s vulnerability. Whether this particular collaboration succeeds remains to be seen, but the principle is sound: we cannot solve a systemic crisis with piecemeal efforts. We need to rewire the system itself.
