Cuba has run out of diesel. The island nation, dependent on imports for virtually all of its energy needs, has seen its fuel reserves dwindle to zero. Power outages, already a daily reality, now extend for hours across Havana and the provinces. Hospitals run on backup generators that may soon fail. The Cuban government has declared an energy emergency.
This is not a temporary disruption. It is a structural collapse. Cuba's energy infrastructure, built around Soviet-era diesel generators and reliant on subsidised Venezuelan oil, has been fraying for years. The end of Venezuelan supply, coupled with US sanctions tightening under the Trump administration, has left the country with no source of diesel. No storage. No buffer.
The immediate cause is a single vessel: a tanker carrying diesel from Russia that was due to arrive in early December. It never came. Cuba's main oil terminal at Matanzas has been empty since November. The country's sole refinery, the 65,000 barrel-per-day Hermanos Diaz plant, has been operating at less than 20% capacity for months. Without diesel, the pumps stop. Without pumps, the trucks stop. Without trucks, the food stops.
This is where British energy firms enter the frame. The UK's Foreign Office has quietly signalled that it sees an opportunity. Not in Cuba alone, but in a wider Latin American vacuum left by retreating US and Chinese interests. The region's energy matrix is shifting. Mexico's oil production is declining. Venezuela's output is a fraction of what it was. Brazil's pre-salt fields are plateauing. The Caribbean and Central America are energy islands, stranded without local generation.
The logic is simple: small modular reactors, solar farms with battery storage, and microgrids. British firms like Rolls-Royce, which is developing small nuclear reactors, and BP's renewables division, have the technology. Cuba has the need. But the barriers are enormous. US sanctions remain the primary obstacle. Any company doing business with Cuba risks losing access to the US financial system. The UK government is exploring legal waivers, but nothing is concrete.
Yet the urgency is real. Cuba's energy collapse is not an isolated event. It is a preview of what happens when a nation loses its lifeline to fossil fuels without a transition in place. The island has abundant solar, wind, and even geothermal potential. Geologists have identified hot rock formations beneath eastern Cuba that could generate 200 megawatts of baseload power. But the capital and technical expertise are absent.
British firms have a comparative advantage in geological surveying and small-scale nuclear. Rolls-Royce's SMRs, each generating 470 megawatts, could power the entire island. The harsh reality is that Cuba cannot afford them. The cost is $2 billion per unit, and the country's GDP is $100 billion. It would require a financing model akin to the UK's Export Credits Guarantee Department, betting on future stability.
There are ethical considerations. Some argue that British intervention in Cuba's energy sector is a new form of colonialism, extracting resources in a time of weakness. Others point out that Cuba's crisis is man-made, a result of 60 years of US embargo and mismanagement. Offering help now is a chance to break that cycle.
Physically, the situation is straightforward. Without diesel, Cuba's population of 11 million faces a humanitarian catastrophe. Food spoils. Water pumps fail. Medical equipment halts. The mortality rate will rise. The UK has the engineering knowledge to mitigate this. The question is not whether to act, but at what pace.
The clock is ticking. Every day of darkness pushes Cuba closer to a breaking point. British energy firms are being urged to step in. Whether they will is a matter of political will, financial risk, and the cold calculus of diplomacy. But the physical reality is undeniable: Cuba needs energy, and the UK has it.
