In the heart of Cuba, in towns like Jatibonico where horse-drawn carts still outnumber cars and electricity is a daily gamble, quiet but transformative change is taking place. Not from the longtime ally Russia, but from a new and increasingly dominant partner: China.

For decades, Russia has been one of Cuba’s biggest international supporters—offering oil, food, aid, and promises of rebuilding infrastructure. In recent years, however, that support has faltered. War in Ukraine, economic strain, and an unwillingness to extend further credit have seen many of Moscow’s promises stall or vanish. Projects like the long-promised revival of the Jatibonico sugar mill remain incomplete, a rusting symbol of unfulfilled Russian aid.

Enter China, whose approach has been less flashy but far more effective. Through its Belt and Road Initiative, China has launched a wave of infrastructure projects across the island, focusing on long-term, practical upgrades. These include power grid modernization, port improvements, telecommunications upgrades—and, most notably, solar farms.

Cuba has long suffered from chronic electricity shortages, particularly during daylight hours when demand spikes. China’s response? A plan to install 55 solar parks across the country by the end of this year, each generating 21 megawatts. That’s just the start—an additional 37 parks are planned by 2028. Combined with existing efforts, these solar installations could produce nearly 400 megawatts of electricity, closing much of Cuba’s midday energy gap.

In some regions, these solar farms are already online, easing blackouts and reducing dependence on imported fuel. Local workers describe how Chinese supervisors are deeply involved—monitoring routes, fuel use, and construction quality. “They’re checking every liter of petroleum,” one truck driver noted, pointing to Beijing’s hands-on style of project management.

China’s support isn’t limited to energy. Shipments of steel, solar panels, and building materials are flowing into Cuban ports, accompanied by quiet diplomacy and on-the-ground coordination. Unlike Russia’s often delayed or abandoned initiatives, China’s projects are getting done—and making an impact.

This shift is more than just economic. Strategically, China’s deepening involvement in Cuba gives it a foothold in the Americas. Some security analysts believe China’s infrastructure investments could support future digital surveillance or military communications, reminiscent of Cold War-era dynamics in the region. While no such intentions are confirmed, the geopolitical ripple effects are being closely watched.

Still, Cuba’s challenges remain steep. The country faces renewed U.S. sanctions, a faltering tourism sector, and severe shortages of food, medicine, and basic goods. Even China’s extensive investments may not be enough to reverse the island’s economic slide. But one thing is clear: in the absence of consistent Russian aid, Beijing is stepping in—and delivering.

Where Russia offered promises, China is building infrastructure. Where Moscow hesitated, Beijing has moved swiftly. And while the spotlight stays off for now, China is quietly becoming the most important foreign player in Cuba’s future—one solar panel, one shipment, one project at a time.