For years, we’ve been told that building clean energy takes time.

A lot of time.

Utilities say new transmission lines can take a decade. Hydrogen projects require years of planning, permitting, environmental reviews, financing, and construction. New gas plants routinely take years to approve and build. Carbon capture projects remain perpetually just around the corner.

Then there is Cuba.

The island nation has been struggling through one of the worst energy crises in its modern history. Aging oil-fired power plants frequently break down. Fuel shortages have become common. Blackouts have stretched for hours, sometimes affecting large portions of the country. Economic pressures, supply constraints, and geopolitical tensions have made it increasingly difficult to maintain the fossil fuel-dependent system that powered Cuba for decades.

Faced with a crisis, Cuba could have doubled down on oil.

Instead, it chose solar.

And it is moving surprisingly fast.

With support from China, Cuba has launched one of the most ambitious solar expansion efforts in the Caribbean. New solar parks have been appearing across the island at a pace that would surprise many Americans who have grown accustomed to hearing that clean energy projects take years to develop.

The numbers are striking.

Reuters reported that Cuba planned to install more than 50 solar parks in 2025, supported by China, with the projects expected to produce more than 1,000 megawatts. The broader plan includes 92 solar parks as part of an effort to increase renewable energy to 24 percent of total electricity generation by 2030.

This is not primarily a rooftop solar revolution. It is mostly a rapid buildout of utility-scale solar parks. That distinction matters. Rooftop solar, batteries, community solar, and virtual power plants remain essential tools for energy democracy. But Cuba’s experience still challenges one of the fossil fuel industry’s favorite excuses: that clean energy cannot move quickly enough to respond to a crisis.

It can.

Solar projects do not require fuel pipelines.

They do not require constant deliveries of imported oil.

They do not depend on volatile global fuel markets.

Once panels arrive, they can often be installed in a matter of months.

Compare that with many of the projects currently being promoted across the United States.

Hydrogen hubs are expected to cost billions of dollars and may take a decade or more to fully develop. Carbon capture projects frequently struggle with cost overruns and technical challenges. New gas plants face permitting battles, construction delays, and growing questions about their long-term economic viability.

Meanwhile, solar continues to get cheaper, faster, and more widely available.

None of this means Cuba’s energy problems are solved.

Far from it.

Solar panels alone cannot fix decades of underinvestment in electrical infrastructure. The country still faces significant challenges with transmission systems, energy storage, maintenance, financing, and affordability. Blackouts remain a reality for many residents.

But that is precisely what makes the story so important.

Even under difficult economic conditions, Cuba is demonstrating that renewable energy can be deployed rapidly when leaders treat it as a priority.

The lesson extends far beyond the Caribbean.

Around the world, governments continue to spend enormous amounts of time and money pursuing energy mega-projects. These projects are often marketed as essential for reliability, economic development, or climate goals. Yet many take years to deliver benefits, if they ever deliver them at all.

Communities are increasingly being asked to accept new fossil fuel infrastructure, hydrogen facilities, carbon capture networks, and other large-scale industrial projects based on promises of future benefits.

What if there is a faster path?

What if the most effective response to an energy crisis is not another massive fossil fuel project, but clean energy deployed as quickly as possible?

California offers an important comparison.

The state continues to debate expensive transmission projects, controversial hydrogen proposals, and utility investments that may not be completed for years. At the same time, rooftop solar, battery storage, community solar, and virtual power plants can often be deployed much more quickly and closer to the people who need power.

The question is not whether large infrastructure projects have a role.

The question is why they so often dominate the conversation while faster, cleaner, more community-centered alternatives are treated as secondary options.

Cuba’s solar buildout does not provide all the answers.

It does, however, offer a powerful reminder.

When people need electricity, timelines matter.

When communities are facing blackouts, promises about what might happen ten years from now provide little comfort.

And when governments are forced to choose between waiting for the perfect solution and deploying the available one, solar is increasingly proving that it can move at a speed few other energy technologies can match.

In a world that constantly claims the clean energy transition is moving too slowly, one of the most remarkable solar buildouts on the planet is happening in a place that many people are barely paying attention to.

Perhaps they should.