Energy in Puerto Rico

Puerto Rico's energy system is unlike that of any U.S. state. As an island without domestic fossil fuel resources, Puerto Rico relies heavily on imported fuels to generate electricity while steadily expanding renewable energy sources such as solar power. The island's electrical grid has faced significant challenges in recent years, particularly following Hurricane Maria in 2017, leading to major investments in grid modernization, renewable energy, and energy resilience.

Today, Puerto Rico continues to transform its energy infrastructure with the goal of creating a cleaner, more reliable, and more sustainable electrical system for residents, businesses, and visitors.

Energy at a Glance

Primary energy source	Imported natural gas and petroleum
Electric utility	LUMA Energy (transmission & distribution) / Genera PR (generation)
Renewable goal	100% renewable energy by 2050
Largest renewable source	Solar energy
Main challenge	Grid reliability and hurricane resilience
Known for	Rapid growth of rooftop solar and battery storage

How Puerto Rico Generates Electricity

Puerto Rico generates electricity from a combination of imported fossil fuels and renewable energy sources. Because the island has no significant domestic reserves of oil, natural gas, or coal, most of the fuel used to produce electricity must be imported. In recent years, Puerto Rico has worked to diversify its energy mix by expanding renewable sources such as solar power while reducing its dependence on petroleum.

Natural Gas

Natural gas has become one of Puerto Rico's primary sources of electricity generation. Compared with oil, natural gas burns more efficiently and produces fewer greenhouse gas emissions, making it an important transition fuel as the island moves toward cleaner energy sources.

Petroleum

For decades, petroleum was the dominant fuel used to generate electricity in Puerto Rico. Although its role has declined, oil-fired power plants continue to provide a significant portion of the island's electricity, particularly during periods of high demand.

Coal

Coal once contributed to Puerto Rico's energy supply through a single large generating facility on the southern coast. The island is gradually phasing out coal generation as part of its long-term transition toward cleaner and more sustainable energy sources.

Solar Energy

Solar power is the fastest-growing source of renewable energy in Puerto Rico. Thousands of homes and businesses have installed rooftop solar systems, often paired with battery storage to provide backup power during outages. Utility-scale solar farms are also expanding across the island.

Hydroelectric Power

Puerto Rico has produced hydroelectric power for more than a century using reservoirs located primarily in the island's central mountains. While hydroelectricity represents only a small portion of total electricity generation today, it remains an important renewable energy source.

Wind Energy

Several wind farms contribute renewable electricity to Puerto Rico's power grid, particularly along the southern coast where wind conditions are favorable. Although wind currently supplies only a modest share of electricity, it remains an important part of the island's renewable energy strategy.

Renewable Energy

Renewable energy is playing an increasingly important role in Puerto Rico's energy future. Following Hurricane Maria, many homeowners, businesses, schools, and hospitals invested in rooftop solar panels and battery storage systems to improve energy independence and reduce the impact of future outages. These distributed energy systems have become one of the fastest-growing segments of Puerto Rico's electric grid.

In addition to rooftop solar, the island continues to expand utility-scale solar farms, battery storage projects, and microgrids that allow communities and critical facilities to operate independently during emergencies. Wind farms and existing hydroelectric facilities also contribute renewable electricity, while new technologies continue to improve energy reliability.

Puerto Rico has established ambitious renewable energy goals, with plans to significantly increase the percentage of electricity generated from renewable sources over the coming decades. Continued investment in modern infrastructure, energy storage, and distributed generation is expected to play a central role in achieving a cleaner, more resilient electric system.

The Electrical Grid

Puerto Rico's electrical system consists of three primary organizations that together generate, transmit, distribute, and maintain electricity across the island.

Puerto Rico Electric Power Authority (PREPA)

The Puerto Rico Electric Power Authority (PREPA) owns most of the island's electric generation facilities, transmission lines, substations, and other electrical infrastructure. Established in 1941, PREPA has historically served as Puerto Rico's public electric utility and continues to own much of the power system.

LUMA Energy

LUMA Energy is responsible for operating and maintaining Puerto Rico's transmission and distribution system. Its responsibilities include restoring service after outages, maintaining power lines and substations, connecting new customers, and modernizing the electrical grid to improve reliability and resilience.

Genera PR

Genera PR manages the operation and maintenance of PREPA's thermal power plants. Its role focuses on improving the reliability and efficiency of electricity generation while supporting Puerto Rico's ongoing transition toward a more diversified energy portfolio.

Together, these organizations form Puerto Rico's modern electric system, with each playing a distinct role in delivering electricity from power plants to homes, businesses, and public facilities throughout the island.

Major Power Plants

Costa Sur Power Plant

Located in Guayanilla, Costa Sur is one of Puerto Rico's largest generating facilities and primarily uses natural gas and petroleum to produce electricity for the southern and western regions of the island.

Aguirre Power Complex

Situated in Salinas, the Aguirre complex has long been one of Puerto Rico's principal power generation facilities. It plays a significant role in supplying electricity to the southern and eastern portions of the island.

San Juan Power Plant

The San Juan Power Station serves the metropolitan area and has undergone modernization efforts that include increased use of natural gas to improve efficiency and reduce emissions.

Palo Seco Power Plant

Located in Toa Baja, Palo Seco is another major generating facility serving northern Puerto Rico and the San Juan metropolitan region.

EcoEléctrica

Located in Peñuelas, EcoEléctrica is one of the Caribbean's first liquefied natural gas (LNG) power plants and supplies a significant portion of Puerto Rico's electricity using imported natural gas.

Challenges Facing Puerto Rico's Energy System

Puerto Rico's electric system faces unique challenges as an island that depends heavily on imported fuels and infrastructure exposed to tropical weather. Hurricanes, earthquakes, and severe storms have repeatedly demonstrated the importance of building a more resilient electrical grid capable of withstanding natural disasters.

Much of Puerto Rico's transmission and distribution infrastructure was originally built decades ago and requires ongoing modernization. Maintaining power lines across mountainous terrain while serving remote communities presents additional engineering and operational challenges.

Because nearly all fossil fuels must be imported, electricity costs are influenced by global energy prices and transportation expenses. These factors, combined with the need to repair and modernize aging infrastructure, contribute to electricity prices that are often higher than those found in many parts of the mainland United States.

At the same time, Puerto Rico is investing heavily in renewable energy, battery storage, and distributed generation to reduce dependence on imported fuels and improve reliability. Expanding rooftop solar, strengthening transmission systems, and developing community microgrids are expected to play a key role in creating a cleaner, more resilient, and more sustainable energy future

Why Is Electricity So Expensive in Puerto Rico?

Electricity costs in Puerto Rico are generally higher than in many parts of the mainland United States due to a combination of geographic, economic, and infrastructure factors. Unlike states that can access domestic fuel supplies through pipelines, Puerto Rico is an island that relies heavily on imported natural gas and petroleum to generate electricity. The cost of purchasing, transporting, and storing these fuels directly affects the price consumers pay for electricity.

Maintaining an island-wide electrical grid also presents unique challenges. Puerto Rico's mountainous terrain, coastal climate, and exposure to hurricanes require extensive transmission infrastructure that is expensive to repair and maintain. Hurricanes Irma, Maria, Fiona, and other severe storms have caused billions of dollars in damage, leading to ongoing investments in rebuilding and modernizing the electrical system.

Another factor is the transition toward cleaner and more reliable energy sources. Puerto Rico is investing in renewable energy, battery storage, grid modernization, and new transmission infrastructure to reduce its dependence on imported fuels and improve long-term reliability. While these projects require significant investment today, they are expected to strengthen the electric system and help stabilize energy costs over time.

Although electricity prices remain higher than many residents would like, Puerto Rico's growing adoption of rooftop solar panels, battery storage systems, utility-scale renewable energy projects, and modern grid technologies offers promising opportunities for a cleaner, more resilient, and more sustainable energy future.

Why Puerto Rico's Energy Story Is So Important

Growing up in Puerto Rico, electricity was something I rarely thought about until a storm passed through. Hurricane Maria changed that perspective forever, reminding everyone on the island just how essential a reliable power system is. Today, seeing homes, businesses, and entire communities embrace rooftop solar, battery storage, and new technologies gives me hope that Puerto Rico's energy future can become stronger and more resilient than ever before.