Wiktor Wise
Puerto Rico has been struggling with its electricity infrastructure for years, with natural disasters, poor maintenance, and underinvestment causing frequent power outages and blackouts. The island's power sector relies heavily on fossil fuel-fired power plants, with petroleum products accounting for three-fifths of its total energy consumption. However, natural disasters such as hurricanes and earthquakes have repeatedly damaged Puerto Rico's electricity infrastructure, leaving many residents without power for extended periods. The territory has also faced challenges with its electrical grid, including equipment failures and an aging system, resulting in a need for significant repairs and upgrades. In recent years, there has been a growing movement towards renewable energy sources, such as solar power, and federal funding has been allocated to improve the resilience of the electrical grid. However, the success of these efforts remains to be seen, and Puerto Rico continues to face challenges in ensuring stable and reliable access to electricity for its residents.
| Characteristics | Values |
|---|---|
| Percentage of electricity generated by petroleum-fired power plants | 62% |
| Percentage of electricity generated by natural gas | 24% |
| Percentage of electricity generated by coal | 8% |
| Percentage of electricity generated by renewables | 7% |
| Percentage of Puerto Rico residents living below the poverty line | 43% |
| Percentage of income spent on electricity | 8% |
| Percentage of Puerto Rico's total residential electricity consumption that solar power produces | 12.5% |
| Percentage of customers with power restored six weeks after Hurricane Maria | 30% |
| Percentage of customers with power restored two months after Hurricane Maria | 50% |
| Percentage of customers with power restored after the April 2018 blackout | 97% |
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What You'll Learn
Hurricanes causing power outages
Puerto Rico has experienced several hurricanes that have caused significant power outages across the island. The island's electric power sector has suffered from underinvestment, poor financial oversight, and natural disasters, leaving it vulnerable to hurricanes and storms.
In September 2017, Hurricane Irma caused power outages for 1 million residents. Just two weeks later, Hurricane Maria struck, resulting in a blackout across the entire island. The hurricane destroyed the Puerto Rico Electric Power Authority's (PREPA) distribution network, and six weeks later, only 30% of customers had their power restored. It was predicted that it would take until June 2018 for power to be fully restored to all customers.
The impact of these hurricanes was exacerbated by the fragile state of Puerto Rico's electrical infrastructure. PREPA has faced long-term deterioration due to decades of underinvestment and insufficient maintenance. The electrical grid has aged faster than it can be repaired, and equipment failures in one part of the grid can cause outages across wider areas.
In September 2021, mechanical and maintenance problems affected various power plants, resulting in four days of consecutive rolling blackouts. Then, in September 2022, Hurricane Fiona caused another island-wide blackout, leaving citizens without power, without water, and without relief from extreme heat.
Most recently, in April 2025, another island-wide blackout occurred, affecting the main airport, hospitals, businesses, and tourists. The cause of this outage is still under investigation, but overgrown vegetation affecting the grid has been suggested as one possible cause. These hurricanes and power outages have had significant impacts on Puerto Rico's economy, infrastructure, and people.
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Fossil fuel-fired power plants
Puerto Rico relies heavily on fossil fuel-fired power plants to generate most of its electricity. In 2024, fossil fuel-fired power plants provided 93% of Puerto Rico's electricity-generating capacity. Petroleum-fired power plants provided 62% of the country's electricity generation capacity, followed by natural gas at 24%, coal at 8%, and renewables at 7%.
Puerto Rico has no proven reserves or production of fossil fuels. The Commonwealth has some renewable resources in the form of solar, wind, hydropower, and biomass, but it relies primarily on imported fossil fuels to meet its energy needs. The island's per capita petroleum consumption is about half of the US average.
The Puerto Rico Electric Power Authority (PREPA), also known as Autoridad de Energía Eléctrica or AEE, is Puerto Rico's publicly owned power utility. PREPA serves about 1.5 million customers, making it one of the largest electric utilities in the United States by the number of customers served. However, on a per-customer basis, PREPA provides less than half as much power as similar-sized mainland US utilities.
PREPA has suffered several outages that have left regions or the entire island of Puerto Rico without power. In September 2017, Hurricane Irma and Hurricane Maria made landfall two weeks apart and destroyed much of Puerto Rico's electricity transmission and distribution infrastructure. The country experienced another island-wide blackout in September 2022 when Hurricane Fiona struck. In addition to natural disasters, PREPA's electrical infrastructure has also been affected by underinvestment, poor financial oversight, and corruption scandals.
PREPA is exploring the use of natural gas-fired power plants and renewable energy with battery storage technology to provide a more reliable electricity supply. Under the Puerto Rico Energy Public Policy Act, PREPA must obtain 40% of its electricity supply from renewable resources by 2025, 60% by 2040, and 100% by 2050. To meet the 2020 Integrated Resource Plan goals, PREPA would need to procure 3,750 megawatts of renewable energy and 1,500 megawatts of battery energy storage.
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High electricity prices
Puerto Rico has some of the highest electricity prices in the United States. The island's electricity prices have nearly doubled since 2020, with customers of the Puerto Rico Electric Power Authority (PREPA) paying 33.4 cents/kWh for electricity, compared with the previous rate of 17.4 cents/kWh. This means that Puerto Ricans are paying about 8% of their income for electricity, while the average across the United States is 2.4%.
There are several reasons for Puerto Rico's high electricity prices. Firstly, the island has suffered from underinvestment and poor financial oversight in its electric power sector. PREPA, which is government-owned and operates as a unified electric grid, has accumulated over $9 billion in debt and filed for bankruptcy in 2017. The bankruptcy case has reportedly discouraged investment and hindered economic development. PREPA has also been affected by corruption scandals and frequent leadership changes.
Secondly, Puerto Rico's electricity infrastructure has been damaged by natural disasters, including hurricanes and earthquakes. In 2017, Hurricane Irma and Hurricane Maria devastated much of the island's electricity infrastructure, leaving many residents without power for months. In 2020, a 6.4-magnitude earthquake damaged the island's two largest power plants, causing widespread outages and increasing the reliance on petroleum for electricity generation. More recently, in 2022, Hurricane Fiona struck the island, causing further damage to the electric grid and an island-wide blackout.
Additionally, Puerto Rico relies heavily on fossil fuel-fired power plants, particularly petroleum, to generate most of its electricity. In 2024, petroleum-fired power plants provided 62% of the island's electricity generating capacity, with natural gas contributing 24%, coal 8%, and renewables only 7%. The island has no proven reserves or production of fossil fuels and must rely on imports, which can be subject to price fluctuations and supply disruptions.
The high electricity prices have significant implications for Puerto Rico's economy and residents. The territory has seen a population decline, with people leaving the island due to the impact of natural disasters and the economic situation. There have been calls for a comprehensive transformation of the energy sector, with a shift towards renewable energy sources, to reduce costs and provide a more resilient and modern electric grid. However, the current plans for overhauling the grid have been criticized for not moving fast enough away from fossil fuels, and it remains to be seen how effective they will be in addressing the issue of high electricity prices.
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Power outages and blackouts
Puerto Rico has been plagued by power outages and blackouts, which have had devastating consequences for its residents. The island's electric power sector has suffered from underinvestment, poor financial oversight, natural disasters, and an outdated grid. In September 2017, Hurricane Irma left 1 million residents without power. Just two weeks later, Hurricane Maria struck, causing an island-wide blackout that lasted 11 months, the longest in US history. The impact of these hurricanes was exacerbated by the fragile state of Puerto Rico's electrical infrastructure, which had been deteriorating for decades due to insufficient maintenance and investment.
The Puerto Rico Electric Power Authority (PREPA), which manages the island's power grid, has faced accusations of hoarding equipment needed to restore power after Hurricane Maria, further delaying the restoration of electricity to residents. PREPA has also accumulated over $9 billion in debt, with a federal oversight board stating that it would be impossible for Puerto Rico to repay the $8.5 billion requested by bondholders. The agency's bankruptcy has reportedly hindered economic development and discouraged investment in the island's electrical infrastructure.
In addition to hurricanes, other natural disasters such as earthquakes and tropical storms have also caused widespread power outages. The 6.4-magnitude earthquake in January 2020 significantly damaged the island's two largest power plants, Costa Sur and EcoEléctric, leading to a higher reliance on petroleum for electricity generation. Tropical Storm Isaac in August 2012 left 14,000 residents without power. More recently, in September 2022, Hurricane Fiona struck the island, leaving millions without power and causing an island-wide blackout.
Even without natural disasters, Puerto Rico has experienced frequent power outages due to equipment failures and an aging electrical grid. In September 2021, mechanical and maintenance problems at various power plants resulted in four days of consecutive rolling blackouts. The town of Adjuntas, however, has been working with researchers to develop innovative microgrids and solar power systems that have maintained electricity during island-wide blackouts, offering a potential solution to the island's power woes.
The frequent power outages and blackouts have had significant impacts on the lives of Puerto Ricans, leading to cancelled classes, protests, and an increased energy burden for residents, who already pay higher electricity rates than the average US household. The high energy costs, coupled with frequent outages, have sparked a strong movement towards renewable energy sources, with solar power being the fastest-growing source of renewable generation in Puerto Rico. Federal funds have also been allocated to increase the resilience of the island's electrical grid and advance clean energy initiatives.
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Aging electrical grid
Puerto Rico's electrical grid has been described as ''damaged" and "poorly managed", with residents experiencing frequent blackouts. The island's power infrastructure has suffered from underinvestment, poor financial oversight, natural disasters, and bureaucratic issues. The budget for maintenance has decreased over the years, and the electrical infrastructure has experienced long-term deterioration, with many power plants and substations operating beyond their intended lifespan.
The Puerto Rico Electric Power Authority (PREPA), the government-owned entity that manages the island's grid, has been accused of hoarding equipment needed to restore power after Hurricane Maria in 2017. PREPA has also been affected by corruption scandals and leadership changes. The agency has accumulated over $9 billion in debt, with a federal oversight board stating that it would be impossible for Puerto Rico to repay the $8.5 billion requested by bondholders. This has reportedly discouraged investment and hindered economic development.
The electrical grid's issues were highlighted in September 2022 when Hurricane Fiona knocked out 100% of the grid in some parts of Puerto Rico for up to four weeks. The island's aging electrical grid is struggling to keep up with increasing power demands, and its fossil fuel-heavy energy mix makes it particularly vulnerable to disruptions.
Community-led solar power projects and privately financed solar-plus-storage systems have gained traction as a potential solution to the island's energy woes. These systems can operate independently during blackouts while still being connected to the grid. As of March 2025, LUMA reported over 1.14 gigawatts of grid-connected distributed solar capacity and an additional 2.34 gigawatt-hours of distributed batteries connected to the grid. Solar power now accounts for more than 12.5% of Puerto Rico's total residential electricity consumption annually.
The U.S. Department of Energy (DOE) is also working with local stakeholders to strengthen the island's grid resilience and advance initiatives to enhance Puerto Rico's energy future. The Puerto Rico Grid Resilience and Transition to 100% Renewable Energy Study (PR100 Study) aims to identify pathways for the island to achieve its goal of 100% renewable energy by 2050.
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Frequently asked questions
Fossil fuel-fired power plants provide most of Puerto Rico's electricity. In 2024, petroleum-fired power plants provided 62% of the country's electricity, with natural gas at 24%, coal at 8%, and renewables at 7%.
Almost the entire population of Puerto Rico has access to electricity. However, there are frequent power outages and blackouts.
Power outages in Puerto Rico are often caused by natural disasters such as hurricanes and tropical storms. The country's electrical infrastructure is ageing and has suffered from underinvestment and poor maintenance.
Power outages in Puerto Rico are frequent, with residents experiencing blackouts that can last for several days or even months.
There is a growing movement in Puerto Rico to transition to solar power and microgrids as a way to improve the resilience of the electrical grid and reduce the country's reliance on fossil fuels. Federal funds have also been allocated to enhance energy security and increase energy affordability.
