Beatrice Lang
Puerto Rico has a history of problems with its electricity supply. In 2017, Hurricanes Irma and Maria caused the collapse of most of the transmission and distribution systems in Puerto Rico, leading to one of the longest blackouts in US history. The hurricane exposed the feeble nature of the island's electrical grid, which has been criticised for a lack of investment and failure to establish backup systems. Since the hurricanes, efforts have been made to modernise and improve the resilience of the grid, with a focus on increasing the use of renewable energy sources. However, bureaucratic issues, policy disagreements, and privatisation have slowed progress, and Puerto Rico continues to experience blackouts, with one occurring as recently as April 2025.
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What You'll Learn
Puerto Rico's electricity issues
Puerto Rico has a history of problems with its electricity supply. The island has suffered extensive power grid issues since Hurricane Maria devastated the region in 2017, leaving residents in some areas without electricity for almost a year. The damage was caused by the collapse of most of the island's transmission and distribution system. The fragile power grid, which was already crumbling due to a lack of maintenance and investment, was further exacerbated by the impact of subsequent hurricanes and tropical storms.
In the aftermath of Hurricane Maria, the U.S. Department of Energy (DOE) and six DOE national laboratories stepped in to support Puerto Rico's energy system stakeholders. They provided tools, training, and modelling to enhance the resilience of the electric system against future disruptions. Despite these efforts, Puerto Rico continued to experience periodic blackouts and power surges, causing significant frustration and economic losses for residents and businesses.
In April 2025, a massive blackout left the entire island of Puerto Rico without power, affecting essential services such as the main international airport, hospitals, and tourism. This outage resulted from a combination of factors, including a failure in the protection system and vegetation on a transmission line. The event highlighted the continued vulnerability of the island's power infrastructure and the urgent need for more reliable energy sources.
To address these challenges, Puerto Rico has set ambitious renewable energy goals. The Puerto Rico Energy Public Policy Act (Act 17), passed in 2019, aims for the island to meet 100% of its electricity needs through renewable sources by 2050. This includes interim targets of 40% by 2025 and 60% by 2040, as well as the phase-out of coal-fired generation by 2028. The transition to renewable energy and the modernisation of the power grid are crucial steps towards ensuring a more stable and reliable electricity supply for Puerto Rico.
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Hurricane Maria's impact
Hurricane Maria had a devastating impact on Puerto Rico, causing widespread destruction and a major humanitarian crisis. Making landfall on September 20, 2017, as a Category 4 hurricane, Maria brought sustained winds of up to 155 mph, heavy rainfall, and storm surges to the island. The hurricane caused an estimated 2,982 fatalities and $90 billion in damage, making it the strongest storm to hit Puerto Rico in nearly 90 years.
One of the most significant impacts of Hurricane Maria was the destruction of Puerto Rico's electrical grid. The storm knocked out power to 100% of the island, leaving all 3.4 million residents without electricity. This was due to the damage to transmission lines and power plants, which had already been suffering from inadequate investment and a lack of backups. The hurricane also severely damaged 95% of cell towers, crippling communication networks and leaving most of the island in the dark, both literally and metaphorically.
The lack of electricity and communication systems had far-reaching consequences for the people of Puerto Rico. Access to clean water and food became limited, and the storm also disrupted the lives of around 350,000 public school students. It took nearly five weeks for the first public schools to reopen after the hurricane, and even then, most were operating without power. The psychological impacts of the hurricane on children and young people were significant, with research showing that nearly half of Puerto Rican children's homes were damaged, and many experienced fear and trauma during the storm.
The road to recovery for Puerto Rico's electrical grid has been long and challenging. In 2020, the Federal Emergency Management Agency (FEMA) approved $9.6 billion to rebuild the grid, with an additional $3.4 billion in federal funding provided since. However, bureaucratic issues, policy disagreements, and privatization disputes have slowed progress. In 2021, Puerto Rico privatized the grid by engaging LUMA Energy to operate the system, but a shortage of experienced workers has led to increased service restoration times and voltage fluctuations.
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The role of the US Department of Energy
Puerto Rico has a history of problems with its electricity supply. In September 2017, Hurricanes Irma and Maria caused the collapse of most of the island's transmission and distribution system, resulting in one of the longest blackouts in US history. The hurricanes left some residents without electricity for almost a year and caused severe disruptions to various sectors, including communications, water, transportation, and healthcare.
Since the 2017 hurricanes, the US Department of Energy (DOE) has played a crucial role in Puerto Rico's energy recovery and modernization. The DOE, along with six national laboratories, has provided energy stakeholders in Puerto Rico with tools, training, and modeling support. The goal is to enhance the resilience of the electric system against future disruptions. The DOE's specific roles and contributions include:
- Leveraging its network of National Laboratories: The DOE utilizes its resources and expertise to provide advanced planning and modeling capabilities to stakeholders in Puerto Rico. This includes technical assistance in developing FEMA proposals and enhancing electrical systems.
- Unbiased coordination and convening: The DOE serves as an unbiased facilitator among federal and local decision-makers. They ensure effective coordination and collaboration among relevant entities, promoting alignment with energy public policy.
- Data-driven investment decisions: The DOE enables investment choices in Puerto Rico's energy sector to be guided by world-class data, modeling, and analysis. This helps ensure that recovery actions are well-informed, coordinated, and aligned with industry best practices.
- Adherence to best practices: The DOE ensures that funded recovery actions adhere to industry standards and are coordinated across sectors. They provide guidance and support to ensure that energy recovery efforts are effective and sustainable.
- Technical assistance: The DOE, through its National Laboratories, provides publications, tools, webinars, and other resources to offer technical assistance to federal and local stakeholders. This includes resources related to renewable energy, energy efficiency, and grid resilience.
The DOE's role in Puerto Rico's energy recovery and modernization aims to strengthen the resilience and reliability of the electric system, reducing the impact of future disruptions and improving energy access for the residents of Puerto Rico.
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Power restoration efforts
In 2017, Hurricanes Irma and Maria caused the collapse of most of the transmission and distribution systems in Puerto Rico, resulting in one of the longest blackouts in US history. The impact of these hurricanes left residents in certain areas without electricity for nearly a year. The instability of the electrical grid was further exposed by the damage to the electricity infrastructure, which caused significant disruptions in numerous sectors, including communications, water and wastewater, transportation, healthcare, and critical manufacturing.
In the aftermath of the hurricanes, the US Department of Energy (DOE) and its national laboratories have played a crucial role in Puerto Rico's energy recovery. They have provided local stakeholders with the necessary tools, training, and modelling support to enhance the resilience of the electric system against future disruptions. This includes leveraging the capabilities of the National Laboratories to offer advanced planning and modelling, serving as an impartial coordinator among federal and local decision-makers, driving investment decisions with data and analysis, and ensuring that recovery actions adhere to industry best practices.
To address the ongoing challenges with the power grid, the Puerto Rico legislature passed the Puerto Rico Energy Public Policy Act (Act 17) in 2019. This legislation sets ambitious goals for the island's energy future, aiming for 100% renewable energy by 2050, with interim targets of 40% by 2025 and 60% by 2040. The act also calls for the phase-out of coal-fired generation by 2028 and a 30% improvement in energy efficiency by 2040. However, progress towards these targets has been slow, and in September 2022, Hurricane Fiona once again knocked out the entire grid in some parts of Puerto Rico, underlining the urgent need for grid modernisation.
In addition to government efforts, private contractors like Luma Energy, which operates the island's power transmission system, are also involved in power restoration. Luma Energy has been working to restore power after major blackouts, such as the one in April 2025, which left the entire island without electricity. Despite these efforts, Puerto Rico continues to experience periodic blackouts and unreliable electricity services, causing significant disruptions to residents and businesses.
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The need for a modern and reliable grid
Puerto Rico has a history of problems with its electricity supply. The island has suffered extensive power grid problems since Hurricane Maria devastated the region in 2017. The damage caused by the hurricane, coupled with the existing instability of the grid, led to one of the longest blackouts in US history, with residents in some parts of the territory without electricity for almost a year. The impact of the hurricane exposed the underlying fragility of Puerto Rico's power infrastructure, which was already crumbling due to a lack of maintenance and investment.
The consequences of the blackout were far-reaching, severely disrupting critical sectors such as communications, water and wastewater management, transportation, healthcare, and critical manufacturing. The instability of the grid has resulted in periodic blackouts, causing significant challenges for residents and businesses, who have had to endure cancelled plans, damaged appliances, and electronics due to unpredictable power surges.
To address the issue, the Puerto Rico legislature passed the Puerto Rico Energy Public Policy Act (Act 17) in 2019, setting ambitious renewable energy goals. The act aims for the commonwealth to meet 100% of its electricity needs through renewable sources by 2050, with interim targets of 40% by 2025 and 60% by 2040. Additionally, there is a focus on improving energy efficiency by 30% by 2040 and phasing out coal-fired generation by 2028. These targets not only aim to enhance the reliability of the grid but also contribute to environmental sustainability.
The U.S. Department of Energy (DOE) has also played a pivotal role in Puerto Rico's energy recovery. They have provided tools, training, and modelling support to local stakeholders, enabling them to plan and operate the electric system more resiliently. By leveraging its network of national laboratories, the DOE ensures that investment decisions are driven by world-class data, modelling, and analysis, adhering to industry best practices and aligning with energy public policy.
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Frequently asked questions
Yes, Puerto Rico's power grid was already crumbling before the hurricane due to a lack of maintenance and investment. The island has a history of problems with its electricity supply.
Hurricanes Irma and Maria caused most of the transmission and distribution systems in Puerto Rico to collapse, leading to one of the longest blackouts in US history. The hurricane left residents in some parts of the territory without electricity for almost a year.
No, Puerto Rico's power grid remains fragile after the hurricane. The island has experienced extensive power grid problems since the hurricane, including periodic blackouts that have disrupted the lives of residents and businesses.
