As a reliability SME for much of my career, I have seen reliability and resilience be used together more often. From my perspective reliability is making sure the lights stay on and resilience makes sure they recover from any disruption or challenges. While that is a little too simplistic, it gets the point across. Resilience of electrical power systems is a critical concern for any power system provider but given the increasing frequency of extreme weather events, cyber threats, and the transition towards renewable energy sources, while similar in both the US and EU, there are some key differences. Resilience, in this context, refers to the ability of power systems to withstand, adapt to, and recover from disruptions. Resilience Challenges in the US One of the primary concerns in the US is the aging infrastructure. Many components of the US grid, including transformers and transmission lines, are decades old and susceptible to failure. Additionally, the US experiences a high frequency of natural disasters, such as hurricanes, wildfires, and floods, which can cause significant damage to power infrastructure. For instance, Hurricane Maria in 2017 devastated Puerto Rico’s power grid, leaving millions without electricity for months. Cybersecurity is another critical challenge. The US power grid is increasingly reliant on digital technologies, making it vulnerable to cyberattacks. The 2021 Colonial Pipeline cyberattack highlighted the potential for cyber threats to disrupt critical infrastructure, including power systems. The modernization of grid infrastructure is a key focus, with investments in smart grid technologies that improve monitoring and control capabilities. Resilience Strategies in the US To address these challenges, the US has implemented several strategies to enhance power system resilience. The modernization of grid infrastructure is a key focus, with investments in smart grid technologies that improve monitoring and control capabilities.
Let’s begin at the beginning. What exactly is The US Department of Energy (DOE) has also launched initiatives to enhance cybersecurity, such as the Cybersecurity for Energy Delivery Systems (CEDS) program. Additionally, the integration of distributed energy resources (DERs), such as wind, solar and battery storage, is being promoted to increase grid flexibility and reduce reliance on centralized power plants. Microgrids, which can operate independently from the main grid, are also being developed to provide localized resilience during outages. Resilience Challenges in Europe Europe faces similar resilience challenges, albeit with some regional variations. The continent’s power system is highly interconnected, which can be both a strength and a vulnerability. While interconnectivity allows for efficient energy distribution, it also means that disruptions in one area can have cascading effects across multiple countries. Europe is also grappling with the transition to renewable energy sources, which, while essential for reducing carbon emissions, introduces variability and unpredictability into the power supply. The increasing frequency of extreme weather events, such as heatwaves and storms, further exacerbates these challenges. Resilience Strategies in Europe European countries have adopted a range of strategies to enhance power system resilience. The EU has established regulatory frameworks, such as the Clean Energy for All Europeans package, to promote grid modernization and the integration of renewable energy. Investments in interconnectors, which link national grids, are being made to improve cross-border electricity flows and enhance system stability. Europe is also a leader in the development of offshore wind farms, which provide a reliable and renewable energy source. Additionally, the EU is investing in research and innovation to improve energy storage technologies, which are crucial for balancing supply and demand in a renewable-heavy grid.
The resilience of electrical power systems in the US and Europe is of paramount importance in the face of evolving challenges. Both regions are making significant strides in modernizing their grids, enhancing cybersecurity, and integrating renewable energy sources. However, continued investment and innovation are necessary to ensure that power systems can withstand and recover from future disruptions. By learning from each other’s experiences and collaborating on technological advancements, the US and Europe can build more resilient power systems that support sustainable and secure energy futures. Investments in interconnectors, which link national grids, are being made to improve crossborder electricity flows and enhance system stability. This article was originally published in the August/September 2025 issue of the Power Systems Technology magazine, which you can access  here.
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This article was originally published in the September 2025 issue of the Substation Solutions: Design, Automation and Monitoring magazine.

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