From January 23 to 27, 2026, Winter Storm Fern impacted the United States, bringing heavy snowfall, sleet, freezing rain, ice accumulation, and record-breaking cold temperatures.
The storm affected many regions across the country, ranging from the Southwest to the Northeast, resulting in hazardous conditions and widespread disruptions.
At least 42 deaths have been attributed to the storm nationwide. In what experts described as a historic event, Winter Storm Fern also triggered power outages affecting more than 1 million customers, with the hardest-hit areas in Texas, Louisiana, and Tennessee.
As the storm swept across the U.S., real-time wholesale electricity prices surged dramatically—from about $200 per MWh to more than $1,800—driven by demand exceeding forecasts in regions such as Virginia, home to the world’s largest concentration of AI data centers.
What caused the extreme weather and power disruptions
Meteorologists link the extreme weather to changes in the Northern Hemisphere’s polar vortex—a large mass of cold, rotating air near the poles that is typically contained during winter.
When it weakens or shifts, frigid air can spill into lower latitudes. This year, large parts of the continental United States experienced their coldest temperatures since 2014.
While utilities and grid operators had anticipated the storm and implemented preparedness measures—helping to prevent even more widespread outages—significant challenges remain. The key issue is how to improve grid reliability and prevent extreme price spikes during future weather events.
Why the power grid struggled
According to a World Resources Institute (WRI) analysis, multiple factors contributed to the outages. Ice accumulation weighed down tree branches, causing them to snap and damage power lines. In some cases, ice buildup directly caused transmission lines to fail.
Extreme cold also reduced the performance of power generation systems. Nearly 21 gigawatts of natural gas generation capacity were forced offline—enough to power millions of homes. Winter storms can affect every part of the electricity system, from generation to transmission and distribution.
Natural gas, which accounts for about 43% of U.S. electricity generation, is particularly vulnerable during extreme cold if infrastructure is not properly winterized. Equipment such as power plants, sensors, pipelines, and gas wells can freeze or malfunction. At the same time, heavy snow and ice can reduce transmission capacity and make it more difficult to deliver electricity where it is needed.
How the U.S. can build a more resilient grid
The WRI highlights two key strategies to improve the reliability and affordability of the U.S. power system.
First, it is essential to increase the system’s flexibility. This involves enhancing the grid’s ability to respond in real time to changes in supply and demand. Upgrading aging infrastructure, such as substations and transmission lines, and deploying advanced sensors and advanced transmission technologies (ATTs) can help operators quickly detect and resolve issues. These improvements can reduce outages and lower long-term operational costs.
Second, diversifying the energy mix by incorporating more renewable energy can strengthen resilience. Overreliance on a single fuel source increases vulnerability during disruptions. While renewable energy sources such as wind and solar are weather-dependent, geographic diversity allows them to contribute even during extreme conditions.
For example, during Winter Storm Elliot, about 7% of unavailable generating capacity was offset by a combination of wind, solar, nuclear, and hydropower. This demonstrates the value of a diversified energy system in maintaining reliability during crises.
Lessons from winter storm Fern
Winter Storm Fern exposed both the vulnerabilities and opportunities within the U.S. energy system. While the storm caused widespread disruption, economic strain, and loss of life, it also underscored the urgent need for grid modernization, increased flexibility, and energy diversification.
Investing in advanced technologies and expanding a balanced energy mix will be critical to building a more resilient power infrastructure system—one capable of withstanding future extreme weather events while delivering reliable and affordable electricity.
Sources
Winter Storm Fern Brings Heavy Snow And Ice Across North America. (2026, January 27). DOGO News. Retrieved from https://www.dogonews.com/2026/1/27/winter-storm-fern-brings-heavy-snow-and-ice-across-north-america
Shapiro, E., Brennan, D. & Hutchinson, B. (2026, January 28). Winter storm updates: Dozens dead across US in wake of massive snowfall, deep freeze. ABC. Retrieved from https://abcnews.go.com/US/live-updates/winter-storm-live-updates-tracking-dangerous-ice-snow/?id=129469173
Logan, M. (2026, January 28). Historic Winter Storm Fern – One for the Record Books. Retrieved from https://news.norwall.com/historic-winter-storm-fern-one-for-the-record-books/
Brown, S. (2026, January 27). Expert Q&A: How Can the US Avoid Power Outages During Winter Storms? WRI. Retrieved from https://www.wri.org/insights/how-can-US-avoid-winter-storm-blackouts?
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