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Grid ReliabilityPerformance Review· 3 min read· in Energy

Unplanned Power Plant Outages Fall Sharply During 2026 Winter Storms, FERC-NERC Report Shows

A joint federal review found that weatherization upgrades and interregional power transfers helped the U.S. grid avoid rolling blackouts during January's severe cold snaps. However, regulators caution that the system was not tested to the extremes of prior crises, leaving critical vulnerabilities unresolved.

By Miguel Carvalho

Federal Regulators 40%Grid Analysts 40%Legal Scrutiny 20%
Federal Regulators
Argue that mandatory weatherization standards and improved gas-electric coordination are tangibly strengthening the bulk electric system's resilience.
Grid Analysts
Caution that the 2026 storms did not test the grid as severely as prior crises, and that reliance on interregional transfers remains a vulnerability.
Legal Scrutiny
Argue that the Department of Energy's use of emergency orders to mandate generation oversteps statutory authority and disrupts market stability.

Perspectives this story doesn't cover

  • Consumer advocates concerned about the cost of weatherization upgrades being passed to ratepayers.
  • Data center operators regarding the feasibility of deploying their backup generation for grid support.
49,700 MW
Peak Eastern Interconnection outages (Jan 2026)
90,500 MW
Peak Eastern Interconnection outages (Dec 2022)
19,420 MW
Peak ERCOT outages (Jan 2026)
35,300 MW
Peak ERCOT outages (Feb 2021)
35 GW
Unused backup generation authorized by DOE

Staff at the Federal Energy Regulatory Commission and the North American Electric Reliability Corporation reported on September 10 that peak power plant outages across the Eastern Interconnection reached 49,700 megawatts during January 2026 cold weather.[1][2]

That figure represents a sharp drop from the 90,500 megawatts of capacity lost during Winter Storm Elliott in December 2022. In Texas, the Electric Reliability Council of Texas saw outages peak near 19,420 megawatts, compared to the catastrophic 35,300 megawatts lost during Winter Storm Uri in February 2021. Neither region was forced to shed firm load—meaning no rolling blackouts were ordered—even as United States electric use peaked at 666 gigawatts.[1][4]

The joint report credits the improved performance to the implementation of cold weather reliability standards, advanced generator commitments, and better coordination between natural gas pipelines and electric grid operators. "The progress we've made demonstrates that careful analysis and action can protect critical infrastructure during the most challenging conditions," FERC Chairman Laura V. Swett said following the report's release.[2]

Peak generator outages fell sharply during the 2026 winter storms compared to previous crises.

However, the comparison flatters the result. Both Elliott and Uri represent the two worst generator failures of the modern American winter. Measuring the 49,700 megawatts and 19,420 megawatts of lost capacity against those events shows improvement from a catastrophic baseline, not proof that the fleet can now hold under a worst-case scenario. Winter Storms Fern and Gianna never pushed either region to firm load shed, meaning the 2026 system was never tested at the severity that produced those older numbers.[1]

Both Elliott and Uri represent the two worst generator failures of the modern American winter.

The report also heavily credits interregional power transfers, which act as a dependency rather than a physical hardening of the grid. The Midcontinent Independent System Operator imported about 9 gigawatts, mostly from the PJM Interconnection, while Florida exported power during Fern and imported during Gianna. Both cases worked because the neighboring region had a surplus at the exact hour of need. A storm that puts PJM and MISO under peak stress simultaneously would remove the resource the report names as decisive.[1]

During the storms, the Department of Energy issued 15 emergency orders under Section 202(c) of the Federal Power Act, authorizing grid operators to deploy backup generation at data centers and other major facilities. The DOE estimated that more than 35 gigawatts of unused backup generation was available nationwide to mitigate blackouts.[1][3]

Despite the authorization of 35 GW of backup generation, grid operators did not need to deploy it during the January storms.

Yet, an authority that goes unused proves nothing about whether it works in practice. ERCOT reported that it never called for conservation, never issued an Energy Emergency Alert, and saw no systemwide outages during Fern. Robert Clark, an engineer in FERC’s Office of Electric Reliability, confirmed that no one called on backup generation at data centers during the 2026 storms. The orders therefore stand untested in the field.[1][4]

The reliance on emergency orders is also facing legal headwinds. On September 11, a federal appeals court vacated a separate DOE emergency order that had forced a Michigan coal plant to keep running, ruling that the department acted outside its statutory authority. The court's decision limits the administration's ability to unilaterally intervene in energy markets to prevent power plant retirements, casting doubt on how broadly the DOE can wield its emergency powers during future grid crises.[5]

While the electric and natural gas systems survived the multi-day stress, FERC and NERC staff flagged ongoing gaps in load forecasting and infrastructure. Electric and gas entities agree that more gas storage and pipeline transportation capacity would improve reliability during Arctic cold, leaving the question of whether the grid is truly winterized or simply got lucky with the weather pattern.[1][2]

What we don’t know

  • Whether the grid could withstand a severe winter storm that peaks demand in both the Midwest and the East Coast simultaneously, eliminating the ability to transfer power between regions.
  • How effectively data centers and other large loads could actually deploy their backup generation to support the grid, as the DOE's emergency orders went unused.
  • How recent federal court rulings limiting the DOE's emergency authority will impact future crisis response strategies.

Sources

Source coverage

5 outlets

3 viewpoints surfaced

Federal Regulators 40%Grid Analysts 40%Legal Scrutiny 20%
  1. [1]Utility DiveGrid Analysts

    Unplanned power plant outages fall sharply during 2025/26 winter storms: FERC-NERC report

    Read on Utility Dive
  2. [2]Federal Energy Regulatory CommissionFederal Regulators

    FERC, NERC Review Shows Bulk-Power System Improvements in Preparation and Coordination During Winter 2026 Arctic Cold Period

    Read on Federal Energy Regulatory Commission
  3. [3]U.S. Department of EnergyFederal Regulators

    Energy Secretary Issues Emergency Order to Secure Texas Grid Amid Winter Storm Fern

    Read on U.S. Department of Energy
  4. [4]Electric Reliability Council of TexasGrid Analysts

    Post-Event Report - Winter Storm Fern

    Read on Electric Reliability Council of Texas
  5. [5]Canary MediaLegal Scrutiny

    Court rules that Trump can’t force a Michigan coal plant to keep running

    Read on Canary Media

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