UCS Report Highlights Need for Grid Resilience Amid Climate Challenges

As climate change continues to intensify, its impact on extreme weather events poses significant challenges to the electric grid, particularly in the central United States. A recent report by UCS, titled Power After the Storm, examines this issue in depth. This study builds upon earlier findings from Keeping Everyone’s Lights On, focusing on how climate change exacerbates extreme weather and its threat to power systems.

Modernizing the electric grid requires more than just reducing emissions; it necessitates proactive investments to fortify the grid against unavoidable climate impacts. With extreme weather events expected to increase in frequency and severity, preparing the grid becomes as crucial as personal readiness for natural disasters, akin to hurricane preparedness on the Gulf Coast.

Understanding Climate Risks to Enhance Grid Resilience

The Midcontinent Independent System Operator (MISO) is a key player in the central U.S. electric grid’s operation. While MISO focuses on short-term preparations for extreme weather, its long-term planning often overlooks future climate risks. This oversight is concerning, as billions are being invested in grid upgrades intended to last decades.

Two strategic approaches are crucial for building a climate-resilient grid: First, collaboration among MISO, states, utilities, and communities is essential to define goals and strategies. Second, a transparent, science-based assessment of climate-related risks must be conducted. These steps can ensure that investments are comprehensive and serve the most vulnerable communities.

MISO’s Focus on Immediate Weather Preparations

MISO engages in various preparedness exercises throughout the year:

1. Emergency preparedness exercises: MISO coordinates with utilities to respond effectively to emergencies, including extreme weather, to minimize outages.
2. Annual system performance assessments: These assessments test the grid’s resilience to potential failures, ensuring power can be rerouted during disruptions.
3. Seasonal risk and preparedness assessments: Focused on summer and winter, these assessments evaluate energy demand and system readiness in anticipation of extreme weather.
4. Week-, day-ahead, and real-time forecasting: MISO plans operations based on weather forecasts to manage demand and ensure system reliability during severe conditions.

While these efforts are necessary, they primarily focus on the present, lacking a forward-looking approach to mitigate future extreme weather risks. MISO’s long-term planning should incorporate climate projections to better prepare for evolving threats.

Investing in a Future-Proof Grid

MTEP’s Shortcomings

The MISO Transmission Expansion Plan (MTEP) is an annual process for approving transmission projects. However, it lacks a forward-looking perspective on climate risks, failing to address potential multiple facility outages from extreme weather and not pursuing cost-effective solutions.

LRTP’s Limited Focus

The Long-Range Transmission Planning (LRTP) process, critical for future investments, inadequately considers extreme weather risks. It primarily focuses on historical data and neglects diverse weather threats, such as transmission and power plant outages, and community-specific vulnerabilities.

Anticipating Changes in Grid Resilience Strategies

Looking ahead, two developments could significantly impact grid planning:

1. New requirements for extreme temperature planning: In 2023, FERC introduced rules mandating transmission planners to consider extreme heat and cold scenarios. How robustly MISO implements these requirements will be pivotal.
2. Updating planning methods for resilience investments: MISO’s planning processes are set to be reviewed in 2026, offering a chance to integrate climate science and community needs into grid resilience planning.

Pathways to a Resilient Electric Grid

Building a resilient grid involves understanding risks and fostering collaboration. The Power After the Storm report suggests several actions:

1. Conduct comprehensive risk assessments: MISO, states, and utilities should collaborate on a sector-specific climate risk assessment.
2. Engage communities: Involving communities ensures investments align with local resilience efforts and priorities.
3. Ensure accountability: Coordination among federal, regional, state, and local entities is essential for a cohesive response to climate challenges.

As climate change progresses, the electric grid must adapt to ensure reliable power supply during increasing extreme weather events. Strategic investments, informed by science and community input, are vital for a resilient and equitable energy future.