Has the Texas Grid Been Winterized?

In February 2021, Winter Storm Uri brought record-breaking cold temperatures to Texas for nearly a week. This storm exposed a crucial vulnerability in the state’s power and water infrastructure. For up to six days, Texans were without heat, power, and water, trapped in their homes by frozen air and icy roads that were too dangerous to traverse.

The grid failed so spectacularly for several reasons:

Power infrastructure was not winterized
The state was highly dependent on un-winterized natural gas power plants for electricity
The Texas grid is isolated from other states
Demand for electricity surged as millions of people tried to heat their homes
Lack of preparedness by ERCOT
Failures of communication and coordination between ERCOT, state officials, utility companies, gas suppliers, electricity providers, and power plants
No lessons learned from previous winter storms of similar intensity

These issues fell upon each like dominos, leading to power outages for millions, the deaths of hundreds of Texans, and billions of dollars in damages. This catastrophe highlighted the need for swift and sweeping upgrades and protections against future extreme weather events.

Every year since 2021 when winter draws near, Texans wonder whether recent improvements to the grid were substantial enough to keep them safe in the face of another storm like Winter Uri.

In this article, we’ll dive into the specific legislation enacted by the Texas state government in response to the disaster and explore whether the relevant parties have done their part to winterize the Texas grid.

Texas state legislature’s response to 2021 Winter Storm Uri

In March 2021, just a few weeks into the aftermath of Winter Storm Uri, Texas lawmakers introduced and passed significant legislation aimed at upgrading the state’s power infrastructure and preventing repeated failures. The bill, Senate Bill 3 (SB3), included many measures such as:

Requirements to weatherize gas supply chain and pipeline facilities that sell electric energy within ERCOT, and penalties up to $1 million for violation of these requirements
Requirement for ERCOT to procure new power sources to ensure grid reliability during extreme heat and extreme cold
Designation of specific natural gas facilities that are critical for power delivery during energy emergencies
Development of an alert system that is to be activated when supply may not be able to meet demand
Requirement for the PUCT to establish an emergency wholesale electricity pricing program

Weatherization measures implemented by Texas natural gas plants

In the Railroad Commission of Texas’ May 2024 document regarding guidance for weatherization practices for gas supply chain and pipeline facilities, they laid out a couple dozen solutions for preventing harm to the grid from severe winter weather.

These solutions include (but are not limited to) the following:

Installation of insulation on critical components of a facility
Construction of permanent or temporary windbreaks, housing, or barriers around critical equipment to reduce the impact of windchill
Guidelines for the removal of ice and snow from critical equipment
Instructions for the use of temporary heat systems on localized freezing problems like heating blankets, catalytic heaters, or fuel line heaters

The question still remains—have these updates been implemented? According to Daniel Cohan, professor of environmental engineering at Rice University, power plants across Texas have installed hundreds of millions of dollars worth of weatherization upgrades to their facilities.

In ERCOT’s January 2022 winterization report, they stated that 321 out of 324 electricity generation units and transmission facilities fully passed the new regulations.

Is the Texas grid prepared for another Winter Uri?

Utilities, power generators, ERCOT, and the PUCT have all made changes to their operations and facilities since 2021 to be better prepared for extreme winter weather. Are these changes enough? Has the Texas grid officially been winterized?

At this point, it’s not possible to say for certain. Since Winter Storm Uri in 2021, subsequent winter storms have paled in comparison. Temperatures have not reached the same lows, there has been less snow and ice, and instances of winter weather have not lasted for as many days.

If another winter weather storm arrives, blanketing nearly the entire state with several inches of ice, we are likely to at least experience many localized outages. When tree branches cannot support the weight of the ice, they can snap and knock out power lines to neighborhoods across the state. In the instance of a downed power line, we must rely on regional utilities to act quickly to restore power.

The only true way for Texans to know if the grid is ready for another storm is for Mother Nature to unleash another test. If the grid can better withstand, we’ll have our answer, and vice versa.

Written by Graham Lumley

Graham Lumley is the Growth Product Manager at BKV Energy, a retail electricity provider in Texas' deregulated market, where he has worked since 2023. He analyzes customer usage and billing data, helps develop BKV's fixed-rate plans, and creates tools to simplify Texas electricity shopping. He has written over 200 articles on Texas electricity rates, delivery charges, plan types, energy generation, and more to help Texans understand their bills and pay less. With over 10 years of experience in consumer products, marketing, and energy, he explains the Texas electricity market in plain language.