Texas utilities have experienced at least two winter storms, Uri and Elliott, which impacted their ability to support the load demand during extremely cold temperatures.

Oncor is presenting insights from a system wide review of their capability to support energy loads at the transformer level and higher. The discussion follows Oncor's process for evaluating Uri and Elliott loading impacts and how they are working to prevent device failure due to overloading.

Oncor’s analysis identifies feeders, design standards, and process improvements to mitigate the impact of extreme-cold loading events. The utility discusses classification of heating types, new design standards and restoring meters through AMI to reduce impact of overloading outages.

Session Takeaways:

• Impact of Uri and Elliott temperatures on Oncor's loading
• Classification of heating types
• New design standards
• Reducing impact of overloading outages by restoring meters through AM