Much has been written about the February events that led to extensive failures of the equipment and facilities of the ERCOT power grid. The tragic loss of life and significant financial pain have grabbed headlines and precipitated weeks of hearings and meetings among Texas policymakers and industry.
Clearly there were failures up and down the whole supply chain, with the biggest failure, in my opinion, being a breakdown of communication. In fact, I believe much of this catastrophic failure could have been avoided if we had better communication among all the entities.
There has been a lot of discussion on mandating winterization of electric facilities, but without meaningful improvements to the gas infrastructure, electrical weatherization will not bring much benefit as approximately half of the generation lost was gas fired (see graph below), of which most of that was due to a loss of fuel supply. The gas industry points back to the electric industry as the cause of its supply woes.
While there is some need for winterization, some very simple and cost-effective solutions can be implemented, that can make a real difference here and in the near term. These solutions do not require significant capital, drastic market structure changes or years to implement. While these probably wouldn’t have eliminated the need to cut load entirely, they could have significantly reduced the amount and perhaps duration so that these outages could have been truly rotated.
So, the question is the following: If all the gas facilities from wellheads to processing plants to pipeline compressor stations had been properly identified on the Critical Infrastructure list and not been curtailed, how much more gas would have been available? This would mean more generators would have stayed online and, therefore, less load would have been cut. Some work is needed on the Transmission Distribution Service Provider (TDSP) side as well. As more critical infrastructure is identified and as seen with this event, taking outages by open circuits doesn’t work. Distribution-level outages need to be executed at a more granular level.
An obvious example was in downtown Austin. There were pictures all over social media of downtown Austin lit up like a Christmas tree during the winter storm. Empty parking garages were fully lit. Why did this happen? Well, if you open the circuit that feeds a major section of downtown Austin you are taking out empty office buildings, but you are also taking out a hospital, condos, apartments, police stations, etc. Opening a circuit does not allow outages to distinguish between critical facilities, like a hospital, from non-essential loads, like parking garages. But there is a superior option, we have been paying for Automatic Meter Reading (AMR) for years. This gives the utility the ability to remotely read and control each individual meter. We need to put this technology to work to help if or when we need to implement load reduction.
On the ERCOT side of things, it would help if they would change the way they deploy intermittent gas generation in the days ahead of a forecast of drastic cold conditions.
Finally, there was confusion on the prioritization of gas supply. Peaker units cannot normally justify the cost of purchasing both firm gas supply and firm transport as they run so few hours across the year. This resulted in many of these units not being online in peak hours, magnifying the crisis. Normally, electric peaks occur in the summer, not at the same time as heating peak; so, the gas supply plan for peakers do not normally expect an event like the winter storm. This issue can be easily fixed as well.
The following are recommended changes to improve the resiliency of our power grid:
While this does not solve all the issues that demand attention, these low costs and easier–to–implement recommendations should be part of a comprehensive package to help improve the resiliency of our grid. A major portion of this crisis is a direct result of a breakdown of communication. Collectively, the energy industry lapsed and only collectively can we solve this.
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