Texas both produces and consumes more energy than any state in the U.S. It controls one-quarter of U.S. proven oil reserves. Energy companies looking to grow or to establish a U.S. presence set up operations in Texas. The primary electricity transmission system in Texas is independent of the rest of the country (a long-time source of pride). The Electric Reliability Company of Texas, or ERCOT, is responsible for regulating the generation and supply of power to 85 percent of the state, except the extreme eastern and western portions.
The fundamental challenge of a closed system is that it must meet its own needs, and that has not happened. There are increasing concerns about rolling blackouts in America’s “energy capital.” NRG Energy reported that by 2016, Texas could experience four rolling blackouts a year, and strongly recommended that the state build more power generation reserves to improve grid reliability.
Old and inefficient power plants are being fired back up to meet demand peaks, which is an inefficient use of inefficient technology and is unreliable. The transmission system is outdated. Financial obstacles like the bankruptcy of Energy Future Holdings (and all the associated fallout) — which controls the largest retail utility and the largest power generation fleet in the state — overhang any possible solution. All these challenges combined with growing electricity demand amount to a potentially serious problem.
Much Bigger than Texas
Texas’s power problems are about much more than Texas. The obvious concern is that the direct economic implications could be much wider than just Texas. The state represents a huge portion of U.S. economic activity, and is a vital part of our national energy strategy. Perhaps more important than the direct economic considerations is that the fight over EPA regulations may be defined by the battles in Texas. Similarly, how the lack of long-term power price certainty is resolved (allowing adequate financing to support necessary new generation projects) will cause ripples throughout US power markets.
Texas’ larger utilities like NRG Energy are taking action primarily on the demand side, installing smart meters and using pricing mechanisms to “shed” customers during times of peak energy demand. In fact, ERCOT’s emergency response service is credited (along with some fortuitous timing of very high wind power output) with avoiding blackouts during the Polar Vortex this winter. ERCOT is planning to raise the System Wide Offer Cap, or the total amount of money energy service providers can make during peak demand times, to $9000 per megawatt hour by the summer of 2015. Increasing this cap on wholesale power prices is intended to attract greater investment, and Texas utilities will combine these price increases with other efforts to shed peak load demand.
On the supply side, ERCOT is currently overhauling its power forecasting methods to better predict when it may need to bring more power generation capacity online. FERC’s recent order 764, requiring that utilities and other power generation sources report power capacity in 15 minute increments, will push ERCOT in the direction of more flexibility and enable it to predict when demand will reach emergency levels. Developing a capacity market, which is used in many other power markets, is a possibility. In many ways capacity markets are still maturing, so a new take on capacity market design could have broader consequences.
ERCOT recently hit a record for wind power generation, reaching over 10,000 MW and 30 percent of total power generation. In Texas, as across the country, energy storage will be an important means of guaranteeing energy supply while supporting a renewable energy infrastructure. The largest battery storage facility is located in Texas, and ERCOT is working with the Energy Storage Association on plans to redesign the energy storage infrastructure.
Electric Vehicles are increasing in popularity across Texas; because of deregulation, electric utilities within ERCOT can charge EVs directly at power stations as a secondary income source. Utilities also value the power demand from charging stations as a way of offsetting the variability of wind power generation.
The state may also end its independence and isolation. While ERCOT independence may be a source of pride, it is running up against the limitations of a contained system. Significant emergency power was imported from Mexico during the Polar Vortex. Tres Amigas SuperStation, which will connect the Texas Interconnection to the Eastern and Western Interconnections is designed to reduce transmission bottlenecks, and may help the state meet its power needs and provide a larger market for Texas’s wind power generation.
This article was originally published on EnergyTrends Insider and was republished with permission.