“it wasn’t as if those running the Texas energy system’s various fiefdoms—the grid, the power plants, the natural gas–production facilities—hadn’t been warned about the dangers of severe weather. Hell may not freeze over, but history suggests that Texas’s energy system does—and with some frequency. In 1989, in 2003, and in 2011, the state experienced, to varying degrees, simultaneous shutdowns of power plants and parts of its natural gas–producing infrastructure, as significant swaths of both of those critical systems were incapacitated by arctic temperatures, triggering blackouts.
The frigid weather during the first four days of February 2011 knocked off enough power generation throughout ERCOT—about 29,000 megawatts of capacity—that ERCOT initiated blackouts affecting about 3.2 million customers, according to a voluminous postmortem of the failure produced in August 2011 by the Federal Energy Regulatory Commission and the North American Electric Reliability Corp. That report suggested the state add teeth to its effort to gird its energy infrastructure for wintry weather. Among its policy recommendations was that in states in the Southwest, including Texas, legislatures require power companies to submit winterization plans and give their public-utility commissions the authority to require senior executives of power companies to sign off on those plans and the authority “to impose penalties for non-compliance.” Magness, the ERCOT chief, said that in the wake of the 2011 report he and others met with Texas power generators to suggest that they better winterize their facilities. He was asking, not telling. “It wasn’t a conversation like, `I’m your regulator and you have to do this,’” he recalled. “It was sharing those best practices.””
“Under the deregulation scheme passed by the Legislature more than two decades ago, Texas has a market design that allows generators to make money only by selling juice—not for investing in equipment that could help produce extra power in the event of an emergency. Critics contend that this approach, part and parcel of Texas’s aversion to regulation, makes the state’s energy system less reliable, even as it boosts profits for some market participants. Based on their biographies on the ERCOT website, at least eleven of the fifteen ERCOT board members have current or prior ties to the energy industry.”
“Texas lawmakers, as they investigate what went wrong this past week, ought to explore weatherization mandates.”
“better weatherizing power infrastructure, like inducing electricity producers to invest in extra generating capacity, likely would raise Texans’s electricity rates. “Is it worth the cost to consumers?” he asked. I asked him if ERCOT had any answer to that question. “I am not aware,” he said, “that we have ever conducted a real cost-benefit analysis on that topic.””
“the electricity blackout and frozen pipes in Texas had significantly curtailed the state’s production of oil and natural gas. IHS estimated that nearly 20 percent of natural-gas production, and perhaps an equal or greater percentage of oil production, in the continental U.S. in the first half of February had been shut in—and that the Permian Basin, the big oil-producing region that sits largely in West Texas, accounted for the biggest share of that production drop.
A couple of hours later, the governor, who earlier in the week had called for top ERCOT leaders to resign, issued an announcement. Years after Texas officials had been advised to do so, Abbott said he would ask the Legislature to mandate the winterization of power plants across the state—and to “ensure the necessary funding” for it.”
“For residents of the Lone Star State, the problem stems from both a record spike in electricity demand in a place that rarely gets this cold, as well as an unexpected drop in the supply of energy from natural gas, coal, wind, nuclear, and solar sources besieged by cold and ice.
This combination of shortfalls has forced power grid operators to conduct rolling blackouts, where power is shut off to different areas for a limited period of time. Local utilities are asking customers to conserve power and set their thermostats lower. For some customers, these blackouts aren’t rolling, instead stretching on for an unknown duration. On Tuesday afternoon, grid operators told Texas legislators that outages could last for days and that they weren’t sure when the power outages would end.”
“Ordinarily, ERCOT plans for winter to be much warmer and anticipates a lower energy demand. Power providers often schedule downtime and maintenance during the winter months to prepare for the massive annual surge in electricity demand in the hot Texas summer. The state’s ample wind and solar energy resources are also diminished in the winter, so ERCOT doesn’t depend on them to meet much of the demand they anticipate.
However, the cold itself posed a direct challenge to the power sources that the state was counting on. Wind turbines iced up. Coal piles froze.
The biggest shortfall in energy production stemmed from natural gas. Gas pipelines were blocked with ice or their compressors lost power. Much of the gas that was available was prioritized for heating homes and businesses rather than generating electricity. That’s helpful for people who use gas for heating but less so for those who use electric furnaces.”
“The Texas blackouts may also be a symptom of a lack of proper upkeep. “The ERCOT grid has collapsed in exactly the same manner as the old Soviet Union,” Ed Hirs, an energy fellow in the department of economics at the University of Houston, told the Houston Chronicle. “It limped along on underinvestment and neglect until it finally broke under predictable circumstances.””
“Most of the shortfall in electric power generation during the current cold snap is the result of natural gas and coal powered plants going offline.”
“Of the 34 gigawatts generation capacity forced offline, Schauer estimates that about 27 gigawatts of coal, nuclear, and gas capacity is unavailable in part because the cold has driven up demand for natural gas for heating. “That’s the bigger problem,” he told Bloomberg News. The pipeline system is not able to deliver enough natural gas to supply both higher demand for home heating and power generation.
In fact, similar state-wide power outages previously occurred in February 2011 when wind and solar power constituted less than 4 percent of Texas’ generation capacity. The Federal Energy Regulatory Commission’s report on the 2011 weather event noted that 193 generating units failed, resulting in rolling power outages that affected 3.2 million customers. Most of the outages in 2011 occurred as a result of frozen sensors and valves and natural gas shortages. The same problems with insufficiently winterized equipment appear to be happening now.
With respect to the current episode, about half of Texas’ wind turbines did freeze up. However, the Electric Reliability Council of Texas, a power grid operator, generally calculates that the turbines will generate only about 19 to 43 percent of their maximum output during the winter months. It is worth noting that winds from the storm were boosting power production from the unfrozen coastal wind turbines and thus offsetting some of the other power generation losses.
Maintaining electric power grid reliability while integrating ever more renewable power supplies is not a simple problem, but that does not seem to be the main issue with the current outages in Texas.”