THINGS ARE HEATING UP

NERC warns of summer energy shortfalls–what you can do now

Rising temps could result in rolling brownouts this summer–unless we work together to reduce the strain on the electric grid. Photo via Shutterstock

The North American Electric Reliability Council (NERC) issued a warning with the 2023 Summer Reliability Assessment yesterday – energy shortages could be coming this summer for two-thirds of North America if temperatures spike higher than normal.

“Increased, rapid deployment of wind, solar and batteries have made a positive impact,” Mark Olson, NERC’s manager of reliability assessments says in the release. “However, generator retirements continue to increase the risks associated with extreme summer temperatures, which factors into potential supply shortages in the western two-thirds of North America if summer temperatures spike.”

For Texans, the combined risk of drought and higher-than-normal temperatures could stress ERCOT system resources, especially in the case of reduced wind. But before there’s a mad rush on generators, keep in mind, electricity consumers can take simple actions to minimize the possibility of widespread shortfalls.

Electricity demand begins rising daily around 2 P.M. in the summer and peaks in the final hours of daylight. These hours are generally not only the warmest hours of the day but also the busiest. People return from work to their homes, crank down the air conditioner, turn on TVs, run a load of wash, and prepare meals using multiple electric-powered appliances.

If everyone takes one or two small steps to avoid unnecessary stress on the grid in the hours after coming home from work, we can prevent energy shortfalls. Modify routines now to get into the habit of running the dishwasher overnight, using the washer and dryer before noon or after 8 pm and pulling the shades down in the bright afternoon hours of the day.

Try to delay powering up devices – including EVs – until after dark. Turn off and unplug items to avoid sapping electricity when items are not in use. And if you can bear it, nudge that thermostat up a couple of degrees.

Energy sustainability demands consistent collaboration and coordination from every consumer of energy. Let’s get in the habit of acting neighborly now with conservative electricity practices before we start seeing temperatures–of both the literal and figurative kind–flare.

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A View From HETI

Simon M. King, a Rice University sophomore, served as the first author on a recent study of a new process for recycling lithium-ion batteries. Photo courtesy Rice

Rice University researchers have uncovered a more energy-efficient and faster way to recycle critical minerals from used lithium-ion batteries.

Traditional methods rely on high heat, long processing times and harsh chemicals to recover a small fraction of critical materials from batteries used in everything from smartphones to electric vehicles. However, the team from Rice's Department of Materials Science and Nanoengineering developed a process that uses a water-based solution containing amino chlorides to extract more metals in less time

The team published the findings in a recent edition of the scientific journal Small.

Simon King, a sophomore studying chemical and biomolecular engineering who completed this work as a summer research fellow at the Rice Advanced Materials Institute, served as first author of the study. He worked with corresponding authors Pulickel Ajayan, the Benjamin M. and Mary Greenwood Anderson Professor of Engineering, and Sohini Bhattacharyya, a research scientist in Ajayan’s lab.

By using a hydroxylammonium chloride (HACI) solution, the team achieved roughly 65 percent extraction of key battery metals in just one minute at room temperature, according to the study. The efficiencies grew to roughly 75 percent for several metals under longer processing times.

“We were surprised by just how fast the reaction occurs, especially without the involvement of high temperatures,” King said in a news release. “Within the first minute, we’re already seeing the majority of the metal extraction take place.”

By not requiring high temperatures or long reaction times, Rice predicts the process could have a major impact on cost and the environmental impact of lithium battery recycling. Additionally, the water-based HACI solution makes waste handling easier and lowers certain environmental risks.

In addition to extracting the materials, the team went on to demonstrate that the recovered metals could be recycled and reprocessed into new battery materials.

“A big advantage of this system is that it works under relatively mild conditions,” Ajayan added in the release. “That opens the door to more sustainable and scalable recycling technologies.”

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