Energy storage

A new report by researchers from MIT’s Energy Initiative (MITEI) underscores the feasibility of using energy storage systems to almost completely eliminate the need for fossil fuels to operate regional power grids, reports David Abel for The Boston Globe. “Our study finds that energy storage can help [renewable energy]-dominated electricity systems balance electricity supply and demand while maintaining reliability in a cost-effective manner,” says Prof. Robert Armstrong, director of MITEI.

Researchers at MIT have built a highly efficient thermophotovoltaic cell that converts incoming photons to electricity, reports Kevin Hurler for Gizmodo. “We developed this technology—thermal batteries—because storing energy as heat rather than storing it electrochemically is 10 to 100 times cheaper," explains Prof. Asegun Henry. 

A team of researchers from MIT and the National Renewable Energy Laboratory successfully reached a 30% jump in thermophotovoltaic (TPV) efficiency, reports Robert F. Service for Science. “[TPV] is a semiconductor structure that concerts photons emitted from a heat source to electricity, just as a solar cell transforms sunlight into power,” explains Service.

Boston Globe reporter Hiawatha Bray spotlights how a number of MIT spinoffs are working on changing the world’s energy-storage systems. “Behind these companies are key technological advances in chemistry and materials, many of them pioneered at the Massachusetts Institute of Technology,” writes Bray. “These breakthroughs have put battery startups at the forefront of the region’s climate-tech sector.”

Senior research engineer Howard Herzog speaks with Bloomberg about the challenges facing the carbon capture industry and how we can get to net-zero emissions.

Washington Post columnist David Von Drehle spotlights MIT startup Form Energy, which has created a battery prototype made of iron and oxygen that stores large amounts of power and can release it over days. Von Drehle writes that this new battery could usher in a “sort of tipping point for green energy: reliable power from renewable sources at less than $20 per kilowatt-hour.”

MIT researchers have analyzed the role of long-duration energy storage technologies and found that large storage systems have the potential to lower electricity prices in a carbon-free grid by up to 40%, writes Eric Roston for Bloomberg. 

“What we need to do, especially as we move more towards intermittent energy that we can’t predict as well as the output of thermal power plants is to keep adding to that resiliency,” says Robert Stoner, deputy director of the MIT Energy Initiative. Stoner discussed the recent failures of Texas’ power grid and what New England can learn from these events on WBUR’s Radio Boston.

Popular Mechanics reporter Kyro Mitchell spotlights how MIT researchers have created a new material, inspired by camel fur, that could be used to help insulate food and medical supplies. “Field tests on the new material show that it can provide cooling of more than seven degrees Celsius,” writes Mitchell. “It can also maintain that low temperature for five times longer than using hydrogel alone.”

Smithsonian reporter Corryn Wetzel spotlights how MIT researchers have developed a new technology inspired by camel fur that could be used to keep food and medical supplies chilled. The researchers hope the new system could be applied to “lots of areas that require passive cooling—meaning no external energy needs to power the process. Possible applications include insulating food storage, medical supplies and buildings.”

MIT researchers have created a new material that mimics camel fur and could be used to help keep food and medical supplies cool without electricity, reports Layal Liverpool for New Scientist. “We achieve evaporation and insulation at the same time, extending the cooling period significantly,” explains Prof. Jeffrey Grossman.

XiaoZhi Lim at The New York Times reports on a new study co-authored by researchers at MIT, which found that “by using a new class of electrolytes composed of ionic liquids, or salts that remain liquid at room temperature,” it may be possible for a supercapacitor to store as much energy as a lithium-ion battery.

Prof. Donald Sadoway explains the benefits of battery storage in an Associated Press article about energy storage in Arizona. “Absent battery storage, the whole value proposition of intermittent renewable energy makes no sense at all…People just don’t understand that the battery will do for electricity what refrigeration did to our food supply.”

Prof. Donald Sadoway speaks with CBC News reporter Paul Hunter about his work developing a rechargeable battery that is big enough to power an entire neighborhood, and uses liquid metals and molten salt. Hunter writes that “Sadoway's invention is radically different from anything else in the market.”

Popular Mechanics reporter David Grossman writes that MIT researchers have developed a conceptual design for storing renewable energy for the grid in tanks of white-hot molten silicon. The researchers estimate that their system, “would cost around half as much as the current cheapest form of renewable energy ready to scale out to an entire grid.”