By Michael Irving
May 27, 2024
https://newatlas.com/energy/heat-batter ... y-storage/
A new heat-to-energy converter has reached a record efficiency of 44% – the average steam turbine manages about 35%, for comparison. This thermophotovoltaic cell is a major step on the way to sustainable, grid-scale renewable energy storage.
With renewable energy prices dropping fast, the barrier now is their intermittency – the first point any renewable energy skeptic will throw at you is “but what happens at night or when the wind isn’t blowing?” A little thing called “batteries” can help there, and there’s no shortage of grid-scale storage systems that can save energy for (literally) rainy days. That includes scaling up classics like lithium-ion batteries, or more experimental designs like iron-air, water-in-salt, flow batteries, or a variety of gravity-based systems.