Thermal batteries are the hottest new thing in energy storage tech. As energy storage heats up to be “clean energy’s next trillion-dollar business,” the private sector is throwing its full weight behind developing the technology that will unlock scalable long-term energy storage. As of 2022, the energy storage market was valued at nearly $198.8 billion, on track to reach $329.1 billion by 2032, and showing no sign of slowing from there. The race to corner that market is a contentious one, and thermal batteries are rapidly emerging…