POET and Antora Energy commission a 5 gigawatt-hour (5GWh) thermal energy storage system at POET’s Big Stone City bioprocessing facility in South Dakota, according to multiple outlets. The project uses Antora’s thermal storage technology to store energy and deliver it to support operations at the biofuels plant, where POET produces bioethanol. Both sources describe the system as a large-scale thermal energy storage installation designed to integrate with the facility’s energy needs. The commissioning indicates the system is now delivering power to the site. The coverage focuses on the size of the storage capacity and the location at POET’s Big Stone City facility, presenting the deployment as an upgrade intended to enhance the plant’s bioethanol production by improving how energy is supplied and managed during processing. No additional technical specifications, performance metrics, or commissioning timelines beyond the start of delivery are provided in the excerpts.