Westinghouse is pursuing a transportable microreactor that can be installed on-site in less than 30 days. The 15 megawatt thermal reactor utilizes TRISO fuel and a specialized heat pipe design to flexibly operate on a grid or in remote locations. This short term, two-year project supports a larger effort by Westinghouse to demonstrate a prototype reactor by 2024, with full commercial deployment targeted for the mid-to-late 2020s.
See https://www.energy.gov/ne/articles/5-advanced-reactor-designs-watch-2030