In November 2017, Terrestrial Energy completed the first engineering program for the IMSR® design and the first step of the Canadian regulatory phase — Phase I of CNSC’s Vendor Design Review. This is a first for an advanced reactor. In addition, IMSR® power plant site selection work is underway in Canada and the United States.
I don't know how serious a bid this is (i.e. how well funded they are).
EDIT: it seems they had $22.5 million (Canadian) in funding by 2016. In 2018, the DOE gave them a "financial award to support the company’s pre-application activities with the U.S. Nuclear Regulatory Commission (NRC)."
https://www.cantechletter.com/2016/09/t ... -un-forum/
https://www.globenewswire.com/news-rele ... nsing.html