The company behind the Texas Clean Energy Project (TCEP) filed for bankruptcy protection in October 2017, ending any hope that it would build its proposed million-ton-per-year "clean coal" urea plant.
This means that every one of the "clean coal" ammonia synthesis projects I've been tracking since 2012 has failed: in California, in Mississippi, and now in Texas. That's three strikes; if hydrogen sources were like baseball, coal would be out.
These projects all shared jaw-dropping cost escalations and multi-year delays that forced financing partners to withdraw.