Aalo Atomics’ Aalo-X Critical Test Reactor (CTR)—dubbed “Project First Light”—has reached criticality at Idaho National Laboratory (INL), marking the fourth Department of Energy (DOE)–authorized advanced reactor startup under the federal push to accelerate reactor testing and demonstration. The U.S. Department of Energy (DOE) said July 6 that Aalo’s test reactor, which DOE referred to as Aalo-X, “...