Nuclear startup X-energy began its investor roadshow Wednesday as it works toward its IPO, setting its target price between $16 and $19 per share, according to documents filed with the U.S. Securities and Exchange Commission. If it lists at the high end, the startup could net about $814 million. X-energy and its peers have been riding a renewed wave of interest in fission power as demand for electricity has surged on the back of AI data centers and societywide electrification.  Amazon is one of X-energy’s biggest backers. The tech giant led a $500 million Series C-1 round and has pledged to buy as much as 5 gigawatts of nuclear power from the company by 2039. The IPO is sure to come as a relief to X-energy’s investors, which have put about $1.8 billion into the company, according to PitchBook. The startup had previously attempted to go public via reverse merger with a special purpose acquisition company, but the two parties canceled the deal in 2023 as the SPAC craze petered out.…