Nuclear energy startup X-energy has filed for an initial public offering seeking to raise up to $800 million, according to regulatory filings. The company, which has backing from Amazon, began marketing efforts to potential investors for the public offering.

X-energy specializes in developing small modular reactor technology and TRISO fuel for nuclear power generation. The company's technology focuses on creating safer and more efficient nuclear energy solutions compared to traditional large-scale nuclear plants.

The IPO filing comes as nuclear energy companies have attracted increased investor interest amid growing demand for clean energy alternatives. Small modular reactors in particular have gained attention as a potential solution for providing reliable baseload power while reducing carbon emissions.

Amazon's involvement as a backer highlights the tech giant's continued investment in clean energy infrastructure to support its climate commitments and growing energy needs for data centers and cloud computing operations.

The timing and final terms of the offering have not been disclosed. Market conditions and investor reception will likely influence the company's ability to achieve its $800 million fundraising target.