GE Hitachi Nuclear Energy and the BWRX-300 Joint venture GE Hitachi Nuclear Energy (Hitachi GE in Japan) is developing the BWRX-300, an SMR (small modular reactor) that is based on the BWR (boiling water reactor) design. It hopes to deploy the first of its SMR designs in 2028. GE Hitachi Nuclear Energy and the BWRX-300