This document summarizes a solution target radioisotope generator technology for producing the medical isotope molybdenum-99 (Mo-99). The technology uses a subcritical system with uranium salts dissolved in heavy water as the target, and a photon source driven by an electron beam accelerator. When photons interact with the deuterons in heavy water, photoneutrons are produced causing fission in the uranium salts. This generates Mo-99 which can then be extracted. Prototypes have confirmed photoneutron production in heavy water and the technology aims to provide a domestic alternative for producing Mo-99 with less regulatory hurdles and waste compared to existing reactors.