The optical-power emission-type SunCell® was operated under conditions permissive of molecular hydrino absorption in nickel foil and metallic tin. Raman anti-Stokes and Stokes spectra confirmed the prior spectral assignments of emission lines of higher energy than even observed. The peaks identically match fluxon linkage by molecular hydrino during rotational transitions. 325 nm Raman was repeated on the SunCell®-derived samples, and characteristic high-energy molecular hydrino rotational transition emission peaks were observed. The results demonstrate that the reaction of H2 to H2(1/4) is the source of SunCell® power gain.