The report deals with the results of developing the 450-MeV electron storage ring SIBERIA-1, i.e. the first phase of the specialized synchrotron radiation source of the I.V. Kurchatov Institute of Atomic Energy. The storage ring was designed, manufactured and put into operation by the staff of the Institute of Nuclear Physics of the Siberian Department of the USSR Academy of Sciences in 1983. In 1984 a superconducting “snake” with a 4.3 T field was mounted in the storage ring. In 1984–1985, as part of the process of developing the storage ring a modification of the synchronization system of the linac FAKEL and of the injection system to the storage ring were performed. The beam diagnostics system was developed. The vacuum system of the storage ring and injection channel was up-dated. Regimes for the joint operation of the storage ring and the linac FAKEL were developed at various adjustments of the latter. A current of 180 mA was obtained at the injection energy of 55 MeV and one of 160 mA at 450 MeV. The beam lifetime has so far been limited by scattering on the residual gas in the storage ring chamber and amounts to 3.6 × 10 3 s at 100 mA current and to 1.4 × 10 4 s at 1 mA current. Presently, operations are being carried out at the experimental station of the luminescent VUV-spectroscopy of channel M and at the VUV-spectrometer for the investigation of wide-band dielectrics, including cryocrystals, at channel S.