TY JOUR TI Methods for assessing the economic security of an electric power organization during the investment process KW economic security KW investment efficiency KW real options method KW threats to the electric power industry KW prevented damage JO Bulletin of scientific research results AU Romanova, R.G. AU Sacuk, T.P. PY 2024 IS 2024 PB FSBEI HE "Emperor Alexander I St. Petersburg State Transport University"