...OGE Energy Corp.'s ratings and Outlook are supported primarily by its regulated utility Oklahoma Gas & Electric Company. OG&E's last two rate orders allowed cost recovery of $1.1 billion environmental capital investments, and it recently reached a unanimous settlement on the grid- enhancement rider. OGE's consolidated credit profile remains consistent with its ratings. However, its investment in the Enable Midstream Partners, LP (BBB¡/Negative) is facing negative pressure due to commodity price volatilities and weak demand....