NRG Energy Inc. will decommission and permanently retire units 1 and 2 at the Sam Bertron gas-fired facility in Harris County, Texas, as of Jan. 23.

The Electric Reliability Council Of Texas on Dec. 28, 2018, received a notice of change of generation resource designation on the currently mothballed units. Each unit has a nameplate capacity of 187.8 MW. ST2 came online in April 1956, while ST1 came online in March 1958.

The company already retired units 3 and 4, which came online in 1959 and 1960, respectively, according to S&P Global Market Intelligence data.