A megawatt is enough electricity to power about 200 average homes during hot summer weather.
ERCOT is the electric grid operator for much of the state.
Austin set a record July 8 with a high of 106 at Camp Mabry, breaking the record of 105 set in 1939. The high of 105 at Austin Bergstrom International Airport broke the record of 102 set in 1956.