MISO issued a slew of warning notices and operating instructions — especially in the South region — to help deal with oppressive July heat, forced generation outages and strained transmission.

MISO Midwest entered emergency status during the RTO’s first serious heat wave of the summer.

MISO set its 122-GW summertime peak on the unofficial last week of summer, with widespread heat necessitating back-to-back maximum generation warnings.

MISO instated maximum generation procedures Thursday to manage a pervasive heat wave blanketing its footprint.

MISO’s December emergency declaration ignited a debate over whether the RTO should enter emergency procedures to sustain its neighbors during extreme weather.

MISO flirted with its first maximum generation event of the year, a month after it cautioned members that winter operations would get risky.