During and after the rolling outages, ice accumulated across the City which caused downed lines and broken insulators on poles, resulting in localized outages separate from outages mandated by ERCOT. There were also broken tree limbs and downed trees which had to be cleared. As crews worked to restore power, customers’ lights, heaters, and water heaters were all coming on at the same time causing fuses to overload. SMEU had to replace these fuses on all circuits, in some cases more than once. SMEU crews were addressing known problems during the rolling outages to avoid prolonged service interruptions, but some problems were not known until after the rolling outages stopped and customers reported they were still without power.