Gutierrez said the estimates could be revised again as NRG has received resettlement data for 80% of its commercial and industrial load, compared with 99% for residential consumers. There remains “significant uncertainty” as Texas lawmakers and regulators consider repricing or other measures to mitigate the impact of the crisis, he said. “Details matter here,” Gutierrez said. The historic outage killed 57 people and caused as much as $129 billion in economic losses. The impact on individual companies is only starting to emerge. More than 4 million homes and businesses were left without power, heat or water for days. Vistra Corp. said last month that the blackouts would cost it $900 million to $1.3 billion, days after Exelon Corp. said it expected that its first-quarter net income would be reduced by $560 million to $710 million because of the outages.