McMaster orders review of stateâs power grid Gov. Henry McMaster has called for a review of the state's power grid to make sure it can withstand the type of ârare winter weather conditionsâ that left millions without power in Texas this week and the threat of rolling blackouts for electric customers from Minnesota to Mississippi. (Source: Live 5/File) By Patrick Phillips | February 19, 2021 at 11:16 AM EST - Updated March 1 at 11:57 PM COLUMBIA, S.C. (WCSC/AP) - Gov. Henry McMaster ordered a review of the stateâs power grid to make sure it can withstand ârare winter weather conditions.â The governor said in a post on Twitter that he asked the stateâs Office of Regulatory Staff to undertake âa comprehensive reviewâ of the stateâs public and private power grid.