COLUMBIA, South Carolina, June 25 (TNSPol) -- The Sierra Club issued the following news release: The South Carolina Public Service Commission has (PSC) approved Dominion Energy's modified 2020 long-term energy plan, which will accelerate coal plant retirements in South Carolina. In December 2020, the PSC unanimously rejected the Dominion's 2020 filing and later ordered the utility to specifically study coal retirements in its modified 2020 plan. The modified plan, called an integrated resource  more