This story was originally published on Utility Dive. To receive daily news and insights, subscribe to our free daily Utility Dive newsletter. Dominion Energy on Friday proposed raising residential customer bills in South Carolina by about 12.7% to help pay for system upgrades and meet growing demand for electricity. Dominion is also asking regulators for a higher rate of return on equity. The state Public Service Commission is expected to make a decision by July 2, with the changes taking effect the fi ...