Dominion Virginia Power customers are concerned that their power bills could increase in the next ten years. The U.S. Environmental Protection Agency has proposed rules cutting carbon emissions from existing power plants in an effort to provide affordable energy. The No. 1 question the nearly 600,000 member-customers of the state’s 13 electric cooperatives have? Is the cost impact for complying with the proposal. Some experts say customers could see their electricity bills go up as much as 30 percent by 2025. But the EPA says the proposal is a clean energy job creation bill likely generating 62,500 jobs in the Commonwealth.