The Environmental Protection Agency’s new rules on carbon emissions from power plants will alter the way Americans make and consume electricity, accelerating a dramatic shift to cleaner fuels, renewable energy and consumer choice. Even as the new regulations on greenhouse gases face legal challenges, they will force sweeping changes to the once hidebound electricity business. Utility companies and state regulators will need to rewire the electric grid to accommodate more renewable power, much of it generated by customers. Cutting carbon emissions 32% by 2030 will require billions of dollars in investments to pay for new transmission lines that accommodate more solar and wind power and new pipelines to fuel natural-gas-fired generation, as coal becomes less important as a fuel for power plants. Utilities, which expect to spend more than $100 billion next year on capital projects, will adjust their spending programs to reflect the new rules even as court […]