Annual Report and Form 10-K

The report describes Duke Energy’s 2015 shift toward regulated utilities, natural-gas infrastructure and renewables, including the sale of its nonregulated Midwest generation business. It highlights the commercial renewables business adding 400 megawatts of wind and 200 megawatts of solar power. The company also reports that U.S. electricity-generation CO2 emissions had declined by more than 25 percent since 2005, alongside work to close coal ash basins.