With the North Rosamond Solar Facility coming online last month in California, Duke Energy has passed the 1-gigawatt (GW) threshold of utility-scale owned and operated solar facilities nationwide. Throughout the decade, Duke Energy has been building a solar portfolio that now includes almost 70 sites in 10 states, with a total capacity of 1.1 GW. At peak output, that could serve energy to approximately 2 million homes.