Record heat waves are sweeping through the country this summer… putting those A-C units to the test and keeping utility companies on their toes. Founded in 19-04, Duke Energy is one of the nation’s largest utility companies. It provides electric and natural gas power to more than nine-million customers across the Southeast and Midwest. And with revenues topping 24-billion – Duke is one of the top utility companies on the Fortune 500 – landing at number one-twenty-six.