Oncor is into economic development – who knew? Wed, 01/08/2020 - 12:00am While electricity is Oncor’s No. 1 business, it is also involved in economic development in the 98 Texas counties it ...PLEASE LOG IN FOR PREMIUM CONTENT. Our website requires visitors to log in to view the best local news. Not yet a subscriber? Subscribe today! Read more about Oncor is into economic development – who knew?