About

About Oncor As the largest energy delivery company in Texas, Oncor has a long tradition of serving the people of the Lone Star State. From our founding in 1912 to our role as a 21st century energy innovator, our commitment to make life better for everyone has remained constant. The people who make up Oncor are advocates for reliable energy and great service. As the largest energy delivery company in Texas, Oncor has a long tradition of serving the people of the Lone Star State. From our founding in 1912 to our role as a 21st century energy innovator, our commitment to make life better for everyone has remained constant. The people who make up Oncor are advocates for reliable energy and great service.