Santee Cooper: A Powerhouse For Growth In South Carolina Santee Cooper, South Carolina’s largest power provider, is a major driver of regional economic development, helping to create a favorable business climate that fuels growth. BF Staff 10:55 am Recover your password A Powerhouse For Growth In South Carolina Santee Cooper, South Carolina’s largest power provider, is a major driver of regional economic development, helping to create a favorable business climate that fuels growth. May 11, 2021 By the BF Staff From the March/April 2021 Issue Santee Cooper is South Carolina’s state-owned electric and water utility, and the state’s largest power provider. The utility has been a strong force in the growth and development of the state. Its mission is to be the leading resource for improving the quality of life for all South Carolinians.