JACKSON, Miss. (AP) — A San Francisco-based renewable energy company wants Mississippi regulators to approve a $1.4 billion power transmission line that would carry electricity from wind generated in Texas to the Southeast.

The Southern Cross Transmission line would extend from Texas through Desoto Parish in Louisiana, crossing into Mississippi south of Greenville. It then would run across Mississippi, to a $300 million transmission facility near Columbus, where it would tie into existing power lines.

Pattern Development, an affiliate of Pattern Energy, would begin construction next year and c...