Tuco-Yoakum-Hobbs Transmission Line Project, US February 10, 2015 | North America Project Update The project is part of the USD1.6 billion 'Power for the Plains' initiative of SPS. Under the project, a 159-mile (256-km), 345 kV line will be constructed in Texas. This content is available to only paying subscribers. Username or E-mail Password Remember Me Forgot Password