SunZia Southwest Transmission Project plans to build high voltage power lines to carry wind and solar power in the Southwest.

The lines would operate in both directions from central New Mexico to the area near Casa Grande with substations along the way.

A proposed route would take those power lines east and north of the Santa Catalina Mountains.

But the project has hit a hang-up, because it's possible that the high volume of electricity may cause interference with electronics at New Mexico’s White Sands Missile Range.

U.S. Sen. Martin Heinrich, D-NM., is proposing a study to determine the effects of the power lines on the military site.

SunZia sees this as a double-edged sword, it is progress but it could also be further delay.

“A project, at some point, needs a level of certainty, and after 5 years, one would hope that there would be certainty,” said Ian Calkins, SunZia spokesman. “We believe there is, we believe we’re nearing the end of the federal permitting process. We can see the light at the end of the tunnel.”

The project would cost SunZia $1.2 billion, and create an estimated 42,000 construction and maintenance jobs between the two states.