Two units at the massive solar power plant near Primm, Nevada will shut down in the coming years as a deal with a California utility winds down.NRG Energy and P

The landmark Ivanpah solar energy plant along Interstate 15 near the Nevada-California border is past its prime, left in the desert dust as more efficient technology is producing power cheaper these days.

The solar power generating facility that can be seen from Interstate 15, just across the state line from Primm, is set to partially shut down, according to NRG Energy. The Ivanpah Solar Electric Generating Facility is shutting down two-thirds of its plant after Pacific Gas and Electric Company terminated its power purchase agreement with NRG Energy,