LAS VEGAS (AP) — Two planned solar arrays in Clark County will be the first in the state to include batteries to enable power delivery after the sun goes down.

The Las Vegas Review-Journal reports construction on the projects located near Pahrump and Las Vegas is expected to begin next year.

The proposed Yellow Pine Solar Project, near Pahrump, would combine photovoltaic panels and lithium-ion batteries to generate up to 500 megawatts of electricity for use in Nevada on public land near the California border.

The Gemini Solar Project, near Las Vegas, would eventually generate up to 690 megawatts with some battery storage on public land just east of Interstate 15 along the road to Valley of Fire State Park.

Industry experts expect to see more developments like these as battery costs decline and the technology continues to improve.