The lithium ion battery will provide power on days when wind and solar don't produce enough.
The rural electricity provider in Colorado coal country is parting ways because Tri State is too closely tied to fossil fuels.
Colorado Oil and Gas Conservation Commission is considering a 1,000-foot drilling setback from school property, including outdoor spaces like sports fields.
The utility’s new goal is good news for Gov.-elect Jared Polis, who pledged a 100 percent renewable energy goal as part of his campaign.
County officials had been concerned that there would have been an influx of permits if the ballot measure had passed.
Election Day Marks the latest chapter in a long, bitter and expensive debate that could have a ripple effect in other energy rich states.
“The county is committed to fairness in its regulation of oil and gas development,” Board Chair Mary Hodge said.
If it passes, Proposition 112 would require any new oil and gas development not on federal land to be set back about a half-mile from homes and "vulnerable areas.”
Proposition 112 would require that new oil and gas wells be at least 2,500 feet from occupied buildings and would allow local governments to enact even greater setbacks.
Justices heard oral arguments in the high-stakes case but did not say when they would rule.