Tri-State had been under scrutiny for its reliance on coal-fired power. Now the utility is making moves to up renewables.
Businesses nationwide responded to the preferences of customers and investors alike by spending more on renewable energy.
Colorado has a long way to go in pursuit of 100 percent green energy. An important key to a future with renewables though will be storage.
Polis declared the state of the state as solid, strong and successful before he tacked on one of the watchwords of his campaign: “bold.”
Just a few years ago, 100 percent renewable energy goals were pie-in-the-sky academic thought experiments.
The lithium ion battery will provide power on days when wind and solar don't produce enough.
The president of Xcel's Colorado operations answered questions about the road to come.
Ecotech Institute is one of dozens of colleges closing nationwide. Its parent company Education Corporation of America is one of the nation's largest for-profit college chains.
The rural electricity provider in Colorado coal country is parting ways because Tri State is too closely tied to fossil fuels.