We are a not-for-profit cooperative power supplier and our mission is to provide our member systems a reliable, affordable and responsible supply of electricity in accordance with cooperative principles.
We are a cooperative of 46 members, including 43 electric distribution cooperatives and public power districts in four states that together power to more than a million electricity consumers across nearly 200,000 square miles of the West.
What makes us unique among utilities is that cooperatives like Tri-State are member-owned and governed, and operate on a not-for-profit basis. Our governing decisions are based on sound financial principles, utility industry best practices and, most importantly, the needs of our members. Learn more.
By working together, our members share in the benefits from a growing supply of emissions-free renewable energy, including hydropower, wind and solar, and from a highly dependable and cost-effective fleet of coal and natural gas power plants. We own generation facilities, contract for long-term power purchases and buy power from the market to meet our members’ energy and capacity needs. Our members can also self-supply a portion of their needs from local resources.
It’s a big job to deliver reliable power to communities across nearly 200,000 square miles of the west, from the eastern plains through the Rocky Mountains and down to the southern deserts. We own or operate more than 5,665 miles of high-voltage lines, supported by our system of substations and telecommunications sites. Our transmission maintenance centers work to keep the lights on.
Technology is changing at a rapid pace, and we are part of that advancement through our partnerships with leading organizations like the Electric Power Research Institute and the National Rural Electric Cooperative Association. An important part of our efforts is to directly participate in research projects, which helps solve unique challenges, brings us early information on advanced technologies, accelerates the commercialization of new products and provides information exchanges within our industry.
In an increasingly complex and competitive energy market, it’s important for our members that we schedule and dispatch resources and buy and sell power in the most optimized and efficient manner possible. Every minute of every day, we determine the optimal mix of more than 30 generation resources to serve our members, and we look far ahead to ensure our members will have the reliable, low-cost energy they need for the future.
5,665 Miles of Line
1.3 Million Consumers