A new report from the Rocky Mountain Institute (RMI) finds that Tri-State Generation and Transmission Association could save its member co-ops over $600 million through 2030, by taking advantage of low cost renewable energy resources and shifting away from its reliance on coal fired power plants. Moreover, the report shows that if Tri-State fails to cut costs and continues to rely on its higher cost coal plants, the generation and transmission association will face increased risks, including losing electricity sales because of defection by its member co-ops, as well as by those co-ops’ members.
The RMI report compares the costs of each of Tri-State’s coal fired power plants – broken down by the costs of fuel, fixed operations and maintenance costs, and variable operations and maintenance costs – to the range of bid prices for new wind and solar energy in Colorado that Xcel Energy received this year in response to it Colorado Energy Plan proposal. Even after adding costs for expanding transmission and other integration costs to bring those new renewable energy resources online, it costs more to keep running Tri-State’s coal plants than it would to add new renewable energy.
The Trump administration's latest proposal to subsidize coal and nuclear power plants is more expansive than earlier efforts, and a key change could impact utilities and ratepayers in the Western United States. That change follows a recommendation by Tri-State Generation and Transmission Association to expand coal plant subsidies to the Western region.
A report published last week by Moody’s Investors Service found that most coal plants owned by municipal utilities and generation and transmission associations are now more expensive than new renewable energy. From Moody’s press release:
Most municipal- or G&T-owned coal plants in the US are old and have high production costs. According to the report, 72.3% of these plants, or about 65.0 gigawatts, have operating costs exceeding $30 per megawatt hour, which Moody's views as the threshold above which coal plants are vulnerable to be displaced by cheaper generation options.
The report provides costs and other details about several coal units, including those owned by Tri-State Generation and Transmission Association - the Escalante coal plant in western New Mexico, all three units at the Craig coal plant in northwest Colorado, and unit 3 of the Springerville coal plant in eastern Arizona. According to Moody’s report, each of those five coal units’ total production costs in 2016 were higher than that $30 per megawatt hour threshold.
Governor-elect Jared Polis says moving Colorado toward more renewable energy will be a top priority
Electric cooperative officials discuss cheap renewable energy and an “eroding monopoly”
Delta Montrose Electric members vote for new financing options, supporting a potential buyout of Tri-State contract
Poudre Valley Electric requests Tri-State policy changes and fuel mix study
Holy Cross Energy plans to shift away from coal, aiming for 70% renewable energy
What do corporate renewable energy commitments mean for electric utilities?
Colorado Energy Plan approval will mean new renewable energy investments in rural Colorado
Report: Tri-State could save $600 million by shifting from coal to renewable energy
Delta Montrose Electric seeks new financing options to end contract with Tri-State
Wind energy jobs in rural Colorado attract bipartisan support
Colorado Energy Plan analysis shows switching from coal to renewable energy will boost jobs and local tax revenue
Poudre Valley Electric and Xcel Energy Colorado President win national awards from Smart Electric Power Alliance
Latest coal plant subsidy proposal could hit electricity bills in the West
Moody’s report: “High quality renewable resources” could help Tri-State and Basin Electric navigate rising carbon transition risks
Senator Heinrich highlights “frustrations in New Mexico” with Tri-State’s limits on local solar
Moody’s report shows Tri-State’s coal plants are more expensive than new renewable energy
Tri-State’s limits on local energy development are a growing problem for co-op members
Governor Hickenlooper discusses Tri-State at the Climate Leadership Conference
Bids for Xcel’s Colorado Energy Plan include a proposal for the world’s largest battery
New wind and solar power in Colorado is now cheaper than existing coal plants
Companies' 100% renewable energy goals are getting results in Colorado
What does cheap solar mean for electric cooperatives?
Colorado towns and cities are helping push utilities to embrace renewable energy
How are electric cooperatives navigating the transition from coal to cheap clean energy?
Blocked from building more solar projects, United Power shifts to community batteries
Economic reality sets in for Tri-State efforts to expand the Holcomb coal plant
Solar projects in the works in Grand and Jackson counties
Mountain Parks Electric grapples with solar