From The Mountain Town News (Allen Best):
Platte River Power Authority seeking to define pathway to 100% non-carbon energy
The Platte River Power Authority plans to cease production of electricity from its 280-megawatt Rawhide power plant north of Fort Collins by 2030, 16 years before its original retirement date.
The utility delivers electricity to Fort Collins and also three other owner communities: Loveland, Longmont, and Estes Park.
The decision to set the retirement resulted from a confluence of several factors. One of them, a new survey of customers this spring in the four towns and cities, once again affirmed broad support for non-carbon energy resources. The survey found 63% of residential customers viewed the non-carbon resources as somewhat or very important.
Platte River also has an 18% interest in two coal-burning units at Craig Generating Station. Unit one is scheduled to end production in 2025 and unit 2 no later than 2030.
The stage for today’s announcement was set in December 2018 when Platte River directors adopted a policy calling for 100% non-carbon energy mix by 2030. The resource diversification policy identified nine advancements that must occur in the “near term” to achieve that 2030 goal. They include active participation by Platte River in an organized regional market; matured battery storage performance and declined costs; and increased investment in transmission and distribution infrastructure.
Platte River is among most Colorado utilities who will be joining energy imbalance markets in the next two years. There is common agreement, however, that deep decarbonization such as planned by Platte River and other Colorado utilities will require participation in a robust regional transmission organization, or RTO, such as operate in other parts of the country.
Xcel Energy in December 2018 gained national attention when it announced its intentions to reduce carbon emissions 80% by 2030 as compared to 2005 levels. It operates in six states and supplies more than 60% of energy consumed in Colorado. Xcel said it planned to achieve emission-free electricity by 2050, but like Platte River, said technology must continue to evolve for it to achieve that goal.
Holy Cross Energy, the co-operative serving Vail and Aspen, has shown innovation that has attracted national attention, but nonetheless has committed only to a 70% carbon-free goal called Seventy70Thirty. It could, however, achieve that in 2021.
Several coal plants in Colorado have already been retired, and many more large units will be retired in the next decade. Only the plants at Hayden and Brush and Comanche 3 at Pueblo are currently scheduled to remain in operation. Xcel is the sole or majority owner of the three plants.
Spread of covid-19 interrupted Platte River’s integrated resource planning process, which had been scheduled to include public meetings. But managers of the utility decided it was best to announce the retirement to support state regulatory timelines. Colorado last year adopted a law that identified a target of 80% emissions reduction from the electrical sector by 2030 and 50% more broadly in the state’s economy.
“Although circumstances associated with the coronavirus prevent us from making this announcement in alignment with our current IRP process, we need to continue moving forward to reach our Resource Diversification Policy’s 100% noncarbon goal,” said Jason Frisbie, chief executive of Platte River.
“Rawhide Unit 1 has served us extremely well for the past 36 years,” said Wade Troxell, Platte River Board chair and Fort Collins mayor, “but the time has come for us to move toward a cleaner future with grid modernization and integration while maintaining our core pillars of providing reliable, financially sustainable and environmentally responsible energy and services.”
Platte River Power projects that 55% of electricity will come from coal this year, supplemented by 19% from hydropower, 17% from wind, 3% from solar. Another 1% comes from natural gas; and 5% comes from purchased power, which could include fossil fuels.
Construction to build Rawhide Unit 1 began in 1979 and commercial operations started in 1984 and has performed with exceptional reliability, capacity and environmental performance. It had been scheduled to retire in 2046.
“Unit 1 has outperformed nearly every other coal plant of its type in the nation and that is a testament not only to its design but also to the people who run it,” noted Frisbie, who began his career at the Rawhide Energy Station and became its plant manager before being promoted to chief operating officer, then general manager and CEO of Platte River.
In addition to Unit 1, the 4,560-acre Rawhide Energy Station also hosts five natural gas combustion turbines and a 30 MW solar farm, along with another 22 MW of solar power (with battery storage) currently under construction. Energy from the 225 MW Roundhouse wind farm located in southern Wyoming will be delivered to the Rawhide Energy Station and then to the owner communities.
Frisbie said plans will be developed to smoothly transition 100 workers to new roles at the other generation resources at Rawhide after the coal-plant closure. Following its retirement, Unit 1 will undergo a lengthy decommissioning process.
Coal for Rawhide comes from the Antelope Mine near Gillette, Wyo.
Allen Best is a Colorado-based journalist who publishes an e-magazine called Big Pivots. Reach him at firstname.lastname@example.org or 303.463.8630.