Platte River Power Authority recently got the results of a study it commissioned on the relative costs of transitioning to net-zero carbon generation by 2030. The study found that the northern Colorado generation and transmission utility can deliver a net-zero carbon generation portfolio for a cost premium of only 8 percent over the lifetime of the planning horizon (2018–2050).
A story in RMI Outlet, the Rocky Mountain Institute blog, noted that researchers used relatively conservative assumptions for solar and wind costs, and did not consider demand-side efforts in their calculations. This is significant not only because the estimated difference in cost is so small, but also because it indicates the actual cost premium may be even lower than 8 percent.
History of commitment
PRPA and its municipal utility owners—Estes Park, Fort Collins, Longmont and Loveland —have a long-standing commitment to clean energy and efficiency. The G&T contracts for approximately 198 megawatts of carbon-free resources from wind, hydropower and solar assets. In fall 2016, PRPA diversified its power production portfolio further by adding 30 MW of solar power at Rawhide Flats Solar.
A small mountain town with many second-home owners, Estes Park installed two electric vehicle chargers in 2014 and offers its residents energy-efficiency programs and a renewable energy purchase program. Fort Collins, second-place winner of the Georgetown University Energy Prize, has been a global climate leader for nearly 20 years. It was at Fort Collins’ request that PRPA undertook the net-zero study. Longmont City Council recently adopted a goal to use 100 percent carbon-free electricity by 2030 and Loveland, an active contributor to the Rocky Mountain Utility Exchange, provides its customers with an extensive menu of energy-saving programs.
Calculating total cost
Technology company Siemens performed the study that is unique in showing a low cost for net-zero generation that incorporates transmission costs and balancing charges as well as fuel costs. RMI calls it proof that a net-zero path can achieve cost parity against coal even in coal country and that renewables can compete anywhere.
WAPA celebrates PRPA and its members for their initiative and for showing that public power utilities can lead the way to a low-carbon future.
Source: RMI Outlet, 3/8/18