Tucson Electric Power Inks Iron Horse Storage Deal

The project, linked to a 2 MW solar array, is located at the University of Arizona Science and Technology Park southeast of Tucson, and is expected to be completed during the first quarter of 2017.

Prime developer E.ON Climate & Renewables North America, based in Chicago, in partnership with Greensmith Energy, based in Emeryville, CA., will design and integrate a customized energy storage solution for TEP that is capable of providing the benefits of a conventional generation system’s availability and response capabilities.

Landis+Gyr will utilize Toshiba SCiB lithium titanate oxide batteries and its Energy and Capacity Optimization System (ECOS), which combines communication, control and data management technologies into a flexible solution to monitor and manage the distribution network and enable optimal utilization of existing and new distributed energy resources.

This project will enhance TEP’s contribution to grid stability by providing ancillary services during the 10-year contract period. TEP is adding a total of 20 MW of energy storage capacity through this and another project that will help balance load and regulate frequency on its distribution system, while also deferring capital investments in spinning reserves.

The second storage project is a 10-MW lithium nickel-manganese-cobalt (NMC) facility at a TEP substation that will be built by NextEra Energy Resources, based in Juno Beach, Fla., and is expected to be in operation late this year.

The two storage projects were approved by the Arizona Corporation Commission (ACC) to improve service reliability and study how such systems can support the expansion of solar power resources and other renewable energy technologies. The utility has a goal of generating 30 percent of its power from renewable resources by 2030, which amounts to about 1,200 MW.