E.ON and Tucson Electric Power Sign Iron Horse Battery Energy Storage Agreement

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E.ON Climate & Renewables North America, LLC (E.ON) has signed an agreement with Tucson Electric Power (TEP) to provide frequency response and voltage control from a grid-scale, 10-MW battery energy storage facility with a 2-MW solar array. 

The Iron Horse Battery Energy Storage Project will be located adjacent to the University of Arizona Science and Technology Park southeast of Tucson. 

"E.ON, as a provider of global energy solutions, is proud of our ability to work with a utility like TEP to provide innovative grid reliability solutions benefiting their customers," said Steve Trenholm, President of E.ON Solar. 

In addition to supplementing TEP's grid management, E.ON also provides energy to TEP from its 6.6-MW Tech Park Solar and 13.2-MW Valencia Solar facilities. It also partnered on the turnkey construction of TEP's 17.2-MW solar facility at the Fort Huachuca Army Base near Sierra Vista, Arizona.

"We are excited to put E.ON's own utility storage expertise to use for TEP," said Mark Frigo, VP of Energy Storage North America for E.ON.  "TEP is the perfect partner for this project as they are an experienced utility operator and very interested in integrating innovative, cost-effective technologies for the benefit of their customers."

In partnership with Greensmith Energy, E.ON 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.  The project will enhance TEP's contribution to grid stability by providing ancillary services during the 10-year contract period.  

"The system will be capable of responding faster than conventional generation to adjust to rapid changes in power demand," said Frigo.  "Our team engineered the right set of technologies to fulfill the customer's vision of what they need to manage their system efficiently and effectively."

The project is expected to be complete in the first half of 2017.

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