By David Wichner | Arizona Daily Star
Last week, the University of Arizona and Tucson Electric Power Co. marked completion of a new energy-storage system and solar array built by E.On North America at The Solar Zone at the UA Tech Park.
But it was more of a new beginning than an end for the 223-acre Solar Zone, which the UA rightly touts as one of the largest multi-technology renewable-energy demonstration sites in the world.
E.On’s Iron Horse Energy Storage and Solar Project is actually the first project for phase two of The Solar Zone on the northwest side of the UA Tech Park.
Iron Horse, which consists of a 10-megawatt capacity lithium-ion battery-storage facility and an accompanying 2-megawatt photovoltaic array, is also the first North American energy storage project for E.On, which is part of a German-based company that is one of Europe’s biggest electric utilities.