The case was closely watched as a precedent for future rate cases in Arizona.
Federal regulators have approved the technology company’s application to become an IPP.
The Spanish company was awarded the project by the Navajo Tribal Utility Authority for a 37.6 MW plant in Arizona, which will be the company’s second utility-scale solar plant in the United States.
Tucson Electric Power (TEP) has contracted E.ON and Greensmith Energy to provide frequency response and voltage control from the 10 MW Iron Horse Battery Energy Storage Project, using lithium titanate oxide (LTO) batteries supplied by Landis+Gyr.
An administrative law judge has said that UNSE should keep net metering until a further hearing, and should not impose discriminatory rates. This opinion is pending a final decision by Arizona regulators.
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