News Release: From the Office of Commissioner Tobin  
  For Immediate Release | 2-27-18      
  Media Contact | Holly Ward      
  Direct | 602-542-3847      
  E-Mail |      
Commissioner Tobin to Attend Big Chino Valley Pumped Hydro Energy Storage Project Informational Sessions in Prescott and Phoenix

PHOENIX — Commissioner Andy Tobin thanks ITC Holdings Corp. for the extensive stakeholder meetings being held in Prescott and Phoenix this month. The Big Chino Valley Pumped Storage Project is a state-of-the-art 2,000 megawatt (MW) pumped hydro energy storage facility planned in Yavapai, Coconino, and Mohave counties that is anticipated to greatly boost our state’s energy security and resilience. Earlier this month, Commissioner Andy Tobin proposed the comprehensive Arizona Energy Modernization Plan which includes a target of 3,000 MW of energy storage operating in the state by 2030.

The Big Chino Valley Pumped Storage Project would bring Arizona’s total energy storage capacity to 2,326 MW, which would be more than 75 percent of the 3,000 MW goal proposed in Commissioner Tobin’s Arizona Energy Modernization Plan. According to the information provided to stakeholders by ITC Holdings Corp., the project would be able to store up to 26,000 acre-feet of closed-system water and deliver 20,000 megawatt hours (MWh) at times when electricity is the most expensive to consumers. This is enough to power 3 million homes for four hours.

“This project will allow our state to better harness the potential of solar resources and put them to use during expensive peak hours,” said Commissioner Tobin. “It will also bring billions of dollars and thousands of jobs to the state while helping us avoid the need to build costly new generation facilities. Overall, these types of projects will be major wins for ratepayers in Arizona.”

Commissioner Tobin will be attending two stakeholder meetings to hear from the public regarding their concerns and questions to the company and looks forward to seeing a collaborative effort to bring more energy storage to Arizona. ITC Holdings Corp. will be holding two stakeholder meetings on:

  February 27, 2018  
  3:00-5:00 p.m.  
  Unisource Energy Services, 6405 N. Wilkinson Dr. Prescott, AZ 86301  
  February 28, 2018  
  3:00-5:00 p.m.  
  HDR Engineering, 3200 E. Camelback Rd. Suite 350 Phoenix, AZ 85018  

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