UniSource will issue an all-source request for proposals for additional energy resources

TUCSON, Ariz.–(BUSINESS WIRE)–UniSource Energy Services will seek new wind and solar generation, energy storage systems and other resources such as energy efficiency with an all-source request for proposals (ASRFP) that it plans to release on Tuesday. April 19. The deadline for proposals is expected to be July 1, 2022.

ASRFP will target resources to support UniSource’s 2020 Integrated Resource Plan (IRP), which calls for increased utilization of owned or contracted generation resources and reduced reliance on wholesale market power purchases . The IRP also outlines UniSource’s plan to supply 50% of its energy to retail customers from renewable resources by 2035, taking advantage of cost reductions and reliability improvements in wind, solar and energy technologies. of storage.

“We are looking for cost-effective resources that can help us maintain reliable service for our customers while building a cleaner energy grid with fewer emissions,” said Susan Gray, President and CEO of UniSource. “We are particularly interested in resources that are consistently available in the late afternoon and early evening in summer, when customers’ energy needs are greatest.”

In its application, UniSource will solicit bids for all resource types, including:

  • Up to 170 megawatts (MW) of renewable resources and energy efficiency. This could include new wind and solar power generation systems and new energy efficiency initiatives, including demand response programs that reduce usage during periods of high energy demand.

  • Up to 150MW of “firm capacity” resources that can be called up at any time, including energy storage systems designed to provide at least four hours of continuous energy each day during the summer for UniSource can distribute them as needed. It could also include demand response programs that offer incentives to customers who reduce their energy consumption at specific times of the day and year when consumption is typically highest.

UniSource will review proposals this summer and announce successful proposals later this year. UniSource is looking for resources that will go live as early as May 1, 2024 but no later than May 1, 2025. Projects with combined technologies are eligible.

The ASRFP process is supported by 1898 & Co., with independent monitoring services provided by Sargent & Lundy. More information, including bidder registration and ASRFP materials, is available at https://unse2022asrfp.rfpmanager.biz/.

The energy needs of UniSource customers are increasing, with new peak energy demand records set in 2020 and 2021. UniSource is working to meet these needs with an increasingly cleaner mix of energy resources. UniSource’s 2020 IRP outlines the company’s plans to procure a strong mix of renewable resources, efficient natural gas production and new customer opportunities for energy efficiency and managing peak energy demands.

In February 2022, the Arizona Corporation Commission reviewed and recognized UniSource’s 2020 IRP, noting its use of ASRFPs to secure future resources and providing guidance on developing future resource plans.

UniSource provides natural gas service to more than 165,000 customers in northern and southern Arizona. It also provides electrical service to more than 100,000 customers in Mohave and Santa Cruz counties. For more information about UniSource, visit www.uesaz.com. UniSource and its parent company, UNS Energy, are subsidiaries of Fortis Inc. (TSX/NYSE: FTS), which owns utilities that serve more than 3 million customers in Canada, the United States and the Caribbean. For more information, visit fortisinc.com.