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By Anjuli Deb -- With deep sadness and profound appreciation, we share the passing of LCG's founder, Dr. Rajat K. Deb. He was our president and one of the first entrepreneurs in the computer revolution. He was also our friend, our teacher and mentor, and for a few of us, our father and grandfather.
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LCG, June 17, 2026--Salt River Project (SRP) and Aypa Power, a Blackstone portfolio company, yesterday announced that Pediment Battery Energy Storage System (BESS), a 250-MW / 1,000-MWh project, is now online and serving customers. Pediment, located in the Elliot Road Technology Corridor in Mesa, Arizona, brings new storage capacity to the rapidly growing Phoenix metropolitan area.
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Industry News
SRP Announces New Pediment Battery Energy Storage System Online in Arizona
LCG, June 17, 2026--Salt River Project (SRP) and Aypa Power, a Blackstone portfolio company, yesterday announced that Pediment Battery Energy Storage System (BESS), a 250-MW / 1,000-MWh project, is now online and serving customers. Pediment, located in the Elliot Road Technology Corridor in Mesa, Arizona, brings new storage capacity to the rapidly growing Phoenix metropolitan area.
SRP expects to more than double its system capacity over the next decade, and expanding safe, cost-effective storage technology will be key to meeting peak demand, maintaining system reliability, and achieving the company's commitment to (i) reducing carbon intensity (from 2005 levels) by 82 percent by 2035 and (ii) achieving net zero carbon emissions by 2050.
Aypa Power acquired the Pediment project from Eolian in 2024, and it is the first of two projects under contract with SRP. In addition to Pediment, Aypa Power is developing another 250 MW / 2,000 MWh lithium-ion battery energy storage system under contract with SRP, which is expected to come online in December 2028. Together, Aypa Power's projects represent 500 MW and 3,000 MWh of energy storage capacity that will support SRP's investments to expand its flexible, dispatchable resources to sustain reliable service.
SRP's Associate General Manager and Chief Power System Executive stated, "The addition of new battery energy storage resources provides SRP with flexibility and capacity that helps us reliably serve our customers. This project is an important addition to SRP's energy portfolio and supports SRP's commitment to providing reliable, affordable and sustainable power as the Valley continues to experience record growth."
Aypa Power's Chief Executive Officer said, "The Pediment project reflects Aypa's disciplined approach to delivering reliable power infrastructure in high-growth markets. Located in one of the nation's leading data center corridors, our local projects are well-positioned to support growing demand from large-load customers, while strengthening overall grid reliability."
The Pediment project is expected to deliver over $16 million in direct economic impact, including $14 million in property tax revenue to Maricopa County during its first 20 years of operation.
To maintain reliability and affordability for customers, SRP has a diverse energy mix that includes nuclear, hydroelectric, natural gas, coal, battery storage and renewable resources like solar, wind, biomass and geothermal. SRP has more than 3,000 MW of carbon-free resources available to serve customers, which include over 1,560 MW of solar and more than 1,570 MW of battery storage supporting its grid.
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UPLAN-NPM
The Locational Marginal Price Model (LMP) Network Power Model
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UPLAN-ACE
Day Ahead and Real Time Market Simulation
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UPLAN-G
The Gas Procurement and Competitive Analysis System
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PLATO
Database of Plants, Loads, Assets, Transmission...
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