Blackstone-owned Aypa Power acquires 268MW BESS projects in Indiana MISO territory

March 3, 2023
LinkedIn
Twitter
Reddit
Facebook
Email

Developer Aypa Power has bought two “late-stage development” battery storage projects in Indiana, US, from Blue Steel Power.

Aypa Power develops utility-scale energy storage and hybrid renewables-plus-storage projects to own and operate. It said earlier this week (1 March) that it has acquired the Williams Power 150MW battery energy storage system (BESS) project in Indiana’s Jefferson County, and Fletcher Power, a 118MW project in Decatur County. Energy capacity figures in megawatt-hours (MWh) were not provided in an announcement.

Both will be connected to the Midcontinent Independent System Operator (MISO) grid and deliver grid-balancing services as well as capacity. Transmission organisation MISO opened its market resource mix up to electricity storage in September last year.

The company is in the portfolio of private equity firm Blackstone. The developer recently secured a US$320 million credit facility to advance a claimed 15GW+ pipeline of projects in North America, as reported by Energy-Storage.news in January.

This article requires Premium SubscriptionBasic (FREE) Subscription

Try Premium for just $1

  • Full premium access for the first month at only $1
  • Converts to an annual rate after 30 days unless cancelled
  • Cancel anytime during the trial period

Premium Benefits

  • Expert industry analysis and interviews
  • Digital access to PV Tech Power journal
  • Exclusive event discounts

Or get the full Premium subscription right away

Or continue reading this article for free

Meanwhile vendor Blue Steel Power is a joint venture (JV) between two other developers, Open Road Renewables, and Eolian. Eolian incidentally made headlines in 2022 for being the top recipient of venture capital (VC) funding in the energy storage sector during the calendar year with US$925 million raised, as tracked by research firm Mercom.

More recently Eolian claimed to have the first project in the US to avail of the newly-introduced investment tax credit (ITC) for standalone energy storage with a tax equity investment in two large-scale BESS projects in Texas’ ERCOT market.

Aypa will take over development of the Indiana projects from Blue Steel. Eolian CEO Aaron Zubaty said Open Road and Eolian originated the projects in 2018 anticipating, “the need to add flexible, dispatchable resources to MISO”. Conditional use permits for the sites were granted in late 2022, Zubaty said.

“With anticipated shortfalls in capacity resources in MISO, developing and operating the Williams and Fletcher projects will be critical to efficiently improving grid resiliency,” Aypa Power CEO Moe Hajabed said.

Aypa Power was previously known as NRStor C&I and spun out from Canadian developer NRSTor before being sold to Blackstone in 2018 and rebranded, with a new head office in Texas and a pivot in focus from the commercial and industrial (C&I) segment to utility-scale.

The company recently contracted for the supply of 487MWh of BESS with Canadian Solar’s CSI Solar manufacturing/system integrator subsidiary. That deal was to cover equipment for Cald, a standalone BESS in California.

Cald is expected to come online in the first half of next year, while expected commissioning dates for the Williams Power and Fletcher Power projects in Indiana have not yet been announced.

Energy-Storage.news’ publisher Solar Media will host the 5th Energy Storage Summit USA, 28-29 March 2023 in Austin, Texas. Featuring a packed programme of panels, presentations and fireside chats from industry leaders focusing on accelerating the market for energy storage across the country. For more information, go to the website.

24 March 2026
Dallas, Texas
The Energy Storage Summit USA is the only place where you are guaranteed to meet all the most important investors, developers, IPPs, RTOs and ISOs, policymakers, utilities, energy buyers, service providers, consultancies and technology providers in one room, to ensure that your deals get done as efficiently as possible. Book your ticket today to join us in 2026!

Read Next

January 9, 2026
Jointly owned by Masdar and Igneo Infrastructure Partners, independent power producer (IPP) Terra-Gen’s Lockhart CL I and II battery energy storage system (BESS) projects have reached commercial operations in San Bernardino County, California, US.
January 9, 2026
2025 saw genuinely large-scale BESS projects start construction in Germany, strengthening confidence among stakeholders. But significant challenges remain around grid connection, connection agreements and access to revenue streams, an operator said.
January 8, 2026
H.I.G. Capital-backed energy platform, Greenflash Infrastructure, has Safe Harboured more than 10GWh of lithium-ion (Li-ion) energy storage capacity.
January 7, 2026
A roundup of updates on BESS projects from SolarMax, Energy Vault, Engie, and Spearmint in the Electric Reliability Council of Texas (ERCOT) market.
Premium
January 5, 2026
In a surprising move, the North American development arm of Engie has asked the California Energy Commission (CEC) to pause the review of its Compass Energy Storage project destined for Orange County, in order to assess alternative development sites.