Longroad Energy brings battery storage capacity at Arizona solar ‘Complex’ to 2.4GWh

LinkedIn
Twitter
Reddit
Facebook
Email

US renewable energy developer, Longroad Energy, announced financial close of 111MWdc solar and 85MWac/340MWh storage project Sun Pond in Maricopa County, Arizona, 4 December.

The project is expected to be operational by mid-2026, when the output will be purchased by the city of San Jose, California and Ava Community Energy, a utility servicing Alameda County, California, via long-term power purchase agreements (PPAs).

This article requires Premium SubscriptionBasic (FREE) Subscription

Enjoy 12 months of exclusive analysis

  • Regular insight and analysis of the industry’s biggest developments
  • In-depth interviews with the industry’s leading figures
  • Annual digital subscription to the PV Tech Power journal
  • Discounts on Solar Media’s portfolio of events, in-person and virtual

Or continue reading this article for free

Subsidiary of US Bank focusing on tax credit investments and syndications, US Bancorp Impact Finance is the project’s tax equity investor, also leading debt financing for the project, joined by German Commerzbank and Canadian bank CIBC acting as joint lead arranger and green loan coordinator.

US Bancorp Impact Finance recently closed a tax equity commitment with Fengate Asset Management and developer Alpha Omega Power (AOP) for a 400MWh BESS in California.

American construction company McCarthy Building Companies (McCarthy) will act as the engineering, procurement and construction (EPC) contractor on the Sun Pond project.

The Sun Pond 85MWac/340MWh battery energy storage system (BESS) will be provided by US energy storage provider Fluence and include power conversion systems (PCS) from US inverter manufacturer EPC Power.

Chinese PV company and inverter supplier Sungrow will be supplying the project’s solar inverters.

BESS cells will be provided by Japan-headquartered lithium-ion (Li-ion) battery manufacturer Automotive Energy Supply Corporation (AESC).

BESS integrator Fluence, the company that recently secured US-manufactured cells from AESC, will work with Longroad and American operations and maintenance firm NovaSource Power Services to provide operations and maintenance (O&M) services for the Sun Pond project.

NovaSource is the provider of O&M services for the Powin-provided BESS on Longroad’s Sun Streams 3, a solar-plus-storage project with 215MWdc solar PV and 215MW/860MWh of battery storage, also located in Arizona’s Maricopa County.

John Zahurancik, President of Fluence Americas, said that the Sun Pond project will use Fluence’s advanced asset management analytics tool, the AI-based Nispera APM software. The company claims that users of the software could see annual profitability lift of 3-10%.

Sun Pond is the fifth Longroad financed project in four years to utilise First Solar’s thin-film Cadmium Telluride (CdTe) photovoltaic (PV) solar technology.

The solar-plus-storage project also joins Longroad’s Sun Streams Complex, made up of three additional Longroad projects, bringing the total for the complex to 973MWdc of solar and 600MWac/2,400MWh of storage.

Sun Streams Complex ProjectMWdc, MWac/MWh
Sun Streams 2 – Operational mid 2021200MWdc solar
Sun Streams 3 – Operational mid-2024285MWdc solar, 215MWac/860MWh storage
Sun Streams 4 – Expected mid-2025377MWdc solar, 300MWac/1200MWh storage
Sun Pond – Expected mid-2026111MWdc solar, 85MWac/340MWh storage
A breakdown of Longroad’s Sun Streams Complex.

In March, Longroad closed on Serrano, a large-scale solar PV and battery storage project in Pinal and Pima Counties, Arizona, with PV modules developed by First Solar.

Prior to closing on Serrano, Longroad closed on Sun Streams 4, the company’s largest solar and storage project to date, at 377MWdc PV and 300MWac/1200MWh, part of a portfolio it acquired from First Solar.

3 June 2025
Stuttgart, Germany
Held alongside the Battery Show Expo Europe in Stuttgart, Energy Storage Germany spotlights Germany’s rapid ascent in the European storage sector. Once driven by residential demand, utility-scale projects are now surging, with 184 MW added across 44 projects in 2023. With nearly 16 GWh of capacity installed in the first half of 2024, Germany is set to integrate 24 GW of utility-scale energy storage by 2037, creating substantial opportunities.
17 June 2025
Napa, USA
PV Tech has been running PV ModuleTech Conferences since 2017. PV ModuleTech USA, on 17-18 June 2025, will be our fourth PV ModulelTech conference dedicated to the U.S. utility scale solar sector. The event will gather the key stakeholders from solar developers, solar asset owners and investors, PV manufacturing, policy-making and and all interested downstream channels and third-party entities. The goal is simple: to map out the PV module supply channels to the U.S. out to 2026 and beyond.
1 July 2025
London, UK
UK Solar Summit 2025 will look at the role solar currently plays in the energy mix, how this will change over the coming years and how this aligns with net-zero and other government targets. We will break down all these challenges and help build up solutions through discursive panels, motivational keynotes and case studies, with newly added interactive sessions to get you moving and meeting your peers, making the connections you need to boost your business.
11 November 2025
San Diego, USA
The 2024 Summit included innovative new features including a ‘Crash Course in Battery Asset Management’, Ask-Me-Anything formats and debate-style sessions. You can expect to meet and network with all the key industry players again in 2025 from major US asset owners, operators, RTOs and ISOs, optimizers, software and analytics providers, technical consultancies, O&M technology providers and more.
24 February 2026
InterContinental London - The O2, London, UK
This isn’t just another summit – it’s our biggest and most exhilarating Summit yet! Picture this: immersive workshop spaces where ideas come to life, dedicated industry working groups igniting innovation, live podcasts sparking lively discussions, hard-hitting keynotes that will leave you inspired, and an abundance of networking opportunities that will take your connections to new heights!

Read Next

May 21, 2025
Installed battery storage capacity in California, US has grown from 771MW in 2019 to more than 15,500MW as of 31 January, 2025.
May 21, 2025
Commissioning has commenced on the 111MW/285MWh Templers battery energy storage system (BESS) in South Australia.
Premium
May 20, 2025
Matthew Biss examines legislative moves regarding the safe siting and deployment of battery storage in California, the biggest market by state in the US.
May 20, 2025
Fluence has taken a step forward in its strategy to “fully onshore production, as quickly as possible,” opening a new factory in the US.
May 20, 2025
Developer and independent power producer (IPP) Zelestra has ordered 1GWh of BESS technology plus PCS equipment from Sungrow for a project in Chile.

Most Popular

Email Newsletter