US developers Spearmint, Nexus, Granite Source, On.Energy secure combined US$300 million for BESS pipelines

June 13, 2023
LinkedIn
Twitter
Reddit
Facebook
Email

Developers Spearmint Energy, On.Energy, Nexus Renewables and Granite Source Power have collectively secured US$300 million for US battery storage projects, the bulk by Spearmint.

Spearmint Energy secures US$200 million facility

Spearmint yesterday (12 June) announced the close of a US$200 million credit facility with Aiga Capital Partners, which will support the development of its 1.2GW/2.4GWh battery storage pipeline in the ERCOT, Texas market.

The pipeline includes three 300MW projects in Cooke, Galveston, and Brazoria, the ‘Nomadic’ portfolio acquired in March this year, and another 150MW/300MWh project, Revolution, acquired late last year. Revolution is set to come online in 2023 while the Nomadic portfolio has commercial operation dates (COD) in 2025.

Javelin Capital and Paul Hastings LLP provided financial advisory and legal counsel services respectively to Spearmint while Holland and Knight served as legal counsel for Aiga.

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

Andrew Waranch, CEO of Spearmint who has previously guest blogged for Energy-Storage.news, said: “This facility will enable Spearmint to accelerate the construction of our projects currently under development, capitalise on our strong pipeline of development opportunities, and reliably deliver renewable energy to the grid for years to come.”

On.Energy raises US$20 million in Series B

Meanwhile, pan-American battery storage system integrator and IPP On.Energy today announced a US$20 million Series B led by Ultra Capital and participated in by Phalanx Investment Partners.

A significant allocation of the funds will go towards the development, construction and operation of its 300MWh ERCOT pipeline comprising 10MW/20MWh projects. CEO Alan Cooper recently talked to Energy-Storage.news about the firm’s pivot to focusing on the US market.

A spokesperson said the ERCOT projects would be in the Houston/Dallas Corridor, use LFP battery cells and the first 100MWh would come online in mid-2024.

Two other US developers announced smaller financing deals for their respective battery storage pipelines on Monday too, one of which also involved Aiga.

Nexus Renewables closes US$40 million financing deals

Nexux Renewables has closed a total of US$40 million in financing through four separate deals for a 10MW/40MWh battery storage in California and to advance the development of the rest of its pipeline, including a 300MW/600MWh system in Texas.

The financing is comprised of a US$13.3 million senior secured loan led by Aiga Capital Partners, a US$14.5 million project-level financing led by Synovus Bank, and a US$3.7 million commitment for privately-placed preferred shares and US$10.8 million tax equity commitment, both led by Greenprint Capital.

The tax equity commitment from Greenprint will take advantage of the new standalone investment tax credit (ITC) for standalone energy storage. While the long-awaited guidance on the domestic content 10% adder to the ITC was recently released, the industry is still awaiting more details on how the ITC can be transferred between investors in a secondary market (so-called ‘transferability).

It is part of Nexus’ pivot from a pure-play renewables developer to an independent power producer (IPP). Nexus secured a US$100 million partnership with vertically-integrated distributed energy platform company Scale Microgrid Solutions (SMS) last year, covered by Energy-Storage.news at the time.

Granite Source Power bags US$40 million equity capital

The third of the three US developers to secure capital for battery storage projects on Monday was Granite Source Power (GSP). The New Hampshire-based developer announced an equity partnership with New Energy Capital (NEC), totalling US$40 million in capital, to fund further renewable and battery storage developments by GSP.

Few details were given on what projects the growth capital would go towards in the short-term. The announcement said GSP has a 3GW greenfield development pipeline and is currently marketing a 2GW standalone battery storage portfolio.

15 September 2026
San Diego, USA
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.

Read Next

April 9, 2026
Gridstor and Axpo have executed an energy storage revenue swap agreement for a 220MW/440MWh BESS in Galveston County, Texas.
Premium
April 8, 2026
A panel at the 2026 US Energy Storage Summit in Dallas, Texas, discussed the “creative, innovative structures” developers are having to embrace to secure long-term revenues for energy storage projects.
April 7, 2026
Carbon dioxide-based long-duration energy storage (LDES) company Energy Dome and digital infrastructure company New Era Energy & Digital (NUAI) have signed a memorandum of understanding (MOU) to deploy Energy Dome’s CO2 Battery Plus technology in Odessa, Texas.
Premium
April 7, 2026
The project represents a US$128.6 million investment and is scheduled to begin construction this year, with commercial operations commencing in December 2026.
Premium
April 2, 2026
The Reno Planning Commission, in Nevada, US, recommended approval for a conditional-use permit for the 200MW Trego Grid energy storage project on 4 March.