US solar and storage project progress for Pine Gate, Avantus, Arevon in Western states

By Will Norman, Jonathan Touriño Jacobo
LinkedIn
Twitter
Reddit
Facebook
Email

A flurry of big solar and storage project news in the US, with Pine Gate Renewables having a huge project approved in Oregon, Avantus signing a PPA with utility APS for one in Arizona and Arevon completing one in California.

Oregon green lights 2.4GW Pine Gate Renewables solar-plus-storage site

The US state of Oregon has granted final discretionary approval to the 1.2GW/1.2GWh Sunstone solar-plus-storage project in Morrow County.

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

The Oregon Energy Facility Siting Council (EFSC) granted the approval on Friday (6th December) and authorised the developer, Pine Gate Renewables, to proceed with construction.

Sunstone is set to begin its engineering and procurement phase in early 2025 and start phased construction in 2026. It will pair 1.2GW of PV and 1.2GW of energy storage.

Once completed, Pine Gate said the project would be the largest solar and storage plant in the US. The developer said it is in discussion with local utilities and other potential customers for the purchase of the power produced at the site and its associated renewable energy credits (RECs).

See the full original version of this article on PV Tech.

Avantus, Arizona Public Service ink 100MW solar PV PPA

US developer Avantus has signed a power purchase agreement (PPA) with regional utility Arizona Public Service Company (APS) for a 100MW solar PV project in Pinal County, Arizona, US.

Aside from the 100MW PV capacity, the Kitt Solar project is paired with 400MWh of energy storage capacity. Construction of the project is expected to start in 2025, while commercial operations are set to begin in 2026.

Combining solar PV with energy storage capacity will provide resiliency to the Arizona grid, while ensuring it can meet peak demand during extreme heat conditions, said the company. In 2024, the state had a record streak of 113 consecutive days with temperatures above 100 degrees Fahrenheit (37.7 degrees Celsius), which also broke electricity demand records.

See the full original version of this article on PV Tech.

Arevon powers up 384MW/600MWh California solar-plus-storage site

US independent power producer (IPP) Arevon has begun commercial operations at the 384MW/600MWh Eland 1 solar-plus-storage project in California.

Arevon said the project, in Kern County, brings its operational renewable energy capacity in California alone to over 3GW. It pairs 384MWh of PV capacity with a 600MWh energy storage system.

A second phase of the project, Eland 2, is currently under construction and set to come online in Q1 2025. The two sites will have a combined 758MW of solar PV and 300MW/1.2GWh of energy storage capacity, making them one of the largest solar-plus-storage sites in the US.

Back in February, Arevon secured US$1.1 billion in tax equity and debt financing to support the construction of Eland 2. The two sites have a combined capital cost of over US$2 billion.

The recently commissioned Eland 1 site is contracted under a long-term power purchase agreement (PPA) with the Southern California Public Power Authority.

See the full original version of this article on PV Tech.

Read Next

July 18, 2025
The Australian Energy Market Operator (AEMO) has made grid-forming BESS a priority for the National Electricity Market (NEM) and South West Interconnected System (SWIS) for 2026.
July 18, 2025
Acciona Energía has submitted plans for a wind-plus-storage site featuring up to 800MWh of BESS to Australia’s EPBC Act.
July 17, 2025
D.E. Shaw Renewable Investments (DESRI) has started construction at a 150MW solar-plus-storage project in the US state of New Mexico, the BESS for which will be manufactured in the US by LG Energy Solution.
July 17, 2025
Contemporary Amperex Technology Ltd (CATL) has signed a framework supply agreement for a project to export renewable energy from Indonesia to Singapore.
July 16, 2025
London Stock Exchange-listed Gore Street Energy Storage Fund (GSF) has entered into an agreement to sell its investment tax credits (ITCs) for the Big Rock energy storage project in California, US.

Most Popular

Email Newsletter