Origis Energy commissions 150MW Golden Triangle II solar-plus-storage project

Facebook
Twitter
LinkedIn
Reddit
Email
origis energy
Origis Energy’s Mississippi portfolio will have a combined capacity of 550MW. Image: Origis Energy

US renewable energy developer Origis Energy has commissioned a 150MW solar-plus-storage project in the US state of Mississippi.

The project, Golden Triangle II, includes a 50MW battery energy storage system (BESS), and started producing electricity on 21 May. The project is part of a three-facility portfolio, including the Golden Triangle I project and the Optimist project, which each have 200MW of solar generation capacity alongside 50MW of BESS capacity. This is the largest storage portfolio under construction in Mississippi, and Origis expects to commission all three projects next year.

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

“Solar energy enhances Mississippi’s economic competitiveness, and Origis is removing limits to a cleaner, brighter future by building the region’s clean-energy infrastructure,” said Origis chief commercial and procurement officer Johan Vanhee. “Golden Triangle II is the first step in fostering a zero-carbon economy across the state that supports our nation’s economic and energy security goals.”

Origis signed a power purchase agreement (PPA) to sell power generated at the projects to the Tennessee Valley Authority (TVA), a utility, at what the companies called “competitive rates”. TVA will use the power to meet the energy demand of its large industrial customers, including Meta, which is among the leaders in clean power acquisition in the US, having signed a PPA with Pine Gate Renewables earlier this week.

TVA has announced plans to expand its renewable energy portfolio in recent years, aiming to add 10GW of new solar generation capacity by 2035, up from 2.4GW in operation currently. The TVA operates predominantly in Mississippi, which has one of the smaller solar sectors in the US, with the Solar Energy Industries Association (SEIA) expecting developers to add just 2.2GW of new capacity to the Mississippi solar sector in the next five years, 24th among the states.

In January, Origis announced that it had received US$317 million in funding from J.P. Morgan to support the development of both the Golden Triangle II project, and the 200MW Escalante Solar project in New Mexico.

Read Next

June 3, 2026
Queensland has opened a formal call for proposals under the state government’s AU$200 million North West Energy Fund in Australia.
June 3, 2026
With BESS in the generation mix, energy is no longer simply generated and exposed to the market; it can be stored and used when most valuable.
June 2, 2026
Svea Solar Utility has secured €185 million (USS$215.4 million) in finance to support the development of Sweden’s largest solar PV project.
Sponsored
June 2, 2026
Virto.MAX is built for sales teams and project developers of commercial & industrial PV to create designs of roof, ground and carport projects.
Premium
June 1, 2026
What financing options are there for renewable developers who find themselves shut out of some of Europe’s supportive auction programmes?
May 29, 2026
BHP and Yindjibarndi Energy Corporation (YEC) will assess potential large-scale energy solutions for iron ore operations in Western Australia's Pilbara region.

Upcoming Events

Solar Media Events
June 16, 2026
Napa, USA
Media Partners, Solar Media Events
June 30, 2026
Sacramento, California
Media Partners, Solar Media Events
August 25, 2026
São Paulo, Brazil
Media Partners, Solar Media Events
September 1, 2026
Mexico City, Mexico
Media Partners, Solar Media Events
September 9, 2026