Origis Energy and TVA's Golden Triangle II Project Begin Commercial Operation

Origis Energy and the Tennessee Valley Authority (TVA)  announced that the first of three solar plus storage projects in their Mississippi portfolio has reached commercial operation. Golden Triangle II, a 150 MWac solar project with 50 MW battery storage, began generating carbon-free electricity on May 21, 2024.

“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 Johan Vanhee, Chief Commercial Officer & Chief Development Officer for Origis. “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.”

The Magnolia State is home to two other Origis renewable energy projects – Golden Triangle I, in Lowndes County, a 200 MWac project with 50 MW of battery storage and Optimist, in Clay County, a 200 MWac project with 50 MW of battery storage. This is the largest battery storage portfolio under construction in the state, which helps maintain TVA’s leadership in clean power generation.

When completed in 2025, Origis’ Mississippi clean-energy complex will have a total capacity of 550 MW plus 150 MW of battery storage. Roughly 1.5 million solar panel modules will be installed at the three sites, enough to power an estimated 126,000 homes.

“As a national clean energy leader, TVA is on the forefront to drive carbon reduction across all sectors of the economy and provide the clean power needed to fuel our region’s growth,” said Amy Tate, TVA Southwest Region Executive. “Together, with partners like Origis, TVA is developing carbon-free energy solutions that create jobs and investment in the communities we serve.”

Estimated economic benefits from the three projects include USD 106 million in near-term construction and hiring gains to the area. Over the life of the solar complex, they will provide another USD 145 million in estimated regional economic benefits.

RES is providing construction services to Origis for the portfolio, employing an estimated 500 people over the course of the three projects. Upon completion of the plants, Origis Energy Services will operate and maintain the portfolio, employing approximately 9 on-site jobs over the 35+ project life years. The utility-scale battery storage for each site is provided by Prevalon Energy, a rebranding of Mitsubishi Power Americas battery energy storage business.