Sunraycer breaks ground on 620 MW Texas solar-storage project

Sunraycer Renewables has broken ground on a portfolio of solar-plus-storage projects in Northeast Texas that together will deliver more than 620 MWdc of solar generation and over 475 MWh of battery energy storage, according to a March 17, 2026 Sunraycer announcement carried by PR Newswire and reported by Solar Power World. The projects sit roughly 90 miles outside Dallas.

What Was Announced

Sunraycer said the portfolio comprises the Lupinus I & II Solar and BESS projects in Hagansport, Texas, and the Eagle Springs Solar & BESS project in Lake Creek, Texas. Per the company, Lupinus I & II will provide 520 MWdc of solar capacity paired with 411 MWh of onsite battery storage, while Eagle Springs adds 100 MWdc of solar and 66 MWh of storage.

Construction at Eagle Springs is already underway, with commercial operations expected in late 2026, the company said; groundbreaking for Lupinus I & II takes place in March 2026, with completion anticipated in early 2028. McCarthy Building Companies is serving as the engineering, procurement, and construction (EPC) contractor for both projects. Sunraycer and McCarthy said the work is expected to support more than 200 local construction jobs, with hiring and supplier spending prioritized in nearby communities including Cooper, Sulphur Springs, Greenville, Mt. Vernon, and Paris, Texas.

Why It Matters

The combined portfolio — more than 620 MW of solar paired with 475 MWh of storage — feeds directly into ERCOT, the grid operator for most of Texas, where solar-plus-storage has become a primary tool for meeting fast-growing peak demand and firming intermittent output. Energy-Storage.news, which tracked the groundbreaking in a national roundup, noted the projects as part of a broader wave of U.S. solar-plus-storage builds advancing in 2026.

Co-locating 475 MWh of batteries with utility-scale solar lets the portfolio shift midday generation into evening peaks and provide ancillary services — capabilities ERCOT increasingly relies on as it integrates record volumes of renewables.

Critical Perspective

Announced capacities are nameplate figures at groundbreaking, not delivered megawatt-hours: with Lupinus I & II not slated for completion until early 2028, interconnection timing, equipment supply, and ERCOT queue throughput will determine when this capacity actually reaches commercial operation. The 475 MWh of storage is also modest relative to the 620 MWdc of solar — useful for intraday shifting but well short of the duration needed to firm the solar through a multi-day lull, leaving the portfolio’s evening output dependent on the broader ERCOT fleet.

Sources

• https://www.prnewswire.com/news-releases/sunraycer-celebrates-start-of-construction-of-lupinus-i–ii-and-eagle-springs-solar–storage-projects-in-texas-302715699.html
• https://www.solarpowerworldonline.com/2026/03/construction-underway-on-620-mw-solar-project-portfolio-in-northeast-texas/
• https://www.energy-storage.news/us-roundup-solar-plus-storage-projects-advance-across-the-country/

Related Coverage

• Enbridge Breaks Ground on $1.2 Billion Cowboy Solar and 1.6 GWh — breaks ground on large solar and battery storage project
• Georgia Power Breaks Ground on 260 MW / 1 GWh Battery Storage — breaks ground on large solar and battery storage project
• DESRI Breaks Ground on 270 MW Foxtail Flats and Four Mile Mesa — breaks ground on large solar and battery storage project
• NRG and Sunrun Launch Texas VPP Targeting 1 GW — launches Texas virtual power plant targeting 1 GW