As of June 2026, the Green & Clean Power Arkansas Solar and Storage Project, a roughly $300 million solar and battery storage facility on about 500 acres in Osceola, Arkansas, has moved from construction into full operation. The development held to its original timeline, reaching completion in the autumn of 2025 and now feeding renewable power straight into the neighbouring Hybar steel rebar mill. Confirmation came at the mill’s grand opening in November 2025, when the ownership group reported that the solar and storage plant had been finished alongside the mill and a new river port. The plant supplies electricity on a behind the meter basis, flowing directly to Hybar rather than through the public grid, which the partners say makes Hybar the only steel producer in North America running entirely on renewable energy whenever the sun is shining.
Hybar Grand Opening Confirms the Nation’s Largest On Site Solar Array
The clearest marker of progress was the grand opening of the Hybar rebar mill on 12 November 2025, which drew more than 500 customers, suppliers, lenders, investors and government officials to Mississippi County. Hybar described the behind the meter solar and battery installation that Green & Clean Power built as the largest of its kind in the country. The configuration pairs a 105 megawatt solar array with a 160 megawatt hour battery system, enough to cover close to 40 percent of the mill’s annual power demand. Across the steel mill, the power facility and an adjacent Mississippi River port, the wider venture represents an investment of nearly $1 billion. The mill is now rated to produce more than 700,000 tons of reinforcing bar a year, about 7 percent of total United States rebar demand.
What the Osceola Solar Project Means for Arkansas’s Energy Mix
The Osceola plant is one piece of a broader shift in how Arkansas makes power. The very city that hosts the solar and storage facility is also a part owner of the newly approved $2.6 billion Independence Gas Plant near Newark, a 1,499 megawatt combined cycle station meant to replace retiring coal capacity by the end of the decade. Taken together, the two projects show the state backing renewables for heavy industry and large dispatchable gas for the wider grid at the same time. For Hybar, the behind the meter model sidesteps the multi year wait for transmission upgrades that slows many clean energy builds, because the electricity never travels far. It also hands a single industrial customer firm, low carbon supply, a template other manufacturers chasing net zero targets are likely to study.
Green & Clean Power Eyes MISO Grid Sales and Hybar Expansion
The next milestone lies with the grid. Green & Clean Power has applied to connect to the Midcontinent Independent System Operator, a step the developer expected to take about three years from financial close, which points to a potential link in the 2027 to 2028 window and would let the plant sell surplus solar and stored power to outside buyers. No connection date has been confirmed. The ownership group has also widened since the original financing, with Koch Minerals & Trading, a Koch subsidiary, now listed among the backers alongside TPG Rise Climate, Quanta Services and Global Principal Partners. Demand for this kind of supply may grow further after Hybar chief executive Dave Stickler said in 2025 that the company’s plan had expanded from two rebar mills toward three or four, with a possible flat rolled steel mill to follow.
Project Overview
- Project Name: Green & Clean Power Arkansas Solar and Storage Project
- Location: Osceola, Mississippi County, Arkansas
- Developer / Owner: Green & Clean Power LLC, part of the Green & Clean Holdings group
- Total Cost / Value: Approximately $300 million in debt and equity
- Scale / Capacity: 105 megawatt solar array paired with a 160 megawatt hour battery storage system, on about 500 acres
- Construction Start: Underway by late 2024, following financial close in December 2024
- Expected Completion: Autumn 2025, completed and confirmed operational at the November 2025 Hybar grand opening
- Funding / Financing: $165 million construction debt from KfW IPEX-Bank and $100 million takeout financing from the Arkansas Teacher Retirement System
- Current Status: Complete and operational, supplying behind the meter renewable power to the Hybar rebar mill
- Key Milestone: November 2025 grand opening of the Hybar mill, with the solar and battery facility billed as the nation’s largest behind the meter system
Project Team
- Green & Clean Power LLC: Developer, owner and operator of the solar and battery storage facility
- Hybar LLC: Power offtaker and adjacent steel rebar mill, sister company to the project
- Green & Clean Holdings LLC: Parent company of the venture
- Green & Clean Terminals LLC: Affiliated Mississippi River port operator
- DEPCOM Power, Inc.: Engineering, procurement and construction (EPC) contractor for the solar and battery systems
- KfW IPEX-Bank: Construction debt financier, about $165 million
- Aurora Energy Research: Market advisor to KfW IPEX-Bank
- Arkansas Teacher Retirement System (ATRS): Takeout financing provider, about $100 million
- TPG Rise Climate: Equity investor and owner
- Quanta Services, Inc.: Equity investor and owner
- Global Principal Partners LLC: Equity investor and owner, the Hybar senior management investment entity
- Koch Minerals & Trading, LLC: Owner, a subsidiary of Koch, Inc.
- Entergy Arkansas: Grid power supplier to Hybar under a special rate contract
- Midcontinent Independent System Operator (MISO): Grid operator for the planned interconnection
Published 3rd December 2024: Green & Clean Power announces it has secured financing for its Arkansas Solar and Storage Project. Here is what we know.
Green & Clean Power LLC (GCP) has announced that it has closed on approximately $300 million of debt and equity capital to develop, own and operate a solar energy generation and battery storage system on 495 acres of land in Osceola, Arkansas. KfW IPEX-Bank offered about $165 million for the construction debt facility with Aurora Energy Research as its Market Advisor. ATRS contributed the remaining $100 million in takeout financing. GCP’s facility is already under construction with the expected completion date set as fall of 2025.
“Sustainable steelmaking is steadily transforming the state of Arkansas and we are happy to be part of it,” said Mark White, Executive Director of The Arkansas Teacher Retirement System. “We are happy to support this entity in its newest phase because it is advantageous for our state, it is environmentally friendly, and most importantly, it will benefit our members.”
“The sustainable production and recycling of steel plays a vital role in achieving the global decarbonization,” stated Dr. Velibor Marjanovic, Member of the Management Board of KfW IPEX-Bank. “Following the financing of the Hybar rebar mill in 2023, we are happy to support the Green & Clean Power’s Solar and Storage project. By doing this, we are underlining once more our dedication to projects that play a significant role in the process of the global shift toward the sustainable future with zero carbon emissions.
Power supply deal, Start of Operations
Also, GCP will also start the process of applying for interconnection with the Midcontinent Independent System Operator (MISO) grid system. Within three years, GCP plans to connect to the MISO grid, enabling it to sell excess solar and battery-stored power to external customers.
Green & Clean Power’s Arkansas Solar and Storage Project Factsheet
Project Overview
Company: Green & Clean Power LLC (GCP)
Location: Osceola, Arkansas
Project Size: 495 acres
Project Type: Solar energy generation and battery storage system
Financial Details
Total Capital Raised: $300 million
Debt Financing:
$165 million from KfW IPEX-Bank (construction debt facility)
Equity Financing:
$100 million from Arkansas Teacher Retirement System (ATRS)
Equity Partners:
Quanta Services, Inc.
Global Principal Partners
Green & Clean Power’s Arkansas Solar and Storage Project Specifications
Construction Status: Ongoing
Expected Completion: Fall 2025
Primary Power Consumer: Hybar LLC (sister company steel rebar mill)
Power Supply:
Approximately 40% of Hybar’s power requirements
Complementary to existing power purchase agreement with Entergy Arkansas
Technical Details
EPC Contractor: DEPCOM Power, Inc.
Grid Interconnection:
Applying to Midcontinent Independent System Operator (MISO)
Anticipated grid connection within three years
Read also: Mia Rose Holdings secures financing for The Junction at Shiloh, Arkansas
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