Leeward Renewable Energy starts 152 MW Twelvemile Solar 1 & 2 buildout amid shifting investor focus on SPP grid assets

Leeward Renewable Energy has initiated construction on its Twelvemile Solar 1 and 2 projects in southern Oklahoma, a combined 152 megawatts (MW) of solar capacity aimed at reinforcing regional grid adequacy amid a broader push toward diversified generation portfolios in the U.S. midcontinent.

While Oklahoma has long been a preferred site for wind development, the deployment of utility-scale solar at this scale signals a strategic pivot. With commercial operation targeted for early 2026, the Twelvemile projects are emerging as a key test case for solar deployment in transmission-constrained, weather-volatile service areas like the Southwest Power Pool (SPP), where load growth and reliability concerns are beginning to realign institutional capital flows.

The project is part of Leeward Renewable Energy’s 724 MW Oklahoma solar portfolio and follows its previously announced Mayes County Solar initiative. Together, these projects represent a regional footprint that is designed not only to meet rising demand but also to validate LRE’s longer-term objective of operating 10 GW of renewable energy assets by 2028.

Why are institutional developers targeting Oklahoma for large-scale solar in 2025?

Oklahoma’s traditional energy narrative has been dominated by natural gas production and wind-based generation. But solar is gaining traction as developers seek to capitalize on the state’s underutilized solar irradiance, expansive land availability, and proximity to SPP’s high-voltage interconnection points.

The Twelvemile projects were acquired by Leeward Renewable Energy from Red River Renewable Energy LLC, a joint venture between SunChase Power and Eolian LP. Both firms had worked on early-stage development, permitting, and siting—enabling LRE to begin construction without the long regulatory delays plaguing other jurisdictions.

Power market analysts believe Oklahoma is quietly becoming a clean energy transition laboratory for the midcontinent, where grid planners must balance fuel diversity, economic development, and weather-related reliability stress. The strategic siting of the Twelvemile project reflects this logic, leveraging nearby substations and flat terrain to limit civil works costs and interconnection complexity.

What role could Twelvemile play in improving resource adequacy and peak load response?

At 152 MW, Twelvemile Solar 1 & 2 won’t radically change Oklahoma’s capacity mix on its own. However, its peak-day production profile is expected to align more closely with summer demand hours than wind or legacy coal plants. This timing is critical for SPP’s grid planning, especially as utilities face reliability compliance pressure and capacity reserve margin tightening.

Aaron Zubaty, CEO of Eolian, noted that the Twelvemile projects will provide near-term relief during peak load periods, highlighting the need for “resource supply portfolios that embrace multiple technologies.” That framing aligns with broader grid operator guidance across the SPP and MISO regions, where extreme heat, load volatility, and gas supply constraints have prompted calls for more responsive generation profiles.

Moreover, because the projects are not reliant on firm dispatchable capacity or fossil fuel inputs, they help hedge against gas price volatility—a growing concern in power procurement discussions following price shocks during the 2021 and 2022 winter events.

How does this project reflect Leeward Renewable Energy’s evolving deployment model?

Leeward Renewable Energy, headquartered in Dallas, has spent the last several years evolving from a wind-heavy operator into a vertically integrated renewables platform with full lifecycle control—from development and EPC to asset management and O&M. With 4 GW of operating capacity across 30 projects, its shift toward faster execution cycles and broader geographic spread is gaining attention from long-term infrastructure investors.

The Twelvemile construction timeline—less than two years from acquisition to groundbreaking—is being interpreted by sector observers as a signal of execution efficiency and development maturity. It also reflects a broader industry trend: early-stage project developers like SunChase Power and Eolian increasingly function as feeders to institutional-scale operators like LRE, who bring the capital, contractor networks, and balance-sheet strength required to close and build at speed.

This structure has allowed Leeward to maintain a predictable project pipeline and strengthen its investor pitch around capital velocity, cost containment, and regulatory risk mitigation.

What kind of local and economic impact is Twelvemile expected to generate?

According to Leeward’s estimates, Twelvemile Solar 1 and 2 are projected to create up to 350 construction jobs at peak, with additional indirect job benefits tied to site access improvements, civil works, and material sourcing. The facilities are also expected to deliver around $29 million in state and local property tax revenue over their lifetime—funding that could bolster municipal services and school districts in rural counties near the Texas-Oklahoma border.

In addition to job creation, Leeward has committed to supporting local events such as the Durant Sustainability Coalition’s Earth Day Festival and the Magnolia Festival hosted by the Durant Area Chamber of Commerce. While these efforts are modest in scale, they serve to increase political and social acceptance of renewables in a state where fossil fuel interests remain politically entrenched.

However, some analysts remain cautious, noting that job creation from solar is highly front-loaded, and the long-term economic footprint depends heavily on operations and maintenance staffing decisions, as well as reinvestment strategies for the region.

Are there signs of broader investor confidence in Oklahoma’s solar trajectory?

Institutional sentiment around utility-scale solar in Oklahoma is improving, though it still lags behind interest in Texas, Arizona, and the Southeast. The success of Twelvemile could catalyze further capital deployment, especially if Leeward can demonstrate favorable levelized cost of energy (LCOE) metrics and stable interconnection outcomes.

While neither corporate PPA offtakers nor merchant pricing details have been disclosed for Twelvemile, investors are closely monitoring the project’s revenue model. Analysts say the facility could operate on a hybrid structure—potentially combining hedged energy sales with open-market exposure, a model increasingly common in ERCOT-adjacent projects where contract tenor mismatches and price volatility persist.

LRE’s stated ambition to reach 10 GW by 2028 implies that capital partners are likely aligned on near-term execution. The real test may come if permitting regimes tighten or if interest rate pressure continues to weigh on utility-scale project financing in non-IRA-enhanced states like Oklahoma.

What’s next for Leeward Renewable Energy and the role of solar in midcontinent energy planning?

As Leeward moves forward with Twelvemile and the broader Mayes County portfolio, the company is expected to deepen its presence in the SPP region. While co-located battery storage is not part of the Twelvemile phase-one plan, future development may incorporate energy storage as grid services markets expand and transmission constraints become more binding.

Industry experts anticipate that regional solar penetration will hinge on whether policy and infrastructure keep pace with demand. Oklahoma’s relatively hands-off regulatory stance could become a double-edged sword—facilitating faster permitting but offering limited revenue certainty in the absence of renewable portfolio standards or guaranteed procurement mechanisms.

That said, Twelvemile’s advancement is already being cited in industry forums as a case study in how legacy fossil-centric regions can attract clean energy capital through site efficiency, local collaboration, and low-cost grid access.