Solmar Insights
Eolian is moving forward with the construction of the 200 MW Flint Grid energy storage installation just outside Columbus, Ohio. The system, providing 1 GWh of five-hour-class storage, is sited adjacent to major data center and industrial loads in New Albany and is expected to become commercially operational ahead of the 2027 to 2028 PJM capacity year.
Key figures
200 MW battery storage adjacent to New Albany data center
1 GWh five-hour system
First grid-scale battery permitted by Ohio Power Siting Board
Commercial operation planned before the 2027 to 2028 PJM capacity year
Ohio’s largest battery storage to date
The Flint Grid project marks a significant milestone as the largest battery storage system permitted by the Ohio Power Siting Board. Designed at a nameplate capacity of 200 MW and 1 GWh of total energy, the project leverages a five-hour duration storage profile. The installation will utilize BYD lithium iron phosphate (LFP) battery technology, according to Eolian’s initial filings with the state regulator.
Sited near New Albany, a hotspot for hyperscale data centers and related industrial energy loads, Flint Grid is positioned to provide high-capacity load following, peak shaving, and reserve support functions. This build is a response to both rapid load growth and the need for grid flexibility in a region increasingly shaped by digital and industrial demand centers.
The Ohio Power Siting Board approval unlocks a pathway for additional battery deployments in a state that, until now, lacked grid-scale installations, setting a precedent for the regulatory review of similar projects in the near term.
With Eolian committing capital and resources several years ahead of current demand forecasts, this project also signals a developing trend in pre-emptive infrastructure investment linked directly to transmission capacity constraints and major offtake loads like data centers.
Battery system design and technology
The technical backbone of Flint Grid is the BYD MC Cube-T Battery Energy Storage System (BESS), built around LFP chemistry known for its safety, cycle life, and bankability. As documented in Eolian’s initial filings with regulators, this modular design supports rapid deployment, modularity for system expansion, and robust thermal management, key requirements for colocated deployments near critical digital infrastructure.
The five-hour discharge duration reflects a strategic choice to balance high capacity with meaningful energy provision, targeting use cases such as capacity market participation, frequency regulation, and buffering of variable renewables. The close proximity to New Albany’s data center concentration, which faces growing grid interconnection and reliability challenges, further aligns this storage asset for utility interactivity and digital load support.
Construction of the project is budgeted in the hundreds of millions, reflecting the complexity and scale of integrated grid storage at this capacity and signaling the entry of sophisticated battery technology vendors and integrators into the Midwest bulk power segment.
Strategic siting for digital infrastructure
New Albany and its surrounding corridor have emerged as an epicenter for national-scale data center deployments, including hyperscale and cloud computing providers. The adjacent siting of Flint Grid illustrates the convergence of digital and energy infrastructure, with the project directly positioned to support not only general grid reliability but also the specific operating requirements of these high-density loads.
Data centers require uninterruptible and resilient power, and the ability of large-scale storage systems to deliver both peak-shaving and emergency backup functions is increasingly valuable as these facilities continue to expand. Eolian’s proximity decision both leverages existing transmission infrastructure and positions the project to buffer data center demand surges against grid constraints and wholesale power market volatility.
For regional developers and power buyers, this project also highlights how battery assets are becoming a baseline feature for enabling further digital expansion in the Midwest, particularly as legacy generation retires and the interconnection landscape tightens.
Regulatory and market outlook
Flint Grid is the first grid-scale battery system to secure full permitting from the Ohio Power Siting Board, following a multi-year process that began with initial documentation in 2021. This regulatory breakthrough signals a new era for battery permitting in Ohio, potentially accelerating additional project approvals as the state faces mounting pressure to meet both traditional load and the requirements of massive digital campuses.
The timing of commercial operation, planned in advance of the 2027 to 2028 PJM capacity year, positions Eolian to participate in capacity, reserve, and ancillary service markets central to PJM’s reliability planning process. As ongoing debates continue about market rules and the treatment of storage resources, the Flint Grid project will serve as an early test for long-duration, utility-scale batteries in the state’s bulk power mix.
Industry leaders, including Eolian CEO Aaron Zubaty, are making the case that market and policy stability is crucial to ensuring the success of such investments, with implications for future project finance and capital deployment decisions.
Implications for Ohio and PJM region
The addition of 200 MW and 1 GWh of controllable battery storage can provide vital grid services for both regional operators and large corporate power users. As PJM Interconnection faces increasing labor from load forecast adjustments, renewable energy build-out, and generator retirements, flexible and responsive storage is poised to play a more prominent role.
This project not only increases local reliability and load-following accuracy but also demonstrates scalable use of technology already commercialized in global markets. Flint Grid’s operational profile could also inform future regulatory guidance on siting, technology standards, and transmission upgrades for energy storage assets across the PJM footprint.
The capital commitment and early-stage development underscore how policy certainty can enable private sector investment to bridge emerging infrastructure gaps, especially in markets where rapid load growth outpaces conventional grid expansion timelines.
What this means for buyers
For institutional buyers, developers, and data center operators, Flint Grid demonstrates the growing importance of colocating utility-scale storage with high-demand digital infrastructure. The project’s approval by Ohio regulators may streamline permitting for future projects in the state, while the five-hour system duration offers flexibility for capacity market participation and real-time grid support. Buyers with significant loads in the PJM region should watch for further regulatory changes and evolve procurement strategies to leverage storage-backed supply. Close alignment between energy infrastructure investment and digital development is likely to become a standard feature throughout the Midwest and beyond.
