⚡ 4057 S UNION AVE

Site Diligence Analysis: 4057 S UNION AVE, Cook County, IL

As a senior BESS site evaluation analyst for Sunland America Corp, I have performed a comprehensive diligence analysis for the property located at 4057 S UNION AVE, Cook County, IL. This analysis focuses on the feasibility of developing a distribution-scale (≤5MW) Battery Energy Storage System (BESS) project at this location.

1. Site Access & Topography

• Road Access Quality and Equipment Delivery Feasibility: The property benefits from "Public" road access via S Union Ave, a well-established street in an industrial area of Chicago. This indicates good accessibility for standard vehicles. The "POI Onsite" designation further suggests direct access to the point of interest within the parcel. Given the industrial zoning and urban location, S Union Ave is highly likely to accommodate heavy equipment, including large transformers, battery containers, and construction machinery. The existing infrastructure in an industrial district typically supports such deliveries without significant upgrades.
• Likely Terrain Characteristics: The property's location in an industrial area of Chicago, coupled with "Industrial (General)" and PMD-8 (Planned Manufacturing District) zoning, strongly suggests a relatively flat and previously disturbed or developed terrain. Industrial sites in urban environments are often graded and prepared for development. The "Buildability: OK" assessment supports this, indicating no major topographic challenges for construction.
• Heavy Equipment Access: Based on the public road access and industrial context, heavy equipment access for BESS components (e.g., 40-foot battery containers, large power conversion system skids, main transformers) is considered feasible. No obvious physical barriers are indicated by the data.
• Access Easement Concerns: While "POI Onsite" is positive, specific access easements (e.g., for utility lines, neighboring properties) are "Unknown" and require verification through a title report and survey. Any existing easements could impact the usable footprint for BESS equipment.

2. Environmental Constraints

• FEMA Flood Zone Designation: The FEMA Flood Zone designation is "Unknown." This is a critical data gap. A BESS project must avoid high-risk flood zones (e.g., AE, VE) or implement costly flood mitigation measures. Verification through a FEMA FIRM map review is an immediate priority.
• Wetlands Presence and Setback Requirements: Wetlands presence is also "Unknown." This is another significant environmental constraint. If wetlands are present, federal (USACE) and state (IEPA) permits would be required, leading to substantial delays and potential loss of buildable area due to setback requirements. A Phase I Environmental Site Assessment (ESA) and potential wetland delineation are necessary.
• Critical Habitat / Endangered Species Risk: The data indicates "Critical Habitat: None" and "Protected Areas: None." This is a positive finding, suggesting a low risk of encountering endangered species or their habitats, which can be a major permitting hurdle.
• Brownfield/Superfund Status: The data notes "17 site(s) within ~2 mi" are brownfields/superfunds. This indicates a high concentration of contaminated sites in the vicinity. While the subject property itself is not explicitly identified as a brownfield, its proximity to many such sites raises concerns about potential historical contamination on-site or migration of contaminants from adjacent properties. This necessitates a thorough Phase I ESA, and potentially a Phase II ESA, to assess contamination risks. If the site *is* found to be a brownfield and remediated, it could qualify for the IRA brownfield bonus, but this is not confirmed. For now, it's primarily a risk.
• Chesapeake Bay Critical Area Implications: The data correctly states "N/A (non-MD)," so this is not a concern for a project in Illinois.
• Pipeline Proximity Safety Considerations: The data indicates "None within ~3 miles," which is excellent. This eliminates a significant safety and permitting concern often associated with BESS projects due to potential explosion risks and required setbacks from high-pressure pipelines.

3. Grid Infrastructure & Interconnection

• Nearest Substation: The "Quarry" substation is 1.9 miles away with a "Max Voltage: 138 kV." This distance is favorable for distribution-level interconnection, minimizing line extension costs. The 138 kV maximum voltage suggests a robust substation capable of handling significant load, potentially offering good capacity for a BESS project.
• Nearest Transmission Line: A 345kV transmission line (Commonwealth Edison Co) is located at 1.7 miles. While very close, the specified "IX Voltage: 12.9 kV" indicates a distribution-level interconnection is planned, not a direct transmission connection.
• Recommended Likely Interconnection Voltage: The project's stated "IX Voltage: 12.9 kV" clearly points to a distribution-level interconnection. This is typical for distribution-scale BESS projects (≤5MW). The 12.9 kV is a common primary distribution voltage in ComEd's service territory.
• Estimated Interconnection Cost Range and Timeline: Given the 1.9-mile distance to the substation and a 12.9 kV distribution interconnection, costs could range from $500,000 to $1,500,000+, depending on the need for feeder upgrades, new line construction, and substation modifications. The timeline for ComEd's interconnection process, including studies (System Impact Study, Facilities Study), typically ranges from 18 to 36 months, especially for projects requiring significant upgrades or in congested areas.
• Utility-Specific IX Process and Typical Queue Times: The interconnecting utility is Commonwealth Edison (ComEd), inferred from the transmission line owner. ComEd has a well-defined interconnection process for distributed generation, but their queue can be lengthy, and studies can be complex. Understanding the specific feeder configuration and available capacity from the Quarry substation is crucial.
• Likely Feeder Configuration: The 12.9 kV interconnection voltage suggests connection to a distribution feeder originating from the Quarry substation. Further investigation is needed to identify the specific feeder, its current loading, available capacity, and any existing distributed generation that could impact interconnection.

4. Regulatory & Zoning Analysis

• Authority Having Jurisdiction (AHJ) and Type: The AHJ is the "City of Chicago," a municipal authority. This means local ordinances and permitting processes will govern the project.
• Current Zoning for BESS Compatibility: The property is zoned "Industrial (General)" and "PMD-8 (Planned Manufacturing District)." Industrial zoning is generally highly favorable for BESS projects, as they are considered industrial uses. PMD-8 districts are specifically designed to preserve and promote industrial activity. This is a strong positive for BESS compatibility.
• Recommended Permitting Pathway: While industrial zoning is good, BESS is a relatively new technology. It is unlikely to be "by-right" without specific BESS provisions in the Chicago zoning code. The most probable pathway will be a Special Use Permit (SUP) or a Planned Development (PD) amendment, especially if the project exceeds certain thresholds or requires specific design considerations. A variance is less likely given the industrial zoning, but could be pursued if minor deviations from code are needed.
• Known Setback Requirements: Setback requirements for BESS in Chicago are "Unknown." This is a critical piece of information. Typical setbacks can range from 20-100 feet from property lines, residential zones, or public rights-of-way, significantly impacting the usable area on the 2.68-acre parcel. This requires immediate investigation of Chicago's specific BESS or industrial use setback ordinances.
• State/County Regulations: Illinois has state-level regulations for BESS, including fire safety standards (e.g., NFPA 855 adoption) and environmental permitting (e.g., IEPA). Cook County may also have specific requirements, though Chicago's municipal code typically supersedes county zoning within its limits.
• Moratorium or Restriction Risks: Any known moratoriums or restrictions on BESS development in Chicago are "Unknown." While Chicago is generally progressive, local communities can sometimes impose temporary restrictions. This requires verification with the Chicago Department of Planning and Development.

5. IRA/ITC Incentive Analysis

• Opportunity Zone Eligibility: The property is "No" for Opportunity Zone eligibility. This means no additional 10% ITC adder from this category.
• Energy Community Status: The property is designated as an "Energy Community: Yes — Fossil Fuel Employment (FFE Area)." This is a significant positive, qualifying the project for a 10% ITC adder. This enhances project economics considerably.
• Low-Income Community Qualification: The property is "No" for Low-Income Community qualification. This means no additional 10% or 20% ITC adder from this category.
• Calculate Potential Cumulative ITC Adder Percentage: Based on the current data,