⚡ 18400 LE CLAIRE AVE

Site Diligence Analysis: 18400 LE CLAIRE AVE, Cook County, IL

Date: October 26, 2023
Analyst: Senior BESS Site Evaluation Analyst, Sunland America Corp.
Property Address: 18400 LE CLAIRE AVE, Cook County, IL
Total Acres: 2.13

1. Site Access & Topography

• Road Access Quality & Equipment Delivery Feasibility: The provided data states "Road Access: Unknown" and "POI Access: Unknown." This is a critical gap. For a BESS project, robust road access is paramount for the delivery of heavy equipment such as transformers, battery containers, and construction materials. We must verify if Le Claire Ave is a paved public road, its width, load-bearing capacity, and any potential weight restrictions. Without this information, the feasibility of delivering oversized and overweight components remains a significant unknown and a high-risk item.
• Likely Terrain Characteristics: While specific topographic data is not provided, Cook County, Illinois, is generally characterized by flat to gently rolling terrain. However, a detailed topographic survey is required to confirm the exact elevation changes, slopes, and potential grading requirements for the 2.13-acre parcel. Significant grading can add substantial costs and environmental permitting complexities.
• Heavy Equipment Access Assessment: The ability to access the site with heavy equipment is entirely contingent on the quality of Le Claire Ave and the internal site conditions. If the road is unpaved, narrow, or has poor load-bearing capacity, significant off-site and on-site road improvements would be necessary, adding substantial cost and timeline delays. This needs immediate verification through a site visit and civil engineering assessment.
• Access Easement Concerns: No information on access easements is provided. A title report and survey will be necessary to identify any existing easements (e.g., utility, ingress/egress) that might encumber the property or restrict access, and to determine if new easements are required for interconnection or site access.

2. Environmental Constraints

• FEMA Flood Zone Designation: The FEMA Flood Zone is "Unknown." This is a critical environmental constraint. BESS facilities must ideally be located outside of the 100-year floodplain (e.g., Zone AE or A). If the site is found to be within a flood zone, significant flood mitigation measures (e.g., elevated equipment pads, floodwalls, specialized drainage systems) would be required, drastically increasing project costs, engineering complexity, and permitting timelines. This requires immediate desktop analysis and potential flood study.
• Wetlands Presence and Setback Requirements: The presence of "Wetlands: Unknown" is another major concern. Wetlands are federally protected under the Clean Water Act and typically require extensive permitting from the U.S. Army Corps of Engineers (USACE) and state environmental agencies. Wetland delineation, avoidance, and potential mitigation (if avoidance is not feasible) can lead to significant project delays, reduced buildable area, and substantial costs. Setback requirements from wetlands can further constrain the already small 2.13-acre parcel.
• Critical Habitat / Endangered Species Risk: The data indicates "Critical Habitat: None" and "Protected Areas: None." This is a positive finding, as it suggests a lower risk of encountering endangered species or critical habitat issues, which can otherwise trigger lengthy federal and state permitting processes and potential project redesigns.
• Brownfield/Superfund Status: The data states "Brownfield/Superfund: None within ~2 miles." This indicates a low risk of encountering hazardous waste contamination on or near the site, which is positive for environmental due diligence and buildability. However, it also means the project would not qualify for the IRA brownfield bonus ITC adder.
• Chesapeake Bay Critical Area Implications: The data correctly notes "Chesapeake Critical Area: N/A (non-MD)." This is not applicable to Illinois, so no specific implications arise from this designation.
• Pipeline Proximity Safety Considerations: The data states "Pipeline Proximity: None within ~3 miles." This is a significant positive, as proximity to high-pressure gas or hazardous liquid pipelines can impose substantial safety setbacks, risk assessments, and coordination requirements with pipeline operators, which can severely limit buildable area and increase project complexity.

3. Grid Infrastructure & Interconnection

• Nearest Substation: The nearest substation's distance and maximum voltage are "Unknown." This is a major data gap for distribution-scale projects (≤5MW), which typically interconnect at a nearby substation. Without this information, assessing the feasibility and cost of a distribution interconnection is impossible.
• Nearest Transmission Line: A 138kV transmission line owned by COMMONWEALTH EDISON CO is located at 0.1 mi. This is an excellent proximity for a potential transmission-level interconnection, especially for larger utility-scale projects. Commonwealth Edison (ComEd) is the likely interconnecting utility.
• Recommended Likely Interconnection Voltage: Given the project focus on distribution-scale (≤5MW) and utility-scale, and the very close proximity to a 138kV transmission line, a transmission-level interconnection is a strong possibility, particularly if the project scales beyond 5MW. However, for a ≤5MW project, distribution interconnection is generally preferred due to lower complexity and cost, but the lack of substation data prevents a definitive recommendation. We must investigate both options.
• Estimated Interconnection Cost Range and Timeline: Without knowing the Point of Interconnection (POI) (substation or specific transmission tap point) and the required system upgrades, estimating costs is highly speculative. For a transmission interconnection at 0.1 mi, costs could range from $1M to $5M+ depending on required upgrades to the 138kV line, new switchyard, and potential network upgrades. Timelines for transmission interconnection with ComEd are typically 3-5+ years due to their lengthy queue and study processes. For a distribution interconnection, costs could be lower ($500k-$2M) but still depend heavily on substation capacity and feeder upgrades, with timelines often 2-4 years.
• Utility-Specific IX Process and Typical Queue Times: The interconnecting utility is almost certainly Commonwealth Edison (ComEd). ComEd has a well-defined but often lengthy interconnection process, with typical queue times for studies and construction ranging from 2 to 5+ years, especially for transmission-level projects or those requiring significant system upgrades. Early engagement with ComEd is crucial.
• Likely Feeder Configuration: This is "Unknown" due to the lack of substation and feeder map data. This information is critical for distribution-level interconnection to assess available capacity, existing load, and potential backfeed issues.

4. Regulatory & Zoning Analysis

• Authority Having Jurisdiction (AHJ) and Type: The AHJ is likely a dual jurisdiction: Cook County and an unnamed municipality (given the specific address, it's likely within a village or city in Cook County). This means navigating two sets of regulations and potentially two permitting processes.
• Current Zoning for BESS Compatibility: The property is zoned "Residential - Single Family Residential (Code: -)" and "R4 (Regrid)." This is a severe constraint. BESS facilities are typically classified as industrial, utility, or heavy commercial uses, which are fundamentally incompatible with residential zoning.
• Recommended Permitting Pathway: Given the residential zoning, a "by-right" permitting pathway is highly improbable. The project would almost certainly require a Special Use Permit (SUP) or Conditional Use Permit (CUP) from the municipality/county. This process involves public hearings, discretionary approval, and significant community engagement. A rezoning application is another, even more challenging and lengthy, pathway