// Risk Intelligence
| Risk Score | 8 / 10 High |
| Facility Type | ⚡ Power Plant / Substation |
| Operator / Branch | Ameren Illinois |
| Host County | Moultrie County IL |
| Nearest City | Pepperell MA |
| Primary Risk Radius | 5 miles |
| Secondary Risk Radius | 30 miles |
// Strategic Significance
The Sullivan Illinois transmission substation is identified in grid reliability studies as one of the most critical single nodes in the Illinois transmission system. A failure at Sullivan would cascade through the central Illinois grid affecting Chicago and surrounding areas. The substation sits in rural Moultrie County with minimal physical security and extended law enforcement response times. DHS grid security assessments have flagged rural high-voltage substations as the highest priority terrorism vulnerability in the US power grid because they combine critical strategic value with minimal physical protection.
// Civilian Impact Assessment
Moultrie County with 14,000 residents but impact extends to Chicago metro with 9 million residents. Rural location means 20-30 minute law enforcement response. A Sullivan failure cascades through central Illinois to Chicago. Specialized extra-high-voltage transformer replacement takes 12-18 months. No redundant bypass routing exists.
// Evacuation & Shelter Guidance
IL Route 32, IL Route 121. Moultrie County Emergency Management and Ameren coordinate substation attack and grid emergency protocols.