// Risk Intelligence
| Risk Score | 8 / 10 High |
| Facility Type | ⚡ Power Plant / Substation |
| Operator / Branch | PJM Interconnection |
| Host County | Montgomery County PA |
| Nearest City | Washington DC |
| Primary Risk Radius | 50 miles |
// Strategic Significance
PJM Interconnection manages the largest competitive wholesale electricity market in the world — the power grid serving 65 million people across 13 states and Washington DC from Illinois to New Jersey. PJM coordinates the transmission of electricity for one quarter of the US population and manages over 185000 miles of transmission lines. A coordinated attack or failure of the PJM system would cause blackouts affecting more Americans than any other single grid operator.
// Civilian Impact Assessment
A major PJM grid failure would plunge 65 million people in 13 states into darkness — the largest power outage in US history. The 2003 Northeast Blackout — which affected 55 million people — was triggered by a software bug in an Ohio utility. Extended PJM outages during extreme heat or cold would rapidly become fatal for vulnerable populations across the mid-Atlantic Midwest and Southeast. Financial systems hospitals water treatment and communications all depend on PJM grid stability.
// Evacuation & Shelter Guidance
Residents across the 13-state PJM region should maintain emergency power backup capability. A multi-day grid failure is a realistic scenario — store food and water that does not require refrigeration or electrical preparation. Know your local warming or cooling center locations. Battery backup systems solar with battery storage and generators provide resilience. Monitor FEMA and state emergency management broadcasts during any regional grid emergency.
// Recommended Preparedness Gear
Essential preparedness items for residents within the 50-mile risk zone of PJM Interconnection Grid Control PA.
72-Hour Emergency Food Kit View on Amazon → Water Filtration System View on Amazon → Portable Generator View on Amazon →* ThreatMap USA participates in the Amazon Associates Program.