infrastructure.org: electrical power systems

Electrical power systems are already operating under extremely high loads, especially during times of hot weather. Availability of electrical power is commonly disrupted by natural disasters and by other equipment damage situations (which may include problematic excavations, motor-vehicle accidents, animal and plant activity, and mechanical breakdown, in addition to intentional destruction).

• power grid vulnerabilities (from the National Security Telecommunications Advisory Committee)
• system disturbances (from the North American Electric Reliability Council)
• efficiency factors in reliability (from the Alliance to Save Energy)
• market factors in reliability (from Environmental Media Services)