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Through a network that consists of hundreds of low-cost monitors that plug into standard 110-volt outlets, GridEye can play a role in ensuring the reliability of the nation's power grids. The system, developed by researchers at Oak Ridge National Laboratory, provides real-time information about dynamic responses to conditions and can provide warnings of impending failures such as the Northeast Blackout of 2003. The monitors, referred to as frequency disturbance recorders, are installed in offices, school buildings and residences. "ORNL's most recent deployment of GridEye sensors focuses on portions of the grid where high penetration of renewables is planned," said Yilu Liu of the Energy and Transportation Science Division.