Reactive power is the crucial component of electric power (the product of voltage and current) which regulates voltages and plays a key role in electric power grid operation. It is created by capacitors (source) and inductors (sink) as they stabilize voltage and current respectively. It must be supplied to most types of magnetic equipment (i.e., motors and transformers) for proper operation. Without sufficient reactive reserves and the capability to transmit it, the power grid could experience a voltage collapse and result in a blackout. Regions of the country are experiencing problems called local or "micro" voltage collapses which are caused by the operation of air conditioning loads and other induction equipment. These micro-voltage collapses could cascade into large scale blackouts causing the industry and U.S. economy billions of dollars. ORNL is working with industry to develop solutions
that will ensure reliable delivery of power and other benefits.
