The acronym for utility distribution company, an entity with its own distribution system for the delivery of energy to and from the ISO-controlled grid. The UDC provides regulated, retail service to eligible end-use customers who are not yet eligible for direct access, or who choose not to arrange services through another retailer.
Utility Distribution Company. A company that operates and maintains the electric system to deliver energy to the end user. It also provides "Standard offer" – the traditional package of electric service at regulated prices for customers who choose not to participate in the competitive market.
daily average portion of a refinery's rated throughput capacity utilized for a given period. The closer the UDC is to the refinery's rated capacity, the more efficient the refinery is.