Streamlining large scale photovoltaic arrays for utility interconnection

This paper provides an analysis of the feasibility of moving large scale photovoltaics (PV) closer to grid parity by reducing significant balance of system costs associated with medium voltage grid interconnection. Inverter costs have been reduced considerably over the last few years, reducing one of the larger costs in the interconnection of large scale systems. This research focuses on the medium voltage interconnection piece of the puzzle, developing a cost and equipment comparison based upon two divergent approaches currently acceptable to utilities in interconnecting such systems. The first being based on the Pennsylvania Electric Co. interconnection standards for new service, and the second is based on Atlantic City Electric´s overhead standards for new service. This research explores the noteworthy differences between these systems, and their effects on making large scale PV power plants more economic.