This issue concerns generators that may currently offer more flexible parameters on price schedules than on cost schedules. For example, a unit may offer a four hour minimum run time on a price schedule and a five hour minimum run time on the corresponding cost schedule for the same unit. As the PLS matrix is intended to reflect the physical capabilities of units, the result is that such units currently are not offered on the most flexible parameter. The corresponding result may be increased operating reserve charges paid by market participants.