Nev. Rev. Stat. § 704B.020
“Ancillary services” defined.
“Ancillary services” means those generation services that:
1. Are necessary to support the transmission of energy and capacity from resources to loads while maintaining reliable operation of the transmission system of the electric utility; and
2. Are defined and established in applicable transmission tariffs on file with the Federal Energy Regulatory Commission.
(Added to NRS by 2001, 3223)