NES bills most Nashville–Davidson residential accounts on published residential schedules that combine a monthly service (customer) charge that scales with usage tiers, a grid access component, and per-kWh energy charges that include a base energy rate plus NES’s monthly Fuel Cost Adjustment tied to TVA wholesale power costs—always use the effective rate sheet for the billing month you are modeling.
NES is independent of Metro Water Services; outages, deposits, and budget billing programs are administered through NES channels, while TVA operates the underlying bulk transmission and generation portfolio that feeds NES’s system.
Adjacent counties or small enclaves may occasionally overlap other distributors—if your bill header is not NES, follow the named utility’s tariff rather than this Nashville-centric summary.