Tennessee solar calculator

Live production from NLR (formerly NREL) PVWatts V8. Tennessee is one of only ~4 US states with NO statewide net metering, and exports are essentially worthless. TVA serves the entire state via Local Power Companies (LPCs); TPUC does not mandate net metering. TVA's Dispersed Power Production (DPP) credits excess generation at avoided cost ~$0.02/kWh — and most LPCs charge a MONTHLY FEE for DPP participation that often ZEROS OUT the credit entirely. Self-consumed solar offsets full retail (~$0.12/kWh — TN consumption is high, AC-heavy summer, electric heat). The old GPP (Green Power Providers) premium-rate program CLOSED to new enrollments at end of 2019 — A1SolarStore, ecowatch, SmokeyMountain still describe GPP as live; outdated. Only Kingsport Power / Appalachian Power (NOT TVA, northeast TN) has real net metering. Federal §25D = $0 (OBBBA repeal). Sales tax (~9.5% combined) NOT EXEMPT for residential — ~$3,000- 4,000 added cost (among LARGEST in our verified set). Property tax PARTIAL exemption — Green Energy assessment at 12.5% of value (not 0%; saves ~$225/yr). NO state income tax credit (TN has no income tax on wages). NO SREC, NO RPS. NO statewide battery rebate — but battery is the strongest case here, with $0.10 arbitrage gap (retail $0.12 vs ~$0 effective export). Typical solar- only payback 15-20+ years — among the WORST US (EnergySage cites $1,879 of 25-year savings on a 13.86 kW full install). The case for TN solar is self-consumption + battery + resilience, NOT export. Defaults: south-facing roof mount, 20° tilt, 14% losses.