Solar resource
Your solar production in Nashville
4.5 avg peak sun hours/day
Monthly avg solar radiation (kWh/m²/day) — Nashville, TN. Bars update to show estimated kWh production when you use the calculator above.
Utility rate
Nashville Electric Service (NES) electricity rate
$0.1074/kWh residential
- Utility
- Nashville Electric Service (NES)
- Residential rate
- $0.1074/kWh (blended)
NES (Nashville Electric Service) is a TVA-backed municipal utility, not an investor-owned utility. TVA's distributed generation policy means that residential solar customers do NOT receive standard full-retail net metering. Excess solar power exported to the grid under the NES/TVA interconnection framework is compensated at TVA's avoided-cost rate — significantly less than the retail rate. Nashville solar economics are therefore driven almost entirely by self-consumption (avoiding NES purchases during daylight hours), not by export value. Model the value of a Nashville system around direct consumption first; treat any export credit as secondary upside at best.
Affiliate slot
Ready to go solar?
Compare quotes from vetted Nashville solar installers — no obligation, no sign-up required to see prices.
Incentives
Available solar incentives in Nashville, TN
Federal + state + utility
| Incentive | Type | Value | Scope |
|---|---|---|---|
| Federal Solar Investment Tax Credit (ITC) | Tax Credit | 30% of system cost | Federal |
| Tennessee — No State Income Tax (context note) | Exemption | N/A — no state income tax credit exists because TN has no personal income tax | State |
| Tennessee Sales Tax Exemption for Solar Equipment | Exemption | Potential exemption from TN state and local sales tax | State |
| NES/TVA Residential Solar Interconnection | Net Metering | Grid-tied interconnection available; export credited at TVA avoided-cost rate (not full retail) | Utility |
Incentive amounts and eligibility rules change. Verify current terms with your installer and a tax professional before installation.
System cost
Cost breakdown (6 kW default)
- Gross system cost
- $22160
- Federal ITC (30%)
- −$6648
- Net system cost
- $15,512
- Installed cost per watt
- $2.77/W
Lawrence Berkeley National Laboratory Tracking the Sun 2024 — Southeast median installed cost benchmark for residential systems 3–10 kW.
Payback & long-term value
25-year outlook
- Annual savings (yr 1)
- $1,149
- Simple payback period
- 13.5 years
- 25-year net savings
- $19300
- Assumed annual rate increase
- 2.0%/year
25-year estimate uses flat electricity rate for conservative baseline. Accounting for 2.0% annual rate increases, lifetime savings increase substantially.
Affiliate slot
Shop solar equipment
Browse solar panels, inverters, and mounting hardware for DIY or installer supply purchases.
How it works
How solar savings work in Nashville
- Your panels capture Nashville sunlight Using NREL PVWatts inputs for Nashville (36.1627°N, 86.7816°W), an 8 kW premium roof-mount system at 20° tilt and 14% losses produces about 10,700 kWh per year. Nashville's modeled solar resource averages roughly 4.50 peak sun hours per day — solid for a mid-South metro, though somewhat less than Atlanta due to the Tennessee Valley's cloud patterns.
- The inverter converts DC to usable home power The inverter converts solar DC output into AC electricity your house can use directly. Premium monocrystalline modules are the default here because they maximize output on a given roof area, which matters when system sizing is constrained by self-consumption rather than export.
- You offset NES purchases — self-consumption is the primary value driver Every kilowatt-hour your system produces while the home is consuming power avoids a purchase from Nashville Electric Service. Using a 2024 Tennessee residential proxy rate of 10.74¢/kWh, an 8 kW Nashville baseline saves about $1,149 per year. This is the core economic mechanism — NES/TVA's export compensation structure is not comparable to full-retail net metering, so self-consumption is where the savings come from.
- TVA/NES export: credit at avoided cost, not retail Nashville homeowners should not plan around standard full-retail net metering. NES follows TVA's Distributed Power Production Program, where excess solar exported to the grid earns TVA's avoided-cost rate — materially lower than the 10.74¢/kWh retail rate. This is a TVA-wide policy, not an NES decision, and it is one of the clearest differentiators between Nashville solar economics and those of standard investor-owned-utility cities.
- You claim the federal ITC — no state credit exists On a modeled $22,160 installed cost, the 30% federal ITC is worth about $6,648, reducing net cost to roughly $15,512. Tennessee has no personal income tax, so there is no state solar income tax credit — the federal ITC is the only tax-credit incentive. A potential Tennessee sales tax exemption on equipment can add another $900–$1,300 in upfront savings if the project qualifies.
- Long-run savings depend on NES rate growth With current assumptions, the Nashville 8 kW baseline has simple payback around 13.5 years. TVA's historically low wholesale rates mean Nashville electricity has been cheap, which extends payback vs. higher-rate metros. However, TVA has signaled multi-year rate increases as it invests in grid modernization, which could shorten payback meaningfully over the system's 25-year life.
FAQ
Common solar savings questions for Nashville, TN
How much can I save with solar panels in Nashville, TN?
Using NREL PVWatts for an 8 kW premium roof-mount system in Nashville, the baseline output is about 10,700 kWh/year. At an estimated NES proxy rate of 10.74¢/kWh, that is about $1,149 in first-year bill savings, with a net post-ITC system cost near $15,512 and simple payback around 13.5 years. Twenty-five-year net savings are modeled near $19,300.
Does Nashville Electric Service offer net metering?
Not in the standard full-retail sense. NES is a TVA-backed municipal utility, and TVA's Distributed Power Production Program credits excess residential solar exports at TVA's avoided-cost rate rather than at the full retail rate. This is materially different from full-retail net metering and means Nashville solar economics hinge on maximizing self-consumption during daylight hours rather than banking export credits.
Does Tennessee offer a state solar tax credit?
No. Tennessee has no personal state income tax, which means there is no state solar income tax credit. The federal Investment Tax Credit (30% of installed cost, available through 2032) is the primary tax incentive for Nashville homeowners. A potential Tennessee sales tax exemption for qualifying solar equipment may provide upfront savings — verify current eligibility with your installer or the TN Dept. of Revenue.
How does TVA's involvement affect Nashville solar savings?
TVA is the wholesale power supplier for NES and sets the framework for how distributed solar interconnects with the grid across its 9-state service area. Because TVA compensates residential solar exports at avoided cost rather than retail rates, the standard net-metering math used for utilities like Duke Energy or Georgia Power does not apply in Nashville. Size your system to cover your daytime usage rather than to maximize exports.
How much does a solar system cost in Nashville?
An 8 kW system in Nashville is modeled at about $22,160 before incentives using a Southeast benchmark of $2.77/W installed. After the 30% federal ITC ($6,648), net cost is about $15,512. Actual quotes vary with roof complexity, equipment tier, and installer margin.
Is Nashville a good city for solar?
Nashville gets solid sun — about 4.5 peak sun hours per day on average — and federal incentives are strong. The main economic headwind is TVA's below-market export compensation, which limits the value of oversizing. A well-sized system focused on self-consumption still makes economic sense, particularly as TVA has signaled ongoing rate increases.
How many solar panels do I need for a Nashville home?
A Nashville home using about 900–1,200 kWh per month typically lands in the 6–9 kW range, which is roughly 15–23 premium panels at common residential wattages. Because export compensation is below retail, focus sizing on matching your daytime consumption rather than maximizing system output. Use the calculator with your actual bill to get a tailored estimate.
Do I need a permit to install solar panels in Nashville?
Yes. Nashville rooftop solar normally requires electrical and building permitting plus NES interconnection approval. Your installer typically handles those filings, but homeowners should confirm the project is permitted and inspected before the system is energized.
Sources
Data sources and freshness
- https://developer.nrel.gov/docs/solar/pvwatts/v8/
- https://api.eia.gov/v2/electricity/retail-sales/data/
- https://apps.openei.org/USURDB/
- https://www.nespower.com/
- https://www.tva.com/energy/our-power-system/renewable-energy/solar
- https://dsireusa.org/
- https://seia.org/state-solar-policy/tennessee-solar/
Related tools
More free homeowner tools
Disclaimer: This calculator provides estimates for informational purposes only — not financial or investment advice. Solar savings depend on actual shading, roof orientation, energy usage patterns, rate changes, and equipment performance. Consult a licensed installer and a tax professional before making purchasing decisions. Verify incentive eligibility with official sources. Data last verified 2026-04-17.