Ballpark Lab
Tennessee solar estimate

Solar Panel Cost in Tennessee (2026)

Installed solar in Tennessee runs about $2.55 per watt — roughly 1% below the national average of $2.58/W. With the federal residential tax credit (25D) gone as of 2026, payback here rests on a $0.12/kWh power price and 4.7 daily peak sun hours.

Worked example: a typical $150/month home in Tennessee

A $150/month electric bill in Tennessee works out to about 15,000 kWh a year. Sizing a cash-purchase system to cover 100% of that:

System size
11.2 kW
Panels
28
Annual offset
102%
Gross cost
$31,060
Federal credit (25D)
$0
Expired 12/31/2025 — $0
State incentive
$0
Net cost
$31,060
Payback
16.6 yr
25-year savings
$22,616

Last updated June 30, 2026

Tennessee solar numbers

Installed price
$2.55 / watt
Electricity price
$0.12 / kWh
Peak sun hours
4.7 hrs/day
State incentive
0%
Net-metering value
80% of retail

Local context: TVA territory pays below-retail for exports, so Tennessee solar leans on self-consumption.

Tennessee credits exported power at about 80% of the retail rate (NEM 3.0-style), so a battery to store and self-use your generation usually improves the return here.

Estimate your own Tennessee system

Adjust the bill, ownership, and battery options below — it's pre-set to Tennessee's pricing and sun hours.

Tell us about your home

Average monthly electric bill$210
Estimated system cost
$36,784$47,776
15.6 kW39 panels
Low $37kMost likely ~$42,280High $48k
Federal tax credit
— expired Dec 2025, we won't pretend otherwise
$0
State & utility incentives
$0
Est. annual savings
$2,055
Payback period
~16.3 yr
Net cost
$37k–$48k
25-year net savings
+$32,483
iA ballpark estimate for planning — not a final quote.
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