Nashville Solar and Battery FAQs:
Answers From a Local Installer

One Tesla Powerwall 3 typically covers essential loads like the fridge, freezer, lights, Wi-Fi and a gas furnace blower or small mini-split for roughly 12 to 24 hours. With solar on the roof, it recharges during the day and keeps going longer.

We wire the essentials to a dedicated backup panel so the battery is not trying to run the whole house in an ice storm.

A Tesla Powerwall 3 runs about $15,400 installed for 13.5 kWh with a 10-year warranty. Enphase IQ Batteries run $12,000 – $18,000 installed in 5 or 10 kWh units with a 15-year warranty.

The homeowner tax credit that used to cover batteries ended after 2025, so price backup on what an outage costs you.

Yes, for the essentials. During Winter Storm Fern in January 2026, NES outages peaked at about 230,000 customers, about half of NES customers, and nearly all power took about 13 days to restore.

Middle Tennessee sees roughly 5 to 7 outage-causing severe weather events a year, and a battery that solar recharges each day can carry essential circuits through many of them.

If your roof has only a few years left, yes. Never put a 25-year solar array on a roof near the end of its life, because removing and reinstalling the array for a later re-roof typically costs $3,000 – $6,000.

Doing roof and solar as one project typically saves $2,000 – $5,000 in shared permits, wiring, crew and scaffolding, and takes about 2 to 3 weeks.

Usually, yes. On standing seam metal, panels attach with S-5! style clamps on the seams, so there are no roof penetrations.

A shingle roof needs flashed, lagged mounts, often 40 to 80 penetrations on a typical array, and the shingles may wear out before the panels do. The Metal Roofers can install the metal roof first, then our team adds the solar.

Not as a homeowner. The Section 25D credit ended for systems installed after December 31, 2025, under the One Big Beautiful Bill Act.

Businesses can still use the Section 48E credit if new solar is placed in service by December 31, 2027, battery storage is not held to that deadline, and leased systems may carry the credit for their owner. Confirm with a tax professional.

Not the way net metering states do. Tennessee is TVA territory with no traditional 1-for-1 net metering, and TVA retired its old Green Power Providers buyback.

NES buys eligible excess solar through NESolar Savings and NESolar Connect, limited programs with specific terms and caps, so we size systems for self-consumption, not export. Middle Tennessee Electric, which serves Williamson, Wilson, Rutherford and Cannon counties, runs under the same TVA rules.

Not ones to count on. USDA sharply restricted solar in its REAP grant program, including a 50 kW cap on ground-mounted systems, and farm and solar groups sued over the changes in September 2026.

Farms can still use the Section 48E credit and depreciation on the 2027 schedule, and we never promise REAP funding.

The paperwork takes longer than the install. Permits and utility interconnection usually take 2 to 6 weeks, then a rooftop install takes 1 to 3 days on site.

With batteries and panel work, plan on 2 to 4 days, and roof plus solar together takes about 2 to 3 weeks.

Then we will tell you rooftop solar is not a fit. Big oaks over the best roof plane in East Nashville, Inglewood or Sylvan Park can cut production more than any cloudy week.

A ground-mounted array, a detached garage or barn roof, or a battery on its own for outage backup may still make sense.

An owned, paid-off system usually transfers with the house like any other improvement. A loan secured by the home or a lease has to be paid off or transferred at closing.

We give you as-built drawings, warranty records and monitoring access to hand to the buyer, and the buyer gets the same local team for service.