In short: Gallatin has about 52,500 people and sits in Sumner County. Nashville Electric Service, Cumberland Elec Member Corp and Tri-County Elec Member Corp (TN) serves different parts of Sumner County, so your utility depends on your address; their 2024 home averages range from 12.33¢ to 13.47¢ per kWh (EIA). FEMA rates Sumner County tornadoes “relatively high”. Rooftop solar here makes roughly 1,240 kWh a year per kW of panels by our estimate, which is about average for the U.S..
This page covers what is local to Gallatin: its utility, outage records, sunshine, weather risks and charging. Statewide rules such as net metering, incentives and electrician licensing are in our Tennessee energy guide.
Gallatin at a glance
- Place: Gallatin, Sumner County, Tennessee; about 52,489 residents (Census Bureau estimate, July 2024).
- Utility: Nashville Electric Service (city-owned). Homes paid an average 13.47¢ per kWh in 2024 (EIA-861); the average customer lost 87 minutes of power on normal days, with 1.0 interruptions a year (utility-wide, not just Gallatin).
- Utility: Cumberland Elec Member Corp (member-owned cooperative). Homes paid an average 12.99¢ per kWh in 2024 (EIA-861); the average customer lost 130 minutes of power on normal days and 220 counting major storms, with 2.0 interruptions a year (utility-wide, not just Gallatin).
- Utility: Tri-County Elec Member Corp (TN) (member-owned cooperative). Homes paid an average 12.33¢ per kWh in 2024 (EIA-861); the average customer lost 312 minutes of power on normal days and 390 counting major storms, with 3.8 interruptions a year (utility-wide, not just Gallatin).
- Sun: 4.23 kWh per square meter per day on average, from 1.92 in December to 6.34 in June (NASA POWER). Our rough estimate: about 1,240 kWh a year per kW of panels.
- Climate: about 1,480 cooling degree-days and 4,070 heating degree-days a year (base 65°F, NASA POWER), so heating and cooling both matter.
- Top hazards in Sumner County: tornadoes “relatively high”, strong winds “relatively high” and cold waves “relatively high” (FEMA National Risk Index; overall county risk rated “relatively moderate”).
- Public charging: 21 ports at 9 locations in Gallatin, none of them DC fast (AFDC, October 20, 2026).
Your utility and what it means
Nashville Electric Service is a city-owned utility and served about 417,640 home customers in 2024; its 13.47¢ average was close to the 13.71¢ statewide average for July 2026. Cumberland Elec Member Corp is a member-owned cooperative utility and served about 100,585 home customers in 2024; its 12.99¢ average was below the 13.71¢ statewide average for July 2026. Tri-County Elec Member Corp (TN) is a member-owned cooperative utility and served about 24,824 home customers in 2024; its 12.33¢ average was below the 13.71¢ statewide average for July 2026. Those are utility-wide averages, not a quote for your address; your own bill is the real number.
For reliability, Tri-County Elec Member Corp (TN) reported 312 minutes per customer without major storms in 2024, more than the statewide figure of 160 (EIA-861). Utility-wide numbers hide a lot: a home at the end of a long rural line usually has more outages than the average.
Net metering, export rates and incentives are set at state level and by each utility. Start with the Tennessee guide and then ask your utility for its current interconnection steps before you sign anything.
Backup power in Gallatin
- Tornadoes (relatively high): Tornado-season storms cut power quickly. A battery that switches on by itself, or a portable generator ready to go, covers the first night; sirens and weather radios need power too.
- Strong winds (relatively high): High winds knock out lines on ordinary days. A battery or portable power station handles the common short outages; add a generator for multi-day repairs.
- Short outages: a portable power station covers phones, Wi-Fi, a CPAP and lights; a home battery switches over automatically.
Size your setup with the generator sizing tool and the battery backup calculator, and compare options in backup power. Generator safety (CPSC): outdoors only, at least 20 feet from the house, exhaust away from doors and windows, never in a garage, and battery-powered carbon monoxide alarms inside. A licensed electrician should install any transfer switch, with a permit; see generator installation.
Solar in Gallatin
By our rough estimate each kW of panels makes about 1,240 kWh a year in Gallatin (NASA sunshine data times 365 days times 0.80 for system losses). Valued at Nashville Electric Service’s 2024 average of 13.47¢, that is about $167 a year per kW if all of it offsets your own use (an estimate, not a promise). Production swings with the seasons: June is the sunniest month at 6.34 and December the dimmest at 1.92, a 3.3-to-1 gap, so a battery or a bigger system helps in winter.
Check your own roof with the solar potential tool, see solar costs and net metering vs net billing, and read the steps in solar installation. Hail and storm exposure are worth raising with installers and your insurer.
Batteries and EV charging
A home battery earns its place when outages are frequent, when your utility pays little for exported solar, or when evening prices are high; compare in home batteries and battery costs. Gallatin has 21 public charging ports in the federal station list (none of them DC fast), but home charging is cheaper and easier: see the EV charging cost calculator and EV charger installation.
Drive on another fuel? See every alternative fuel station in Gallatin: hydrogen, propane, natural gas, E85 ethanol, biodiesel and renewable diesel.
Permits and inspections
Solar, generator transfer switches and EV chargers normally need an electrical permit from the Gallatin building or permitting department, or from Sumner County if you live outside city limits, and often a utility interconnection approval. We have not verified a local permit page for Gallatin, so check the city and county websites or ask your electrician, who will know the process. Hire only a licensed electrician or installer; the Tennessee guide lists the state licensing rules.
Nearby guides
More local guides: Hendersonville, Lebanon, Nashville-Davidson and Smyrna, or the whole Tennessee energy guide.
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Gallatin energy FAQ
Who is my electric company in Gallatin?
Nashville Electric Service, Cumberland Elec Member Corp and Tri-County Elec Member Corp (TN) all serve parts of Sumner County. Which one serves you depends on your street, so check the top of your bill. Their 2024 home price averages differ (Nashville Electric Service 13.47¢, Cumberland Elec Member Corp 12.99¢, Tri-County Elec Member Corp (TN) 12.33¢) so it matters for solar math.
How much power will solar make in Gallatin?
About 1,240 kWh a year per kW of panels by our estimate, so a 6 kW system would make roughly 7,440 kWh. Shade, roof direction and tilt change this; run your address through the solar potential tool for a better number.
Is a generator or a battery better for tornadoes in Sumner County?
It depends how long the outage lasts. A battery is quiet, automatic and good for short outages and for pairing with solar; a standby generator keeps going as long as it has fuel, which suits multi-day events. Many homes use a battery for everyday outages and add a generator for the rare long one.
Do I need a permit for solar or a generator in Gallatin?
Almost always an electrical permit for a transfer switch, solar or an EV charger, issued by the city or county where you live. Your licensed electrician or installer normally pulls it. Never connect a generator to your house wiring without a transfer switch.
Sources: EIA Form 861 (2024) for utility prices and outages; NASA POWER climatology (2001 to 2025) for sun and degree-days; FEMA National Risk Index for county hazards; AFDC station locator for public charging; Census Bureau for population. Estimates are ours and are not promises; see our editorial policy. Prices and programs change, so check each program page.