In short: Mount Juliet has about 44,100 people and sits in Wilson County. Nashville Electric Service and Middle Tennessee E M C serves different parts of Wilson County, so your utility depends on your address; their 2024 home averages range from 11.76¢ to 13.47¢ per kWh (EIA). FEMA rates Wilson County winter weather “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 Mount Juliet: 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.
Mount Juliet at a glance
- Place: Mount Juliet, Wilson County, Tennessee; about 44,066 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 Mount Juliet).
- Utility: Middle Tennessee E M C (member-owned cooperative). Homes paid an average 11.76¢ per kWh in 2024 (EIA-861); the average customer lost 42 minutes of power on normal days and 49 counting major storms, with 0.9 interruptions a year (utility-wide, not just Mount Juliet).
- 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 1,610 cooling degree-days and 3,810 heating degree-days a year (base 65°F, NASA POWER), so heating and cooling both matter.
- Top hazards in Wilson County: winter weather “relatively high”, cold waves “relatively moderate” and tornadoes “relatively moderate” (FEMA National Risk Index; overall county risk rated “relatively low”).
- Public charging: 23 ports at 2 locations in Mount Juliet, 11 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. Middle Tennessee E M C is a member-owned cooperative utility and served about 307,370 home customers in 2024; its 11.76¢ 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, Nashville Electric Service reported 87 minutes per customer without major storms in 2024, less 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 Mount Juliet
- Winter weather (relatively high): Winter storms and cold snaps combine outages with heating demand. Plan for the furnace blower or heat pump, not just lights, and keep a fuel supply you can reach in snow.
- Cold waves (relatively moderate): Cold waves raise demand and can cause both outages and frozen pipes. Keep at least one room warm with a battery-run heater circuit or a generator.
- 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 Mount Juliet
By our rough estimate each kW of panels makes about 1,240 kWh a year in Mount Juliet (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.
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. Mount Juliet has 23 public charging ports in the federal station list including 11 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 Mount Juliet: 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 Mount Juliet building or permitting department, or from Wilson County if you live outside city limits, and often a utility interconnection approval. We have not verified a local permit page for Mount Juliet, 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, La Vergne and Gallatin, or the whole Tennessee energy guide.
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Mount Juliet energy FAQ
Who is my electric company in Mount Juliet?
Nashville Electric Service and Middle Tennessee E M C both serve parts of Wilson 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¢, Middle Tennessee E M C 11.76¢) so it matters for solar math.
How much power will solar make in Mount Juliet?
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 winter weather in Wilson 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 Mount Juliet?
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.