In short: Plymouth has about 78,600 people and sits in Hennepin County. Northern States Power Co – Minnesota, Connexus Energy and Wright-Hennepin Coop Elec Assn serves different parts of Hennepin County, so your utility depends on your address; their 2024 home averages range from 13.66¢ to 16.98¢ per kWh (EIA). FEMA rates Hennepin County cold waves “very high”. Rooftop solar here makes roughly 1,110 kWh a year per kW of panels by our estimate, which is on the modest side, so price and incentives matter more.
This page covers what is local to Plymouth: its utility, outage records, sunshine, weather risks and charging. Statewide rules such as net metering, incentives and electrician licensing are in our Minnesota energy guide.
Plymouth at a glance
- Place: Plymouth, Hennepin County, Minnesota; about 78,551 residents (Census Bureau estimate, July 2024).
- Utility: Northern States Power Co – Minnesota (investor-owned). Homes paid an average 16.98¢ per kWh in 2024 (EIA-861); the average customer lost 110 minutes of power on normal days and 309 counting major storms, with 1.1 interruptions a year (utility-wide, not just Plymouth).
- Utility: Connexus Energy (member-owned cooperative). Homes paid an average 13.66¢ per kWh in 2024 (EIA-861); the average customer lost 30 minutes of power on normal days and 181 counting major storms, with 0.3 interruptions a year (utility-wide, not just Plymouth).
- Utility: Wright-Hennepin Coop Elec Assn (member-owned cooperative). Homes paid an average 14.59¢ per kWh in 2024 (EIA-861); the average customer lost 24 minutes of power on normal days and 45 counting major storms, with 0.3 interruptions a year (utility-wide, not just Plymouth).
- Sun: 3.80 kWh per square meter per day on average, from 1.21 in December to 6.28 in July (NASA POWER). Our rough estimate: about 1,110 kWh a year per kW of panels.
- Climate: about 620 cooling degree-days and 8,010 heating degree-days a year (base 65°F, NASA POWER), so heating is the big load.
- Top hazards in Hennepin County: cold waves “very high”, tornadoes “very high” and hail “very high” (FEMA National Risk Index; overall county risk rated “relatively high”).
- Public charging: 126 ports at 29 locations in Plymouth, 29 of them DC fast (AFDC, October 20, 2026).
Your utility and what it means
Northern States Power Co – Minnesota is an investor-owned utility and served about 1,230,057 home customers in 2024; its 16.98¢ average was close to the 17.45¢ statewide average for July 2026. Connexus Energy is a member-owned cooperative utility and served about 134,095 home customers in 2024; its 13.66¢ average was below the 17.45¢ statewide average for July 2026. Wright-Hennepin Coop Elec Assn is a member-owned cooperative utility and served about 53,714 home customers in 2024; its 14.59¢ average was below the 17.45¢ 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, Northern States Power Co – Minnesota reported 110 minutes per customer without major storms in 2024, more than the statewide figure of 92 (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 Minnesota guide and then ask your utility for its current interconnection steps before you sign anything.
Backup power in Plymouth
- Cold waves (very high): 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.
- Tornadoes (very 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.
- Heating load: a winter outage can stop a furnace blower, boiler pump or heat pump. List what your heat needs to run before choosing a generator or battery.
- 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 Plymouth
By our rough estimate each kW of panels makes about 1,110 kWh a year in Plymouth (NASA sunshine data times 365 days times 0.80 for system losses). Valued at Northern States Power Co – Minnesota’s 2024 average of 16.98¢, that is about $188 a year per kW if all of it offsets your own use (an estimate, not a promise). Production swings with the seasons: July is the sunniest month at 6.28 and December the dimmest at 1.21, a 5.2-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. Plymouth has 126 public charging ports in the federal station list including 29 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 Plymouth: 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 Plymouth building or permitting department, or from Hennepin County if you live outside city limits, and often a utility interconnection approval. We have not verified a local permit page for Plymouth, so check the city and county websites or ask your electrician, who will know the process. Hire only a licensed electrician or installer; the Minnesota guide lists the state licensing rules.
Nearby guides
More local guides: Maple Grove, Brooklyn Park, Minneapolis and Edina, or the whole Minnesota energy guide.
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Plymouth energy FAQ
Who is my electric company in Plymouth?
Northern States Power Co – Minnesota, Connexus Energy and Wright-Hennepin Coop Elec Assn all serve parts of Hennepin County. Which one serves you depends on your street, so check the top of your bill. Their 2024 home price averages differ (Northern States Power Co – Minnesota 16.98¢, Connexus Energy 13.66¢, Wright-Hennepin Coop Elec Assn 14.59¢) so it matters for solar math.
How much power will solar make in Plymouth?
About 1,110 kWh a year per kW of panels by our estimate, so a 6 kW system would make roughly 6,660 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 cold waves in Hennepin 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.
Will a home battery keep my heat on in an outage?
It can keep a furnace blower, boiler pump or a heat pump running for a while, but long cold outages drain a battery fast without solar to recharge it. Pair it with a generator or wood or propane heat if outages here run for days.
Do I need a permit for solar or a generator in Plymouth?
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.