In short: Fond du Lac has about 44,500 people and sits in Fond du Lac County. Wisconsin Electric Power Co, Wisconsin Power & Light Co and Wisconsin Public Service Corp serves different parts of Fond du Lac County, so your utility depends on your address; their 2024 home averages range from 16.23¢ to 19.23¢ per kWh (EIA). FEMA rates Fond du Lac County cold waves “relatively high”. Rooftop solar here makes roughly 1,120 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 Fond du Lac: its utility, outage records, sunshine, weather risks and charging. Statewide rules such as net metering, incentives and electrician licensing are in our Wisconsin energy guide.
Fond du Lac at a glance
- Place: Fond du Lac, Fond du Lac County, Wisconsin; about 44,469 residents (Census Bureau estimate, July 2024).
- Utility: Wisconsin Electric Power Co (investor-owned). Homes paid an average 19.23¢ per kWh in 2024 (EIA-861); the average customer lost 109 minutes of power on normal days and 296 counting major storms, with 0.7 interruptions a year (utility-wide, not just Fond du Lac).
- Utility: Wisconsin Power & Light Co (investor-owned). Homes paid an average 16.89¢ per kWh in 2024 (EIA-861); the average customer lost 68 minutes of power on normal days and 154 counting major storms, with 0.8 interruptions a year (utility-wide, not just Fond du Lac).
- Utility: Wisconsin Public Service Corp (investor-owned). Homes paid an average 16.23¢ per kWh in 2024 (EIA-861); the average customer lost 95 minutes of power on normal days and 465 counting major storms, with 0.8 interruptions a year (utility-wide, not just Fond du Lac).
- Sun: 3.84 kWh per square meter per day on average, from 1.29 in December to 6.25 in July (NASA POWER). Our rough estimate: about 1,120 kWh a year per kW of panels.
- Climate: about 540 cooling degree-days and 7,720 heating degree-days a year (base 65°F, NASA POWER), so heating is the big load.
- Top hazards in Fond du Lac County: cold waves “relatively high”, strong winds “relatively high” and hail “relatively moderate” (FEMA National Risk Index; overall county risk rated “relatively low”).
- Public charging: 39 ports at 8 locations in Fond du Lac, 25 of them DC fast (AFDC, October 20, 2026).
Your utility and what it means
Wisconsin Electric Power Co is an investor-owned utility and served about 1,048,148 home customers in 2024; its 19.23¢ average was close to the 19.06¢ statewide average for July 2026. Wisconsin Power & Light Co is an investor-owned utility and served about 437,211 home customers in 2024; its 16.89¢ average was below the 19.06¢ statewide average for July 2026. Wisconsin Public Service Corp is an investor-owned utility and served about 411,775 home customers in 2024; its 16.23¢ average was below the 19.06¢ 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, Wisconsin Electric Power Co reported 109 minutes per customer without major storms in 2024, more than the statewide figure of 91 (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 Wisconsin guide and then ask your utility for its current interconnection steps before you sign anything.
Backup power in Fond du Lac
- Cold waves (relatively 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.
- 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.
- 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 Fond du Lac
By our rough estimate each kW of panels makes about 1,120 kWh a year in Fond du Lac (NASA sunshine data times 365 days times 0.80 for system losses). Valued at Wisconsin Electric Power Co’s 2024 average of 19.23¢, that is about $215 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 6.25 and December the dimmest at 1.29, a 4.8-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. Fond du Lac has 39 public charging ports in the federal station list including 25 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 Fond du Lac: 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 Fond du Lac building or permitting department, or from Fond du Lac County if you live outside city limits, and often a utility interconnection approval. We have not verified a local permit page for Fond du Lac, so check the city and county websites or ask your electrician, who will know the process. Hire only a licensed electrician or installer; the Wisconsin guide lists the state licensing rules.
Nearby guides
More local guides: Oshkosh, Appleton and Sheboygan, or the whole Wisconsin energy guide.
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Fond du Lac energy FAQ
Who is my electric company in Fond du Lac?
Wisconsin Electric Power Co, Wisconsin Power & Light Co and Wisconsin Public Service Corp all serve parts of Fond du Lac County. Which one serves you depends on your street, so check the top of your bill. Their 2024 home price averages differ (Wisconsin Electric Power Co 19.23¢, Wisconsin Power & Light Co 16.89¢, Wisconsin Public Service Corp 16.23¢) so it matters for solar math.
How much power will solar make in Fond du Lac?
About 1,120 kWh a year per kW of panels by our estimate, so a 6 kW system would make roughly 6,720 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 Fond du Lac 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 Fond du Lac?
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.