In short: Hammond has about 23,400 people and sits in Tangipahoa County. Entergy Louisiana LLC, Dixie Electric Membership Corp and Washington-St Tammany E C, Inc serves different parts of Tangipahoa County, so your utility depends on your address; their 2024 home averages range from 11.05¢ to 11.91¢ per kWh (EIA). FEMA rates Tangipahoa County hurricanes “relatively high”. Rooftop solar here makes roughly 1,360 kWh a year per kW of panels by our estimate, which is good for solar.
This page covers what is local to Hammond: its utility, outage records, sunshine, weather risks and charging. Statewide rules such as net metering, incentives and electrician licensing are in our Louisiana energy guide and the wider area is covered in the Baton Rouge guide.
Hammond at a glance
- Place: Hammond, Tangipahoa County, Louisiana; about 23,426 residents (Census Bureau estimate, July 2024).
- Utility: Entergy Louisiana LLC (investor-owned). Homes paid an average 11.05¢ per kWh in 2024 (EIA-861); the average customer lost 213 minutes of power on normal days and 610 counting major storms, with 1.6 interruptions a year (utility-wide, not just Hammond).
- Utility: Dixie Electric Membership Corp (member-owned cooperative). Homes paid an average 11.91¢ per kWh in 2024 (EIA-861); the average customer lost 235 minutes of power on normal days, with 2.6 interruptions a year (utility-wide, not just Hammond).
- Utility: Washington-St Tammany E C, Inc (member-owned cooperative). Homes paid an average 11.85¢ per kWh in 2024 (EIA-861); the average customer lost 242 minutes of power on normal days and 1,508 counting major storms, with 2.6 interruptions a year (utility-wide, not just Hammond).
- Sun: 4.66 kWh per square meter per day on average, from 2.62 in December to 6.25 in May (NASA POWER). Our rough estimate: about 1,360 kWh a year per kW of panels.
- Climate: about 2,830 cooling degree-days and 1,620 heating degree-days a year (base 65°F, NASA POWER), so air conditioning is the big load.
- Top hazards in Tangipahoa County: hurricanes “relatively high”, lightning “relatively high” and tornadoes “relatively high” (FEMA National Risk Index; overall county risk rated “relatively moderate”).
- Public charging: 17 ports at 7 locations in Hammond, 11 of them DC fast (AFDC, October 20, 2026).
Your utility and what it means
Entergy Louisiana LLC is an investor-owned utility and served about 957,522 home customers in 2024; its 11.05¢ average was below the 12.72¢ statewide average for July 2026. Dixie Electric Membership Corp is a member-owned cooperative utility and served about 110,675 home customers in 2024; its 11.91¢ average was below the 12.72¢ statewide average for July 2026. Washington-St Tammany E C, Inc is a member-owned cooperative utility and served about 50,901 home customers in 2024; its 11.85¢ average was below the 12.72¢ 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, Washington-St Tammany E C, Inc reported 242 minutes per customer without major storms in 2024, more than the statewide figure of 206 (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 Louisiana guide and then ask your utility for its current interconnection steps before you sign anything.
Backup power in Hammond
- Hurricanes (relatively high): Hurricanes can mean a week without power. A standby generator on natural gas or propane, or a battery with solar, beats a stack of gas cans; check flood height before you site equipment.
- Lightning (relatively high): Lightning causes short outages and damages electronics. Surge protection and a battery that switches over automatically protect the things you care about.
- Cooling load: an outage in Hammond summer means no air conditioning. A central unit is a big load; a large battery system or standby generator can run it, while a smaller setup keeps fans, a window unit or a mini-split going.
- 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 Hammond
By our rough estimate each kW of panels makes about 1,360 kWh a year in Hammond (NASA sunshine data times 365 days times 0.80 for system losses). Valued at Entergy Louisiana LLC’s 2024 average of 11.05¢, that is about $150 a year per kW if all of it offsets your own use (an estimate, not a promise). Production swings with the seasons: May is the sunniest month at 6.25 and December the dimmest at 2.62, a 2.4-to-1 gap.
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. Hammond has 17 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 Hammond: 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 Hammond building or permitting department, or from Tangipahoa County if you live outside city limits, and often a utility interconnection approval. We have not verified a local permit page for Hammond, so check the city and county websites or ask your electrician, who will know the process. Hire only a licensed electrician or installer; the Louisiana guide lists the state licensing rules.
Nearby guides
More local guides: Baton Rouge energy guide, Central, Kenner, Slidell and Zachary, or the whole Louisiana energy guide.
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Hammond energy FAQ
Who is my electric company in Hammond?
Entergy Louisiana LLC, Dixie Electric Membership Corp and Washington-St Tammany E C, Inc all serve parts of Tangipahoa County. Which one serves you depends on your street, so check the top of your bill. Their 2024 home price averages differ (Entergy Louisiana LLC 11.05¢, Dixie Electric Membership Corp 11.91¢, Washington-St Tammany E C, Inc 11.85¢) so it matters for solar math.
How much power will solar make in Hammond?
About 1,360 kWh a year per kW of panels by our estimate, so a 6 kW system would make roughly 8,160 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 hurricanes in Tangipahoa 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.
Can solar and a battery run my air conditioner during an outage?
Yes if the system is sized for it. A central air conditioner needs a large battery or generator, so many people back up one room or a mini-split instead. Use the battery backup calculator to see the runtime for your appliances.
Do I need a permit for solar or a generator in Hammond?
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.