A permanent whole-house standby generator installed in New Jersey in 2026 typically runs $8,500–$18,000 all-in. A 10kW unit sized to run the essentials — furnace, fridge, a few outlets, and lights — sits at the low end. A 22–26kW unit sized to run the entire home on natural gas, with a full-load automatic transfer switch, sits at the high end.
This guide breaks down exactly what you're paying for, what drives the price up or down, and how New Jersey permits, PSE&G gas service, and inspection requirements factor into your final installed cost.
Typical 2026 NJ Whole-House Generator Install Costs
| Scenario | 2026 NJ Cost Range |
|---|---|
| 10kW standby, natural gas, short run, existing 200A panel | $8,500 – $11,000 |
| 14–18kW standby, natural gas, standard install | $11,000 – $14,500 |
| 22–26kW whole-home, natural gas, automatic transfer switch | $14,000 – $18,000 |
| Propane (LP) install with new 500-gallon tank | $12,000 – $20,000 |
| Generator install requiring panel upgrade first | Add $2,800 – $4,500 |
| Long gas-line run or difficult placement | Add $1,500 – $3,500 |
These ranges are what we're actually quoting across Hudson, Essex, and Bergen County in 2026 — on real properties with real permit costs and real PSE&G coordination. They are not manufacturer list prices, and they are not "starting at" numbers.
What's Included in a Permit-Pulled NJ Generator Install
A compliant whole-house generator install in New Jersey is much more than "drop the unit and wire it in." Every complete quote should include:
- The generator unit itself — a Generac, Kohler, Briggs & Stratton, or Cummins standby, sized to your load calculation.
- A concrete or composite pad — sized, leveled, and placed per manufacturer and code clearance requirements.
- An automatic transfer switch (ATS) — either a service-entrance-rated ATS or a load-side ATS, depending on your setup. Automatic is the whole point; manual transfer defeats the purpose.
- The fuel connection — either a natural gas tap from your existing PSE&G meter (with a meter upgrade if your existing service can't handle the added load) or a new propane tank and line.
- Electrical wiring and conduit from the generator to the transfer switch and into your main panel.
- Hudson / Essex / Bergen County electrical permit — pulled and paid for by the contractor.
- Building or mechanical permit for the gas hookup (varies by municipality).
- Final inspection and sign-off with the local Uniform Construction Code office.
- Startup, testing, and customer walkthrough — including battery install, exercise-cycle programming, and Wi-Fi monitoring setup if the unit supports it.
- A labor warranty on top of the manufacturer's 5-year unit warranty.
If a quote doesn't explicitly name those line items, something is being cut — usually the permit, the ATS quality, or the gas-line permit. Any of those will come back to bite you at resale or at the first insurance claim after an outage.
What Drives Generator Cost in New Jersey
1. Unit size (kW output)
Size is the single biggest cost driver. A 10kW unit wholesale is roughly half the cost of a 22kW unit. The right size depends on a load calculation — how many circuits you want to back up, whether you want central A/C to stay on during a summer outage, whether you have an electric range or heat pump, and so on. A licensed electrician should do the load calc before quoting a size. Anyone who quotes a generator size without asking about your specific loads is guessing.
2. Fuel type — natural gas vs propane
In most of Hudson, Essex, and Bergen County, natural gas from PSE&G is the right answer. The fuel is already at the house, there's no tank to own, and it never runs out during an extended outage. Propane is the fallback when natural gas isn't available — most of North Jersey has gas service, but some pockets don't. Propane adds $3,500–$7,500 for the tank, pad, and fuel line, plus recurring tank fees.
3. Distance from panel and gas meter
The farther the generator sits from your main panel and gas meter, the more conduit, wire, and gas line you need — and the more labor hours go into pulling those runs. A clean install puts the unit within 15 feet of the service entrance on the same side of the house as the gas meter. A long run can add $1,500–$3,500 to the quote.
4. Whether your existing panel can handle it
Older NJ homes with 100A service, Federal Pacific or Zinsco panels, or panels already near capacity need a panel upgrade before a whole-house generator can legally be installed. That's a separate $2,800–$4,500 project on top of the generator install. If your panel is 200A and modern, you're clear.
5. Permits and inspections
New Jersey requires both an electrical permit and a gas permit for a standby generator install. Permit fees vary by municipality, but between the two permits plus the final inspection, most Hudson/Essex/Bergen installs see $350–$650 in permit costs baked into the quote. Skipping permits is never worth it — unpermitted work voids your home insurance and shows up in every pre-sale inspection.
Sizing: How Much Generator Do You Actually Need? (NJ Home Sizing Table)
We do a proper NEC-compliant load calculation before every quote, but here is the detailed 2026 NJ home sizing guide we use as a starting point. Home square footage is the starting point, but the real drivers are whether you have central A/C, a heat pump, electric dryer, electric range, or an EV charger.
| Home size | Typical NJ home | Backup scope | Recommended kW | Install range (2026) |
|---|---|---|---|---|
| Under 1,500 sq ft | 2-BR condo, small rowhome, 1-BR single family | Essentials only (furnace, fridge, sump, lights, Wi-Fi) | 10 kW | $8,500 – $10,500 |
| 1,500 – 2,500 sq ft | Most NJ 3-BR single family and 2-family lower unit | Essentials + one A/C zone + kitchen | 14 kW | $10,500 – $13,000 |
| 2,500 – 3,500 sq ft | Larger NJ single family, full 2-family, modern new construction | Whole home except redundant loads | 18 kW | $12,500 – $15,500 |
| 3,500 – 5,000 sq ft | Large Bergen County single family or multi-zone heat pump home | True whole-home including multi-zone HVAC | 22 kW | $14,500 – $17,500 |
| 5,000+ sq ft | Estate or home with EV + heat pump + electric everything | Whole-home with EV charger in load management | 26 kW | $16,500 – $22,000 |
Add Extra kW for These Loads
- Central A/C (each outdoor condenser): +3–5 kW running, +4–7 kW starting surge
- Heat pump (cold-climate central): +5–8 kW running, higher surge than A/C
- Electric range or wall oven: +8–12 kW if used during outage
- Electric dryer: +5–6 kW
- EV charger (Level 2, not in load-management mode): +8–12 kW
- Electric water heater: +4.5 kW
- Well pump or booster pump: +2–3 kW running, higher surge
A modern transfer switch with load management can shed non-critical loads during peak moments — for example, pausing the EV charger when the A/C compressor starts — so you do not have to size the generator to cover every load running simultaneously. Every Malfettone quote specifies whether the ATS we are proposing includes load management and which loads it shedding.
Sizing too small means the generator trips offline mid-storm. Sizing too big means you paid for capacity you will never use. A load calc costs nothing extra as part of a proper quote.
Generac vs Kohler vs Cummins vs Briggs & Stratton — 2026 Brand Comparison
Four brands install in NJ at any real volume: Generac, Kohler, Cummins (formerly Onan), and Briggs & Stratton. All four are UL-listed standby generators. Here is how they compare on the things NJ homeowners actually care about.
| Factor | Generac | Kohler | Cummins | Briggs & Stratton |
|---|---|---|---|---|
| 2026 install cost (16–18 kW installed) | $11,500 – $14,000 | $13,500 – $16,500 | $14,500 – $17,000 | $10,500 – $13,000 |
| Warranty (standard) | 5-year limited | 5-year / 10-year extended | 5-year / 10-year extended | 5-year limited |
| Engine type | Air-cooled (most residential) or liquid-cooled (larger) | Liquid-cooled across most residential sizes | Liquid-cooled (quieter, heavier duty) | Air-cooled |
| Noise level (rated) | 62–67 dB | 59–64 dB (quieter) | 60–65 dB | 64–68 dB |
| NJ installer availability | Very high — most NJ contractors | High — most NJ contractors | Moderate — fewer NJ certified installers | Moderate |
| Parts availability in NJ | Excellent — fastest parts in NJ | Very good | Good (commercial-grade parts) | Good |
| Wi-Fi monitoring (standard) | Yes (Mobile Link, included) | Yes (OnCue, included on most models) | Yes (on newer residential units) | Yes |
| Best for | Value + broad service network | Quieter operation + longer warranty | Premium, heavy-duty use, commercial crossover | Budget-conscious install |
Which Brand We Recommend for Most NJ Homes
For most Hudson, Essex, and Bergen County homes we install, Generac is the right call for value — the combination of install cost, service network density in NJ, and parts availability is hard to beat, and the Mobile Link monitoring is genuinely good. If quiet operation matters (close neighbors in Hoboken or a Jersey City condo HOA with noise rules), Kohler is the upgrade we recommend — 3–5 dB quieter at rated load and a stronger extended warranty. Cummins is the pick for homes doing heavy generator duty cycles or for customers who want the most commercially engineered unit on the market — the price premium is real but so is the build quality. We install all three and are certified servicers for each.
What to Avoid
Off-brand or imported standby generators sold online at big discounts almost always have no local NJ service network. When the unit fails — and it will, at some point in its 15–20 year life — you will be shipping parts from out of state and paying labor premiums for contractors willing to service an unfamiliar unit. The sticker savings at install evaporate on the first service call.
Ongoing Generator Maintenance Costs in NJ
A standby generator is a small engine that runs unattended for years at a time. It needs periodic maintenance to be reliable in an actual outage. NJ 2026 maintenance costs:
- Annual service (oil, filter, spark plugs, battery check, load test): $325–$475 per visit. This is the single most important item — a generator without annual service often fails to start on the day you need it.
- Battery replacement: Every 2–3 years, $85–$150 per battery.
- Extended warranty (most brands): $600–$1,400 one-time to move from 5 to 10 years.
- Wi-Fi monitoring data plan: Included free with most current units.
- Exercise cycle: A small amount of gas or propane burned weekly during the built-in self-test cycle — negligible on utility gas, meaningful if you are on propane ($25–$60 per year).
We offer a flat-rate annual maintenance plan for generators we install, and we service existing units from Generac, Kohler, Cummins, and Briggs regardless of who originally installed them.
Why Cheaper Generator Quotes Almost Always Fall Apart
We see homeowners get quotes $3,000–$4,000 below our range fairly regularly. When we look at what's actually in those quotes, it's almost always one of these:
- A manual transfer switch instead of automatic — you have to go outside in the storm to switch over.
- No gas permit pulled — which means no inspection, which means no code compliance, which means an insurance problem.
- No load calculation — the contractor guessed at size, and the unit is undersized for the home.
- No pad, or a too-small pad — the unit sits on gravel or on a pad too small for code-required clearances.
- No Wi-Fi monitoring, no walkthrough, no labor warranty.
Generators run for 15–20 years. A $2,000 savings at install stretched across that lifetime is noise. A non-compliant install that voids your insurance claim when you need it most is the actual risk.
NJ Generator Install FAQs
Do I need a permit to install a whole-house generator in NJ?
Yes — both an electrical permit and a gas (mechanical) permit are required under the New Jersey Uniform Construction Code for any permanent standby generator install. We pull both on every job.
How long does a generator install take?
From signed contract to running-on-generator, most Hudson/Essex/Bergen County installs take 3–5 weeks — most of which is permit review and PSE&G gas coordination, not the install itself. The physical install is a 1–2 day job.
Does PSE&G need to be involved?
Yes for natural gas installs. PSE&G has to confirm your gas service can handle the added load, and may require a meter upgrade. We handle the PSE&G application as part of the install.
Is a whole-house generator tax-deductible in NJ?
Not as a general home improvement, but if the generator is medically necessary (for example, to run a CPAP or dialysis equipment) the cost may qualify as a medical expense deduction. Talk to your tax preparer.
Can I add a generator later if I install a panel upgrade now?
Absolutely — and that's often the smart move. If you're already upgrading your panel, we can size the new panel with a generator hookup in mind so the future install is a cleaner, cheaper job.
Ready for a Real Quote?
Schedule a free in-home or virtual consultation and we'll do a proper load calculation, size the unit to your home, and give you a written quote with every line item — generator, transfer switch, pad, fuel hookup, permits, and PSE&G coordination. Free estimates, no pressure.
Or call 1-855-55VOLTS to talk through your options.