WNY generator pillar

Whole-house generators for WNY homes

A standby generator sits outside on a pad, ties into your gas line (or a propane tank), and auto-starts within 10-30 seconds when the grid drops. It is the cheapest way to buy real outage insurance, and the one option with unlimited runtime. It is also loud, produces exhaust, and costs real money in both install and ongoing maintenance. This is the guide for homeowners in Buffalo, Rochester, and the rest of WNY who are weighing that trade.

Size a generator with the calculator Compare vs solar + battery

How to size a generator in WNY

Rule-of-thumb, not a Manual-J. An electrician sizes to your actual panel and load, but this gets you in the right bucket.

Home size	Typical kW	What it runs
1,500-2,500 sq ft	14-20 kW	Fridge, furnace blower, well pump, lights, Wi-Fi, sump pump, a couple of window ACs. Not whole-home central AC.
2,500-3,500 sq ft	20-22 kW	Above plus central AC or a single heat pump zone.
3,500+ sq ft or multiple heat pumps	22-26 kW	Everything. This is the bucket for electrified homes.

WNY-specific sizing note

If you are electrifying (heat pump, EV charger, induction range) in the next 5 years, size up one class now. Swapping a 16 kW for a 22 kW later costs more than the original install.

Generac vs Kohler vs Briggs in WNY

These are the three brands WNY installers actually carry. Other names exist but parts and service in Buffalo / Rochester skew to these three.

Generac Guardian

15-26 kW · $8,000-$15,000

5-7 year warranty

Market leader in WNY by install volume. Most Buffalo-area electricians carry it. Widest certified installer network.

Watch for: Control-board failure in year 4 is a common out-of-warranty repair ($600-$800). Budget for it on pre-2022 installs.

Kohler

14-24 kW · $10,500-$21,000

5 yr comprehensive, 10 yr limited available warranty

Premium option. Commercial-grade components, quieter, heavier-duty. Better long-term math if repair cost matters.

Watch for: Fewer WNY installers carry Kohler than Generac. Confirm local service before buying; a 2-hour service call is different from a 40-minute one.

Briggs & Stratton

10-26 kW · $7,500-$14,000

6 year limited (Symphony II power management) warranty

Budget tier standby. Real product, narrower dealer network, thinner parts availability.

Watch for: Parts lead-time can run longer than Generac or Kohler if something fails mid-outage season.

Fuel: natural gas vs propane in WNY

Natural gas in WNY

Most homes in Buffalo, Amherst, West Seneca, Cheektowaga, and Tonawanda are on National Grid gas mains. Natural gas is the right choice if you already have the line: unlimited runtime, cheaper per hour, no tank. Downside: in a broad gas-line emergency it also goes down, though that is rare in WNY.

Propane for rural WNY

Wyoming County, Cattaraugus, parts of Niagara and Erie outside the gas grid need propane. Requires a tank ($500-$3,000 installed). A 500-gallon tank typically powers a 20 kW generator for 5-7 days at moderate load; a 1,000-gallon tank doubles that.

Derate on natural gas

Generators lose about 10% of propane-rated output on natural gas. A 22 kW Generac runs closer to 19.5 kW on NG. Size up one class when on gas.

Cost to run during a 20 kW outage

Natural gas: roughly $30-$50 per day at moderate load. Propane: roughly $50-$80 per day. A 48-hour outage ranges $100-$480 in fuel depending on fuel type and load.

Ongoing reality: maintenance, noise, and CO

Annual service

$200-$500/yr typical

Oil change, filters, spark plugs, battery check. A weekly self-test cycle runs automatically to keep components exercised. Skipping service voids most warranties.

Noise

60-75 dB at 25 ft

Roughly a central AC unit, with more mechanical timbre. HOAs and some WNY neighborhoods have siting and setback rules; confirm with your AHJ before the pad goes in.

Carbon monoxide safety

In major storm events, deaths from generator CO poisoning have historically outnumbered deaths from the storms themselves. Standby generators are vented outside and safer than portables by design, but setback from windows and intake vents is not optional. Follow NFPA 37 clearances and your manufacturer's manual.

Lifespan

15-30 years with maintenance

Standby generators that get their annual service and a transfer-switch test every couple of years routinely run 20+ years. Skipped service cuts that in half.

Who generators fit, and who they do not

Fits

Rural WNY homes where outages routinely run 3+ days.
Homes that are not solar-viable (roof condition, shading, orientation).
Budget-constrained buyers who need resilience now and do not have $25k+ for a solar + battery stack.
Well-pump and septic-pump households where water and drainage stop without power.

Does not fit

HOAs or neighborhoods with strict noise ordinances or setback restrictions.
Homeowners sensitive to carbon footprint or exhaust.
Short, frequent outage profiles where a battery is quieter and has zero ongoing cost.
Homeowners planning to electrify heating within 5 years and looking for long-term daily savings, not just resilience.

Next step

If you are sized-in, the Battery vs Generator tool produces a real runtime number for your critical loads. If you are still weighing the trade vs solar or battery, the Compare page is the fastest side-by-side.

Size with the Battery vs Generator tool Compare solar vs battery vs generator Build your critical-loads list first

Price bands reflect typical WNY installs as of early 2026 and move with fuel-line length, transfer-switch complexity, and local permit fees. Always get two written quotes from a licensed electrician or generator specialist before committing.