Power outages used to be a minor inconvenience. Today, with more Americans working from home, relying on powered medical equipment, and facing increasingly severe weather events, losing grid power can quickly become a real emergency. A standby home generator is the most reliable solution on the market — and it's easier to own than most homeowners think.
At Portlandia Electric Supply, we stock 61+ standby generators from the industry's most trusted brands: Generac, Cummins, Champion, and Briggs & Stratton — ranging from compact 12 kW home units to heavy-duty 150 kW commercial-grade systems. Here's everything you need to know to choose the right one.
Standby vs. Portable: What's the Difference?
Many homeowners default to a portable generator when outages hit — but the two products couldn't be more different in terms of convenience and capability.
| Feature | Standby Generator | Portable Generator |
|---|---|---|
| Activation | Automatic (within seconds) | Manual setup required |
| Fuel source | Natural gas or propane (permanent) | Gasoline (must be refueled) |
| Installation | Permanently wired to panel | Extension cords or transfer switch |
| Output | 12 kW – 150 kW+ | Typically 3–12 kW |
| Whole-home coverage | Yes | Rarely |
| Weather protection | Enclosed, all-weather unit | Outdoor use only, no shelter |
A standby generator sits permanently outside your home, connects directly to your electrical panel via an Automatic Transfer Switch (ATS), and fires up on its own — usually within 10–30 seconds of a grid failure. You don't have to do a thing.
How to Size a Standby Generator for Your Home
The single most important decision is choosing the right output (kW). Undersizing leaves critical loads unprotected; oversizing wastes money. Here's a practical sizing framework:
- 12–20 kW — Covers essential circuits: lighting, refrigerator, HVAC, outlets, sump pump. Ideal for homes under 2,000 sq ft.
- 22–30 kW — Full home coverage for mid-size homes with electric appliances, EV chargers, or home offices.
- 32–48 kW — Large homes, outbuildings, or properties with heavy electrical loads (electric ranges, multiple HVAC zones, pool equipment).
- 60–150 kW+ — Estate properties, small businesses, light commercial facilities, or critical infrastructure
When in doubt, always size up — modern standby generators are highly efficient even at partial load, and the incremental cost of a larger unit is far less than a second installation later.
Brand Spotlight: What We Carry
Generac — America's #1 Generator Brand
With 33 Generac models in our catalog, we carry the deepest inventory of America's best-selling standby generator line. Popular models include:
- Generac Guardian 22 kW (7043-3) — $8,774 | SKU: PES-PS-GEN-0016 — the most popular entry-level whole-home unit
- Generac Protector 30 kW (RG030) — $13,302 | SKU: PES-PS-GEN-0037 — liquid-cooled, aluminum enclosure
- Generac Protector 60 kW (RG06045) — $24,247 | SKU: PES-PS-GEN-0038 — commercial-grade reliability
- Generac Protector 150 kW (RG15090) — $43,142 | SKU: PES-PS-GEN-0042 — the flagship industrial unit
Generac units feature smart load management, remote monitoring via the Mobile Link app, quiet 1,800 RPM operation, and durable all-weather enclosures built to run for decades.
Cummins — Quiet Connect Series
Cummins is the gold standard for quiet, liquid-cooled performance. The Cummins C20D6 20 kW Quiet Connect (starting at $18,322) delivers whisper-quiet operation — a major advantage in suburban neighborhoods with HOA noise restrictions.
Briggs & Stratton — Fortress Series
The Briggs & Stratton 30 kW Fortress (SKU: PES-PS-GEN-0007) is currently on sale at $13,929 — a liquid-cooled LPV/NG unit offering exceptional value for large-home installations.
Champion — Value-Driven Performance
With 12 Champion models available, we carry Champion's full standby lineup for budget-conscious homeowners who don't want to sacrifice reliability.
Key Features to Look For
When comparing standby generators, evaluate these five critical specs:
- Automatic Transfer Switch (ATS) — Ensure seamless, hands-free switchover. Most quality standby units include one; verify it's sized for your panel amperage.
- Fuel type — Natural gas is the most convenient (no storage tanks, no refueling), but propane is the better choice in rural areas without gas line access.
- Cooling system — Air-cooled units (12–22 kW range) are cost-effective for most homes. Liquid-cooled units (22 kW and up) run cooler, quieter, and last longer under continuous load.
- Enclosure rating — Look for aluminum or corrosion-resistant steel enclosures rated for your local weather. Units in coastal or high-humidity zones need enhanced corrosion protection.
- Remote monitoring — Top brands offer app-based monitoring so you can verify your generator is ready before a storm hits, and track run hours and maintenance alerts.
Installation: What to Expect
A standby generator installation typically involves:
- A licensed electrician connecting the unit to your main electrical panel and installing the ATS
- A gas plumber extending your natural gas or propane line to the generator pad
- A concrete or composite pad for the unit
- A permit inspection in most jurisdictions
Installation costs typically run $2,000–$5,000 depending on the complexity of your electrical panel, fuel line distance, and local permit requirements — a one-time investment that protects a home worth hundreds of thousands of dollars.
Protecting More Than Comfort
Homeowners often think of standby generators as a comfort upgrade. But the real value goes deeper:
- Medical necessity — Home oxygen concentrators, CPAP machines, insulin refrigeration, and home dialysis equipment all depend on uninterrupted power
- Food security — The average American household keeps $300–$500 of food in the refrigerator and freezer at any time
- Smart home continuity — Security cameras, smart locks, alarm systems, and home networks all go dark in a grid outage
- Pipe protection — In cold climates, frozen pipes can cause $5,000–$70,000 in structural damage — far exceeding the cost of any generator
Ready to Find Your Generator?
Browse our full Standby Home Generator collection — 61 models from Generac, Cummins, Champion, and Briggs & Stratton, ready to ship nationwide.
Not sure what size you need? Our team can help you spec the right unit based on your home's load profile and fuel availability.
📞 (888) 876-0007 | 📧 connect@portlandiaelectric.supply