Backup Power & Transfer

The hardware between a generator and a house that stays lit. Every link goes straight to the maker — no marketplace middlemen.

Rated for the United States: 120/240V split phase, UL listing and a dealer network you can reach. Europe runs a separate list.

Size it first

Backup Power Calculator

Pick the circuits you keep alive and get generator kW, battery kWh and transfer-switch amps. Buy against your own numbers, not a guess.

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Reliance Controls

Pro/Tran 2 transfer switches & inlet boxes

The standard manual transfer switch — six to ten circuits, code-legal backfeed prevention.

Visit Reliance Controls

Generac

Home standby & portable generators

The reference brand for whole-house standby; portables with electric start and CO shutoff.

Visit Generac

Champion

Dual-fuel inverter generators

Propane-or-gas inverters that run quiet enough for a neighborhood outage.

Visit Champion

Westinghouse

Transfer-switch-ready portables

High-surge portables with 30A and 50A outlets that plug straight into an inlet box.

Visit Westinghouse

Interlock Kit

Breaker-panel interlock kits

The budget alternative to a transfer switch — one sliding plate on the main panel.

Visit Interlock Kit

The picks

The exact models the calculators name

Run the numbers first — the Backup Power Calculator filters these to your result. Street-price bands, checked recently, not list prices.

Honda EU2200i — 2.2kW inverter generator, 48 dB — the essentials-only benchmark that starts every time. $1,000–1,200 · View
Westinghouse iGen8200TFc — 8.2kW-peak tri-fuel (gas / propane / natural gas) inverter unit — panel-scale backup with clean output. $1,100–1,500 · View
EcoFlow DELTA Pro 3 — the silent half of a hybrid setup — battery carries the night, generator only runs to recharge. $2,700–3,000 · View

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Links go direct to the maker. Some may earn Grid CEO a commission at no cost to you; nothing here was placed for pay, and no maker saw this list before you did.