Three ways to wire backup power
There are three levels of generator setup, and the right one depends on your budget and how much of the house you want to carry through an outage.
- Portable generator with an inlet and interlock: the budget path. We mount a weatherproof exterior inlet, add an interlock at the panel, and you power the circuits you choose. The electrical work runs $800 to $2,500, and the portable unit itself, which you purchase, typically costs $500 to $2,500.
- Portable generator with a manual transfer switch: a dedicated switch beside the panel with its own pre-selected essential circuits. The electrical falls in the same $800 to $2,500 range, with a cleaner switchover when the lights are out.
- Whole-home standby with an automatic transfer switch: the generator starts itself when the grid fails, whether you are home or at work in Portland. Installed, standby systems run $6,000 to $15,000 and up depending on size and placement.