Christmas lights when you have no outdoor outlet

Short answer: in order of preference — have an exterior GFCI outlet installed, run a properly rated outdoor cord from a garage outlet, use solar for anything far from the house, or use battery sets for small close-up decorations. Running a cord out through a window is the option everyone reaches for and the one with the real problems.

Option 1: have an outlet installed

This is the actual answer if you intend to decorate every year, and it is a small job for an electrician. A GFCI-protected exterior receptacle with an in-use weatherproof cover is the standard fitting, and it solves the problem permanently rather than every December.

It is also worth more than the display: an exterior outlet is useful for tools, pressure washers, pumps and every other outdoor job for the rest of the year.

Option 2: run from a garage outlet

Most garages have outlets, and a garage is already half outdoors. A properly rated outdoor cord from a garage outlet, run out under the door or through an existing vent, is a sound arrangement.

• Use an SJTW-rated cord — see best outdoor extension cords.
• Protect it where the door closes on it. A garage door closing on a cord repeatedly will damage the jacket. Use a cord protector or route it through a vent.
• Check the garage circuit's other loads. Garage circuits often serve a freezer, a door opener or a workbench.
• Confirm GFCI protection. Garage outlets are usually GFCI protected, but confirm rather than assume — see GFCI and outdoor lights.

Option 3: solar, for anything far from the house

For the tree at the end of the driveway, the mailbox or a fence line, solar is the correct product rather than a compromise. No cord, no circuit load, and it reaches places a cord realistically cannot.

Set expectations for December, though: shortest days, lowest sun angle and cold batteries all cut runtime below the manufacturer's stated figures. Best solar Christmas lights covers what to expect.

Option 4: battery, for small close-up pieces

A door wreath, a window box, a garland on a railing — all are small enough for battery sets, and all are places where a visible cord would spoil the result anyway. Look for a built-in timer and use lithium AA cells in the cold. See best battery Christmas lights.

Ranked

Designing around no outlet

If an outlet is genuinely not happening this year, design for it rather than fighting it. A display built around battery and solar is different from a mains display but it is not a lesser one:

1. A battery-lit wreath on the door, which is the piece closest to every visitor anyway
2. Battery garland along a porch railing
3. Solar stakes or string along the path and the front bed
4. Solar on the one tree that carries the front yard

That is a complete, coherent display with no cord anywhere. Compared with a partially lit roofline fed through a window that will not shut, it is straightforwardly the better outcome.