Do smart plugs work if my internet goes out?

Basic on/off control via the physical button still works during internet outages. However, app control, voice control, and scheduled automations require internet connectivity for Wi-Fi smart plugs. Some plugs (Kasa EP10) can execute stored schedules locally without internet, but voice commands and remote access will not work. If internet reliability is a concern, consider Zigbee plugs with a local hub for offline automation.

Do smart plugs use a lot of electricity when idle?

Smart plugs consume 1-2 watts when idle — about $1-2 per year in electricity. This is negligible. However, the devices you control with smart plugs may draw standby power even when turned off. Using smart plugs to cut power to devices completely can actually save more electricity than the plug itself consumes, particularly for TVs, game consoles, and chargers that draw phantom power.

Best Smart Plugs Under $15 2026