Your switched-off home still uses power: how to track standby energy

A red LED barely glows, the television screen is black and the motorised blind is still. None of that necessarily means zero consumption. EU rules distinguish between off mode, conventional standby and networked standby. That matters because a modern home may not have one dramatic “energy vampire”; instead, many small functions can remain available around the clock and add up.

The European Commission explains that the scope can include audio and video equipment, microwave ovens and toys, but also motor-operated building elements such as blinds, gates, windows and curtains, plus adjustable furniture such as height-adjustable desks and elevation beds. Washing machines, dishwashers, cordless phones and tumble dryers are partly covered by separate product-specific rules. A single generic number therefore cannot be applied to every appliance.

1. Three states, three different questions

Off mode means the product remains connected to the mains but provides no active function. Standby may preserve a reactivation function or status display. In networked standby, the device waits to be woken through a wired or wireless connection; a modem, printer, game console or set-top box can work this way.

The label used in the menu does not tell the full story. A “quick start”, “always available”, “remote start” or “instant on” option may use more background power than conventional standby. When buying, ask not only what the product consumes while working, but also which mode it will occupy for most of the day.

2. What do the EU limits change?

According to the European Commission’s consumer summary, from 2025 new products within the horizontal regulation generally may not exceed 0.5 watts in standby or off mode, or 0.8 watts in standby while displaying information or status. From 2027, the off-mode ceiling falls to 0.3 watts, while networked standby limits range from 2 to 7 watts depending on the product.

These are placing-on-the-market requirements. They do not mean every older device automatically consumes this little, nor do they make every new product equally efficient. Check the technical documentation for the exact model. Appliances that have moved to product-specific regulation may also be subject to different requirements.

3. Networked standby is not automatically waste

A modem or mesh node has to remain awake to provide internet access; a smart-home hub may connect alarms, sensors or heating. Cutting their power would remove the service for which they are used.

The useful question is therefore not “should everything be unplugged?” but “which function genuinely needs to remain available?” Remote wake-up on a guest-room television, the Wi-Fi connection of a rarely used printer or automatic updates on a game console may not matter throughout the night. A router, security system or medical device belongs in a different category. Do not place safety-related or continuity-critical equipment on a timer without approval from its manufacturer or installer.

4. Measure instead of guessing

A plug-in electricity meter can show what a product draws in real use. Measure for at least a full day rather than relying on a brief snapshot, because the device may switch modes during updates, network communication or automatic maintenance.

A simple annual estimate is:

power in watts × hours per day × 365 ÷ 1000 = kWh per year

A continuous 1-watt background load equals about 8.76 kWh a year. To estimate your own cost, multiply this by the electricity price that actually applies to your bill; do not copy a generic online tariff if your contract or billing method is different.

Use only an undamaged meter with a suitable load rating. Do not reconnect built-in, high-power or dedicated-circuit equipment merely to measure it; consult an electrician or the manufacturer’s documentation instead.

5. Five settings worth finding

1. Quick start or instant on: disabling it may lengthen start-up but can reduce background demand.
2. Wake on network: if remote start is unnecessary, check whether it can be disabled.
3. Automatic sleep: choose the shortest delay that remains practical.
4. Wireless connection: a rarely used printer or media player may not need to stay connected constantly.
5. Display and clock: some products let you control the standby display separately.

Measure again after changing a setting. A menu label is not proof of savings, and a software update may re-enable a function.

6. What should you ask before buying?

Request the exact model’s power in off, standby and networked-standby modes. Ask which wired and wireless ports remain active, whether remote wake-up can be disabled, how quickly automatic power management engages and what happens after a power interruption.

For motorised blinds, height-adjustable desks or adjustable beds, also ask whether the controller continuously listens for radio commands, whether an external power supply is included, and whether a true off mode can preserve settings. Read the exact model documentation, not merely a family brochure.

Audit one room at a time

A good audit is not one indiscriminate master switch. Start with the home office and media area, then review the guest room, countertop appliances and motorised furniture or shading. Mark which services are needed overnight, which are only needed during the day and which gain no real benefit from constant availability.

The goal is not to make a smart home unintelligent. A well-designed system stays awake only as much as its real purpose requires.