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Smart bulbs have really caught on in recent years, and it's easy to see why. They are a breeze to use, work exactly as advertised and offer a simplified introduction into the world of smart home automation. Also, there's just something fun about barking "turn the lights off" like a spoiled monarch and getting the bulb to do your bidding.
Smart bulbs tend to be filled with some nifty, albeit relatively simple, tech, leaving many to wonder if they use more energy than traditional LED bulbs. After all, they do contain more components to enable communication with your smartphone or Wi-Fi. So are these gadgets truly energy efficient or does the convenience come with a price?
Do smart bulbs use more energy than standard LED bulbs?
The answer is yes. Smart bulbs do use a tad bit more energy than regular LED bulbs. This is due to the nature of the technology. The two types of bulbs use the same amount of energy when illuminating a space, but standard LEDs draw no power when turned off. Smart bulbs do draw a bit of power when not in use, so they can remain connected to Wi-Fi or a hub.
According to a 2019 study published in ScienceDirect, "when a user turns off a smart LED bulb from a mobile device, the bulb stops emitting light; however it is constantly consuming power." The study found that of the 30 smart LED bulbs tested, 21 had standby power consumption levels of less than 0.5 watts, which met the requirement set out by the Energy Star program.
How much more energy does a smart bulb use?
Smart bulbs use very little electricity in standby mode. This varies depending on the manufacturer and model, but we've found devices like the TP-Link Tapo that are advertised as consuming about 0.2 watts in standby, while Philips Hue stated in a whitepaper that most of its "more modern products" consume less than 0.5 watts while in standby mode.
A single bulb's standby power consumption will increase your energy bill by $0.35 to $1.30 per year, though this will vary depending on local utility costs. For many, this difference in consumption will be negligible and won't impede smart bulb adoption.
The US Department of Energy notes that devices left in standby mode make up around 5 to 10 percent of a home's total electricity use. The biggest standby power thieves are things like microwaves, televisions, routers and computers, though.
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