Millions of households pay for electricity their gadgets consume while sitting idle, switched off, or in sleep mode. Field measurements in 10 California residences found standby loads averaging 67 watts per home and reaching as high as 169 watts, with that phantom draw accounting for 5 percent to 26 percent of annual electricity use. Televisions, set-top boxes, and printers ranked among the largest contributors, and federal standards still do not cover several fast-growing product categories, including game consoles, smart speakers, and powered furniture.
Hidden watts add up to a 60-watt bulb that never turns off
Standby power, sometimes called vampire or phantom load, refers to the electricity a device draws even when it appears to be off. The U.S. Department of Energy defines it this way and points to standard test procedures such as IEC 62301 for quantifying low-power modes. The problem is not abstract. The International Energy Agency has estimated that standby consumption equals roughly 10 percent of residential electricity use across OECD countries, an amount equivalent to leaving a 60-watt light bulb burning around the clock in every home.
That estimate aligns with the field data collected by Lawrence Berkeley National Laboratory in California homes, where standby ranged from 14 watts to 169 watts with an average of 67 watts. In the worst-performing house, more than a quarter of annual electricity went to devices that were not actively being used. The gap between the best and worst homes, a spread of more than 150 watts, suggests that product choices and plug habits make a measurable difference.
A policy concept known as the One Watt Initiative, developed by researchers Alan K. Meier and Benoit LeBot, proposed capping each product’s standby draw at roughly one watt. That benchmark shaped regulations in multiple countries and remains a reference point for efficiency programs. Yet many common devices still exceed it by a wide margin, and the proliferation of networked electronics has multiplied the number of plugs that quietly sip power all day.
Set-top boxes, smart TVs, and the devices that never fully sleep
Cable and satellite set-top boxes stand out as some of the worst offenders. A U.S. Energy Information Administration analysis found that these boxes are essentially never fully off, often pulling 15 to 20 watts in standby while waiting for signals or downloading program guides. That single device can consume more standby power than most other electronics in a home combined, especially in houses with multiple televisions.
Network-connected televisions present a related challenge. Smart TVs maintain Wi-Fi connections, check for software updates, and respond to voice commands while nominally off. ENERGY STAR now tests these products for Standby-Active Mode power using the ANSI/CTA-2037-C procedure, but the mere existence of a test standard does not eliminate the draw. Every smart TV that stays plugged in continues to sip electricity for its network features, and the cumulative impact grows as screens get larger and more capable.
Beyond those two categories, the California Energy Commission identified game consoles, small network equipment such as routers and mesh systems, speaker systems, and powered furniture as device categories not fully covered by existing low-power mode standards. A 2026 staff report on a voluntary performance framework for low-power modes flagged these gaps, noting that idle and low-power functions represent a growing share of household electricity use. Chargers and external power supplies do fall under federal rules codified in federal efficiency regulations, which set no-load and active-mode performance requirements. The U.S. Department of Energy’s external power supply program enforces those limits on adapters and chargers. But the rule applies to the power supply itself, not to the device it feeds, leaving a regulatory blind spot for the gadget on the other end of the cord.
The practical result: a household with a cable box, a smart TV, a game console, a mesh router, a smart speaker, a printer, and a laptop charger can easily exceed 100 watts of continuous standby draw. Over a year, that adds up to hundreds of kilowatt-hours and tens of dollars on an electricity bill, all for devices no one is actively using. In regions with carbon-intensive power grids, those invisible watts also translate into substantial greenhouse gas emissions.
Could targeted rebates cut standby waste by a third?
One hypothesis worth examining is whether utilities could accelerate progress by mailing tiered rebates tied to measured standby performance below one watt on the top five household culprits. Rather than relying solely on mandatory standards, a utility or state program could offer modest but automatic bill credits to customers who purchase ultra-low-standby models of set-top boxes, smart TVs, game consoles, small network gear, and smart speakers.
The mechanics could be straightforward. Retailers would pass along model numbers at the point of sale, utilities would cross-check them against a qualifying list, and customers would see the incentive on their next bill. To keep administrative costs low, the program could piggyback on existing appliance rebate platforms, adding a new category for low-power modes. Manufacturers, in turn, would have a clear financial signal: cut standby below one watt, and your product becomes easier to market with a built-in bill credit.
If such a program reached enough homes, average residential standby could plausibly fall 30 to 40 percent within 18 months, with results verifiable through pre-and-post IEC 62301 audits on participating meters. Utilities already deploy advanced metering infrastructure capable of tracking whole-home load profiles at fine time intervals. By comparing overnight baselines before and after households adopt qualifying devices, evaluators could estimate real-world reductions without intrusive submetering of every outlet.
The technical headroom exists. The IEA has reported that cost-effective design changes could achieve reductions of approximately 75 percent on average, and up to 90 percent in many appliances. The engineering is not the bottleneck. The bottleneck is that consumers rarely know which products waste the most power in standby, and manufacturers face little market pressure to prioritize a feature that is invisible on the showroom floor.
Rebates alone will not solve every gap. Some devices, such as legacy set-top boxes supplied by cable providers, may require direct utility or regulator engagement with service companies rather than individual consumers. Others, like built-in powered furniture or integrated lighting systems, may be difficult to swap out quickly. Still, a focused incentive on the five or six most common standby hogs could capture a large share of the potential savings while standards and labeling rules slowly evolve.
What households can do now
While policymakers debate frameworks and utilities test pilot programs, households have options today to curb phantom loads. Smart power strips can cut power entirely to clusters of electronics when a main device, such as a television, is turned off. Many game consoles and streaming boxes offer “energy-saving” or “eco” modes that reduce network activity and disable instant-on features, trimming their idle draw. Unplugging rarely used chargers and printers, or consolidating them on a switched strip, can knock tens of watts off a home’s baseline without noticeable inconvenience.
Ultimately, the scale of standby waste reflects design choices made far upstream of any individual outlet. But field data from California homes and international analyses show that those hidden watts are neither inevitable nor trivial. With better information, targeted incentives, and updated standards that close remaining loopholes, the everyday act of plugging in a device would no longer come with the hidden cost of powering a 60-watt bulb that never turns off.
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*This article was researched with the help of AI, with human editors creating the final content.
