How Arbor users cut standby power with smart plugs, power strips, and energy monitors

Standby power, the electricity devices draw while switched off or idle, accounts for 5% to 10% of residential electricity use and can cost a household as much as $100 per year, according to the Department of Energy. Smart plugs, smart power strips, and home energy monitors exist to find and eliminate that draw. Since launching in 2022, Arbor, an automated rate-shopping service licensed in 12 deregulated states, has worked the same bill from the price side, with documented user savings reaching $7.5 million.

Do smart plugs save energy?

Smart plugs save energy when they cut power to devices that would otherwise sit in standby. Research from Lawrence Berkeley National Laboratory shows that while most individual products draw under half a watt in standby, the accumulated total across a home reaches 5 to 10% of residential electricity use.

A smart plug set to an always-on schedule saves nothing, and a plug controlling a device with no standby draw saves almost nothing. Savings concentrate where idle draw runs high:

• Entertainment centers: Cable boxes, game consoles, and streaming devices can pull 15 to 40 watts continuously, even when no one is watching.
• Home offices: Monitors, printers, speakers, and chargers stay plugged in around the clock and idle through most of it.
• Seasonal equipment: Window air conditioners, space heaters, and holiday lighting draw power for months after their season ends unless disconnected.

Smart power strips vs. regular power strips

A regular power strip has one master switch that cuts power to every outlet at once, and it works only when someone remembers to flip it. A smart power strip automates the decision, either by sensing when a control device such as a television powers down and shutting off its peripherals, or by giving each outlet its own schedule and app control.

Per-outlet control matters most where always-on and sometimes-on devices share a location. An entertainment center can keep a router or DVR powered while a console and soundbar shut down overnight, a split a single master switch cannot make.

A regular strip changes where devices plug in, while a smart strip changes when they receive power, without depending on anyone's memory. Only the second behavior reduces standby power.

Smart power strip costs and payback

Arithmetic answers the question for most households. A strip that eliminates 30 watts of standby draw for 16 idle hours per day removes roughly 175 kilowatt-hours per year. At average residential rates tracked by the U.S. Energy Information Administration, that is worth approximately $30 per year, against a typical strip price of $25 to $40.

Payback near one year makes smart strips one of the cheaper efficiency purchases available, with a condition: the strip must sit where standby loads exist. A bedroom lamp gains nothing from smart control. An entertainment center or home office setup, where continuous idle draw concentrates, recovers the cost fastest.

Tracking electricity use in real time

Two paths lead to real-time usage data. A home energy monitor installs at the electrical panel, clamps onto the main service wires, and reports whole-home consumption to a phone app. Alternatively, many utilities expose near-real-time data from smart meters through a web portal at no cost, which delivers much of the same visibility without hardware.

Either way, the data becomes useful through comparison. Watch total draw for a week to establish a baseline, identify the largest loads, and check the same period a month later to confirm that any change came from behavior rather than weather.

Is the Sense energy monitor accurate?

Sense, the best-known consumer monitor, samples electrical current more than one million times per second and uses machine learning to recognize individual appliances by their electrical signatures. Whole-home totals update in real time and track the meter closely.

Device-level detection carries more caveats. Identification improves over the first several months as the system learns a home, and it performs best on large loads with distinct signatures: refrigerators, HVAC compressors, water heaters, and dryers. Small electronics, intermittent loads, and identical duplicate appliances resist reliable identification, a limitation reviewers consistently note alongside otherwise favorable assessments.

When a home energy monitor justifies its cost

A monitor saves no money by itself. What a device near $300 buys is attribution: which loads drive the bill, whether an aging appliance draws more than it should, and whether an efficiency change produced a durable result.

That information justifies the cost in specific situations. A bill that climbed without an obvious cause, a suspicion that a failing appliance runs constantly, or a desire to verify that new equipment performs as promised all give the data a job. Households whose utility already offers a smart meter portal may get most of the benefit at no cost, which makes checking the utility's website a sensible first step.

The best smart home device for saving on electricity

Ranked by verified impact, the smart thermostat leads. Heating and cooling account for nearly half of home energy use, and ENERGY STAR certified models save about 8% of those costs, roughly $50 per year, based on field data. Smart plugs and power strips come second by attacking the 5 to 10% standby share. Energy monitors inform rather than save, and smart bulbs add small standby loads of their own, 0.2 to 0.5 watts each, to stay connected.

None of these devices changes the price of a kilowatt-hour. Supply charges account for 30 to 50% of a residential bill, and competitive rates in deregulated markets run 10 to 30% below utility defaults for consumers who pursue them. CEO Today Magazine's analysis found that fewer than 20% of residential customers maintain optimal rates through manual shopping over multiple years, which is the gap automated monitoring closes. Trustpilot reviews show Arbor at 4.7 out of 5 from hundreds of verified users.

Device-level fixes shrink usage a few hundred kilowatt-hours at a time. The supply rate prices every kilowatt-hour that remains, which makes it the single largest adjustable number on most electric bills, and the one no plug, strip, or monitor can reach.

What standby power waste means for electric bills

Standby power persists because it is invisible: no single device wastes enough to notice, and the 5 to 10% household total hides across dozens of outlets. Smart plugs and strips recover that share for a modest upfront cost, monitors reveal where the rest of the bill originates, and a smart thermostat remains the largest single-device saver.

A household that works both levers, cutting standby power and usage with the right devices while paying a competitive supply rate for the electricity that remains, addresses the whole bill rather than half of it. The devices handle the kilowatt-hours. What each one costs is decided elsewhere, on the supply line of the bill.