TL;DR: A smart power strip eliminates phantom load — the electricity devices draw while “off” — which accounts for 5–10% of home energy use. One strip protecting a TV or computer setup pays for itself in under a year through energy savings alone.
Best Smart Power Strip for Energy Saving: Cut Phantom Load Without Thinking About It
Devices in standby mode still draw power. A TV on standby, a game console in rest mode, a printer that’s “off” — each pulls 1–20 watts continuously. Across a living room or home office setup, this adds up to 50–150 watts of phantom load running 24 hours a day. A smart power strip detects when the primary device powers down and cuts power to all secondary outlets automatically, eliminating phantom load without requiring any behavior change from the user.
This is one of the few energy efficiency upgrades that works passively — there’s nothing to remember, no app to check, no habit to build. You plug in once, configure the primary device outlet, and the strip handles everything else. At $30–50, it’s cheaper than a single month’s energy audit and returns measurable savings within the first year.
Top Smart Power Strips
How Smart Power Strips Work
Most energy-saving power strips use one of two mechanisms: current sensing or timer-based switching. Current-sensing strips are the more effective type — they monitor the amperage drawn by the “control” outlet (where your TV or computer is plugged in) and switch the secondary outlets on or off based on whether the primary device is active or in standby. When your TV drops below the threshold wattage indicating it’s off, the strip cuts power to the soundbar, Blu-ray player, and gaming console simultaneously.
The sensitivity threshold matters. Cheap current-sensing strips have a fixed threshold that may not detect the difference between your TV being on (50W+) versus in standby (2–5W) reliably. Quality strips offer an adjustable threshold (typically 10–100W range) so you can calibrate for your specific primary device’s power signature. This calibration step takes 5 minutes at setup and makes the strip work correctly for the device’s entire lifespan.
Wi-Fi smart power strips add scheduling, usage monitoring per outlet, and remote control via app. These are genuinely useful for monitoring which devices consume the most energy, but add complexity and a dependency on a connected app. For pure phantom load elimination, a current-sensing strip without Wi-Fi is more reliable long-term and has no subscription or connectivity requirements.
Smart Power Strip Types Compared
| Type | Phantom Load Elimination | Setup Complexity | Energy Monitoring | Best For |
|---|---|---|---|---|
| Current-Sensing | Automatic, passive | Low (plug in, set threshold) | No | TV/AV, desktop computer |
| Timer-Based | Scheduled only | Low | No | Predictable routines |
| Wi-Fi Smart Strip | Manual or scheduled | Medium (app setup) | Per-outlet monitoring | Full home energy tracking |
| Standard Power Strip | None | None | No | Basic surge protection |
Best Setups for a Smart Power Strip
The highest-impact use is an entertainment center. A TV as the control device, with a soundbar, streaming stick, gaming console, and Blu-ray player on the switched outlets, can eliminate 50–100W of combined standby draw. At average US electricity rates, that’s $50–100 per year saved on a single strip — a payback period of 4–6 months.
A home office setup with a computer as the control device works similarly: monitor, desk lamp, speakers, printer, and USB hub on switched outlets. When the computer sleeps or shuts down, everything powers off. This is especially valuable for households where computers are left in sleep mode rather than shut down — a sleeping desktop still uses 1–5W, but the peripherals connected to it may draw 20–40W in their own standby states.
Home workshop tools benefit from always-on and always-switched outlet configurations. Many smart strips include one or two “always on” outlets for devices that genuinely need to stay powered (a router, a phone charger) alongside the switched bank.
Pairing With Other Home Energy Efficiency Swaps
Smart power strips address phantom load — one of three major categories of residential energy waste. The others are lighting (replaced by low-energy LED bulbs) and water heating. For hot water, see our low-flow showerhead guide — reducing hot water use cuts both water and energy consumption simultaneously. If you’re tracking the overall impact of your home energy swaps, the solar cooking guide covers the next level of energy independence for outdoor and emergency use.
More Zero-Waste Swaps
Reduce home energy waste further or browse smart power strips on Amazon:
- Low-energy LED bulbs — the complementary lighting upgrade to phantom load reduction
- Low-flow showerhead — cuts hot water energy use alongside direct water savings
- Solar oven cooker — eliminate cooking energy entirely for outdoor and emergency use
FAQ: Smart Power Strip
How much electricity does a smart power strip actually save?
Depends on what’s plugged in. A typical entertainment center setup saves 50–100 kWh per year, worth $7–15 at average US electricity rates. A home office setup can save a similar amount. The ENERGY STAR program estimates that smart power strips save the average household $100–200 over the life of the product across all installations.
Will a smart power strip work with any TV?
Yes, with a caveat. Modern OLED and QLED TVs draw very little power in standby (often under 0.5W), which can be below a fixed-threshold strip’s detection floor. Use a strip with an adjustable sensitivity threshold and set it to the lowest available setting (typically 10W) to reliably detect when these efficient TVs turn off. Older plasma and LCD TVs with higher standby draws work with any current-sensing strip.
Is it safe to plug a computer into a smart power strip?
Yes — plug the computer itself into the control outlet (never the switched outlets). The strip monitors the computer’s power draw to determine when it’s active. Devices that must not lose power unexpectedly (external hard drives with active writes, NAS devices) should use the always-on outlets, not switched ones.
Do smart power strips provide surge protection?
Most do, but check the joule rating. A strip rated under 400 joules provides minimal protection. For electronics like TVs and computers, look for 1000+ joules surge protection. Some energy-monitoring smart strips omit surge protection to reduce cost — verify before using with high-value electronics.
Can I use a smart power strip with a gaming console?
Yes, with one consideration: some consoles (PS5, Xbox Series X) download updates and patches while in rest/standby mode. If you want this feature to continue working, plug the console into an always-on outlet and put the TV on the control outlet instead. The TV’s on/off state then governs the other peripherals (soundbar, HDMI switch) while the console remains powered for background downloads.
