How to Use Smart Plugs to Reduce Your Energy Bill

How to Use Smart Plugs to Reduce Your Energy Bill

Slash Your Bills with Small Gadgets

If you’re tired of surprise energy bills, smart plugs can help. They cut phantom loads, automate schedules, and make high-use devices efficient.

For specific models with built-in meters, see our best smart plugs with energy monitoring guide, then use this how-to to set them up for real savings.

What You’ll Need

1–3 Wi‑Fi smart plugs
Smartphone or voice assistant
Stable Wi‑Fi
Target devices list
Optional energy‑monitoring plug or watt‑meter
Basic app familiarity
Editor's Choice
Amazon Smart Plug Voice-Controlled Outlet Adapter
Works seamlessly with Alexa for hands-free control
Adds Alexa voice control to any standard outlet with simple setup via the Alexa app. Compact and reliable, it supports routines, automatic reconnection after outages, and leaves the second outlet free.

1

Choose the Right Smart Plug for Real Savings

Which smart plug will actually pay for itself — the cheapest one, or the smart one that measures energy?

Pick smart plugs rated for the device’s amperage and wattage. For heavy loads — space heaters or window air conditioners — use dedicated high‑capacity plugs or avoid smart plugs entirely to prevent overloads.

Prefer smart plugs with built-in energy metering if you want precise savings data. These report watts and kWh so you can compare a lamp’s standby use to a gaming console’s peak draw and decide what to schedule off.

Our best smart plugs with energy monitoring roundup highlights options that make this tracking much easier.

Check compatibility with your home ecosystem and controls. Make sure the plug works with your Wi‑Fi, Alexa, Google Assistant, or Apple HomeKit, and that the app is reliable.

Look for these features and certifications:

Safety: UL or ETL listed
Energy metering: real‑time watts + kWh reporting
Automation: scheduling, timers, away/home modes
Performance: local processing or fast response times
Scalability: multi‑plug strips and robust scheduling rules

Read customer reviews for connection stability and support before buying to avoid future headaches.

Energy Saver
TP-Link Tapo P115 Energy-Monitoring Smart Plug
Detailed energy tracking and remote voice control
Smart Wi‑Fi plug that tracks energy use and estimates costs so you can reduce bills and optimize usage. Compact and voice-enabled for Alexa and Google Assistant, with timers, auto-shutoff, and remote control via the Tapo app.

2

Identify and Prioritize Energy Guzzlers

Want the biggest bang for your buck? Target the usual culprits — and be surprised by what drains power while ‘off’.

Walk through your home and list devices that run often or draw standby power: TVs, set‑top boxes, gaming consoles, chargers, printers, routers, coffee makers, dehumidifiers, and space heaters.

Use an energy‑monitoring smart plug or a handheld watt meter to measure baseline consumption for 24–72 hours. Record average watts and typical daily hours to calculate usage.

Calculate kWh: (watts × hours) / 1000 = kWh per day

Multiply kWh by your electricity rate to estimate cost. Prioritize devices with high continuous draw, long run times, or things you forget to switch off. Compare example: a 30 W device on 24/7 consumes ~0.72 kWh/day; at $0.15/kWh that’s about $0.11/day or $40/year. Skip small, low‑draw items unless automation adds convenience. Mark top candidates for smart plug installation based on potential annual savings and how often you’ll need to interact with them.

Advanced Metering
Upgraded Watt Power Meter Plug Energy Monitor
Comprehensive measurements with backlit multi-mode display
Plug-in power meter that displays watts, kWh, volts, amps, power factor, cost and more across seven display modes. It features a large backlit screen, adjustable overload protection, and data memory to track consumption over time.

3

Install and Configure Smart Plugs Safely

Don’t just plug in — set up for efficiency and safety. Avoid rookie mistakes that waste time or create hazards.

Install plugs into accessible outlets and plug devices into them.
Update the smart plug firmware first.
Connect the plug to your home Wi‑Fi using the manufacturer’s app and name each plug clearly (e.g., “Living Room TV” or “Coffee Maker”).
Assign plugs to rooms or groups for easier control.
Create initial schedules: overnight cutoffs for entertainment gear (e.g., 11pm–7am), work‑hour control for office equipment (9am–5pm), and short preheat times for kettles or heaters only when needed (e.g., 5 minutes before use).

Verify load rating: Don’t use small consumer plugs for space heaters or central HVAC.
Enable energy reporting: Track consumption when available.
Link to assistants: Connect to Alexa, Google Assistant, or your smart home hub.
Test automations: Confirm manual on/off and schedules switch reliably.

Document changed devices and keep automatic firmware updates enabled.
Avoid daisy‑chaining plugs and ensure ventilation around the smart plug.

Best Seller
Kasa Smart Plug Mini 4-Pack Compact Design
Space-saving design with voice and app control
Four ultra-compact smart plugs that add app and voice control to lamps, fans, and small appliances without blocking the second outlet. No hub required — supports schedules, Away Mode, and works with Alexa, Google Assistant, and SmartThings.

4

Automate, Monitor, and Optimize for Ongoing Savings

Treat smart plugs like a tiny energy team: automation cuts waste, and data proves the savings.

Use simple schedules to cut waste — auto-off TVs after midnight, stop chargers at 100%, and run coffee makers only before you wake. For a broader plan, our smart home setup guide for beginners helps you decide which rooms and devices to prioritize.
Integrate motion or occupancy sensors to switch off lights or entertainment when rooms are empty.
Review energy reports weekly to spot anomalies and fine‑tune run times and thresholds.
Seasonally adjust schedules for heating or cooling needs to avoid unnecessary runtime.
Combine smart plugs with smart strips for clusters of peripherals and use scenes to turn multiple devices off with one command.
Track cumulative kWh and cost reductions to validate savings and tweak priorities.

Quick automation ideas:

Set TV auto‑off 11pm–7am and stereo off after 1 hour idle.
Cut chargers when battery hits 100% or after a fixed hour.
Preheat kettles 5–10 minutes before wake time.

Maintain your system by applying firmware updates, checking app logins, and replacing problematic plugs. Over months you’ll find which automations deliver the most savings and where small behavior changes can multiply returns.

Top Choice
Kasa HS300 Smart Power Strip Six-Outlets
Six independently controlled outlets plus three USB ports
Smart power strip with six individually controllable outlets, three USB charging ports, surge protection, and energy monitoring to track usage. Control each outlet remotely or with voice via Alexa and Google Assistant for safer, smarter power management.

Start Small, Save Big

Install a few smart plugs, monitor results, and expand where savings are clear. Simple automation and periodic review cut standby draw and lower bills noticeably — are you ready to start saving?

If you want more ideas on where to plug in next, our best smart plugs with energy monitoring and best home energy monitors for smart homes guides offer plenty of tested options.

More Smart Home Energy Guides

Ready to try different models in your own home? Visit our Smart Plugs & Energy Monitors category for more recommendations and how-to guides.

Abdul Basit
Abdul Basit

Abdul Basit is a tech writer and publisher who runs a small network of sites focused on software, smart home devices, and online deals. He writes every blog post himself, checking real offers and explaining everything in simple language so everyday users can spot genuine discounts, avoid fake coupon codes, and save money without wasting time.

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18 Comments

  1. I tried the guide’s “Start Small, Save Big” advice and it actually works. Here’s my step-by-step from last month:
    1) Identified the microwave, old printer, and coffee maker as guzzlers.
    2) Bought three smart plugs with energy reporting.
    3) Scheduled the printer and coffee maker to shut off overnight and when not in use.
    4) Monitored results and swapped the microwave out later.
    Ended up saving ~8% on one bill. Not massive, but steady — and it required almost zero effort after setup.

    • Curious — what model of smart plug gives you reliable energy numbers? Some of mine show weird spikes when the device is off.

    • Rachel: I started with a simple schedule (weekday mornings) — geofencing felt like overkill for this. Scheduling + manual overrides in the app worked best for me.

    • Spikes can be due to firmware or how often the plug polls energy usage. If readings look off, try updating firmware or checking the polling interval in the app. If it persists, contact the manufacturer.

    • Fantastic breakdown, Oliver — exactly the kind of incremental approach we hoped readers would try. 8% is a great win for minimal effort.

  2. Loved the guide — super practical!
    I started with just two smart plugs on my TV and coffee maker and already noticed a slight dip in standby power usage.
    Tip for newbies: label the plugs when you install them so you don’t forget what controls what. 👇
    Also, the section on prioritizing guzzlers helped me realize my old gaming PC was the worst offender.
    Question: anyone else use power tracking on the plug app to set weekly targets?

    • I labelled mine with little color dots — saved me a bunch of confusion. Also, if the TV has a ‘quick start’ mode, turn that off; it eats standby power. 🙂

    • Yep — I do weekly tracking. The app graphs make it obvious when I forget to turn something off. Pro tip: combine with a schedule so gaming rig shuts down after midnight.

    • Thanks Maya — glad it helped! Labeling is a great habit. If your smart plug supports energy monitoring, set a baseline week then create a small reduction target (5–10%) to start — easier to stick with.

  3. Short and useful. I was a bit overwhelmed by the choices in “Choose the Right Smart Plug” — anyone brand-recommendations that are both reliable and have energy monitoring?

    • I use a mid-range model with energy monitoring and it’s been solid. Avoid super-cheap unknown brands — they may lack safety features.

    • We stayed neutral in the guide but look for plugs with certified safety ratings (UL/ETL), clear energy-monitoring features, and strong app reviews. Compatibility with your smart home ecosystem (Alexa/Google/HomeKit) matters too.

  4. This guide made me laugh a bit — ‘Slash Your Bills with Small Gadgets’ sounds dramatic but it works 😂
    A tiny rant: smart plug apps sometimes feel like they were coded in 2007. Why is UI so bad? Still, the automation section helped me set up a night routine where lights and chargers die at 11pm. Feels like domestic victory.

    • Thanks everyone — gonna try the aggregator idea. Also, anyone else feel smug unplugging chargers now? Small pleasures 🤷‍♀️

    • I used a smart home app that aggregates devices and it made scheduling much easier. Worth the extra setup if you have a few plugs.

    • Haha yes, those clunky apps are the norm. If you’re into more polished interfaces, try integrating with a third-party hub (if supported) — sometimes that gives a better control experience.

    • Totally agree on the app UX — it’s hit-or-miss. Good to hear the night routine is giving you wins though. Little automations add up over time.

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