Best smart plug with energy monitoring
Updated June 2026Independently researchedNo paid placement.
The Kasa Smart EP25 is our top recommendation for a smart plug with energy monitoring, balancing reliable performance and comprehensive app insights at a reasonable price.
The Wemo Mini Smart Plug is the best choice if you live in Apple’s HomeKit world, while the Kasa Smart EP10 offers the same essential energy tracking in a much smaller footprint.
Energy monitoring isn’t a gimmick anymore it’s how you discover that your old fridge costs you a surprising amount each month or that your AV setup draws power even when “off.” A smart plug with this feature logs real-time wattage and long-term usage, so you can curb waste and save money without guesswork. When choosing one, look for an easy-to-use companion app, reliable connectivity (Wi-Fi, Thread, or Bluetooth), and a compact shape that doesn’t block adjacent outlets. Some models also work with voice assistants or smart-home ecosystems; pick the one that fits your existing setup and won’t crowd your power strip.
Kasa Smart EP25
the do-it-all default
4.7out of 5The Kasa EP25 delivers accurate, always-on energy monitoring with a simple app interface and broad voice-assistant support. Its shape is a little bulky, but the trade-off is worth it for the detailed usage graphs and automation options. Over time, the insights can easily pay for the plug itself.
Price range: $$
Check price on Amazon →Wemo Mini Smart Plug
best for Apple Home
4.3out of 5The Wemo Mini is a HomeKit-native energy monitor that lets you control and track usage right from the Apple Home app and Siri. Setup is seamless for iPhone users, and the compact shell fits snugly in tight spaces. It’s pricier than competitors and lacks some of the advanced automation of the Kasa app, but the Apple integration is unmatched.
Price range: $$$
Check price on Amazon →Kasa Smart EP10
best compact pick
4.4out of 5The Kasa EP10 squeezes Kasa’s reliable energy monitoring into a much smaller housing that doesn’t hog the second outlet. It offers the same core app and voice control as the EP25, but the smaller shell means less room for a physical button and a slightly higher chance of warmth under heavy loads. For tight power strips or bedside lamps, it’s a great value.
Price range: $
Check price on Amazon →| Award | Model | Our score | Price | Best for | |
|---|---|---|---|---|---|
| Best overall | Kasa Smart EP25 | 4.7 / 5 | $$ | Anyone who wants a no‑nonsense energy‑monitoring plug that works with their existing voice | Check price → |
| Runner-up | Wemo Mini Smart Plug | 4.3 / 5 | $$$ | Apple users who want a seamless, no‑compromise HomeKit experience with energy data integra | Check price → |
| Best value | Kasa Smart EP10 | 4.4 / 5 | $ | Anyone who needs to plug into a crowded power strip or wants a discreet energy monitor beh | Check price → |
The picks in detail
1. Kasa Smart EP25: the do-it-all default
Best overallThe Kasa EP25 delivers accurate, always-on energy monitoring with a simple app interface and broad voice-assistant support. Its shape is a little bulky, but the trade-off is worth it for the detailed usage graphs and automation options. Over time, the insights can easily pay for the plug itself.
Pros
- Clear real-time and historical energy data in the Kasa app
- Works with Alexa, Google Home, and IFTTT out of the box
- Scheduling and away-from-home controls are straightforward to set up
- Reliable Wi-Fi connection with few dropouts reported
Cons
- Bulky design often blocks the second outlet on a duplex receptacle
- No Thread or Matter support for future‑proofing
Who it’s for
Anyone who wants a no‑nonsense energy‑monitoring plug that works with their existing voice assistant and doesn’t require a hub.Who should skip it
You need the most compact plug possible or you’re building a Thread‑based smart home and want native support without a bridge.2. Wemo Mini Smart Plug: best for Apple Home
Runner-upThe Wemo Mini is a HomeKit-native energy monitor that lets you control and track usage right from the Apple Home app and Siri. Setup is seamless for iPhone users, and the compact shell fits snugly in tight spaces. It’s pricier than competitors and lacks some of the advanced automation of the Kasa app, but the Apple integration is unmatched.
Pros
- Native HomeKit and Siri support without any hub or extra app
- Energy monitoring data visible inside Apple’s Home ecosystem
- Compact size leaves the second outlet accessible
- Thread radio in newer models improves responsiveness
Cons
- Higher price compared to similarly featured Wi‑Fi plugs
- The Wemo app is less polished and offers fewer automations
- Energy history requires poking around the app rather than being front‑and‑center
Who it’s for
Apple users who want a seamless, no‑compromise HomeKit experience with energy data integrated into their existing home view.Who should skip it
You’re on Android or you prefer a richer automation engine you’ll get more value from the Kasa EP25.3. Kasa Smart EP10: best compact pick
Best valueThe Kasa EP10 squeezes Kasa’s reliable energy monitoring into a much smaller housing that doesn’t hog the second outlet. It offers the same core app and voice control as the EP25, but the smaller shell means less room for a physical button and a slightly higher chance of warmth under heavy loads. For tight power strips or bedside lamps, it’s a great value.
Pros
- Very compact design that rarely blocks the adjacent outlet
- Same feature‑rich Kasa app and energy‑monitoring graphs as the larger EP25
- Budget‑friendly price makes it easy to outfit several sockets
- Works with Alexa and Google Home for hands‑free control
Cons
- No physical button for manual toggling (rely on app or voice)
- Feels a bit warmer than the EP25 during continuous high‑load use
Who it’s for
Anyone who needs to plug into a crowded power strip or wants a discreet energy monitor behind furniture without sacrificing functionality.Who should skip it
You want a physical on‑off switch on the plug itself, or you plan to run space heaters or other high‑draw appliances for hours on end.Best for specific needs
Best for energy‑conscious households
If your goal is to slash your electricity bill by identifying vampire power and inefficient appliances, go with the Kasa EP25. Its detailed usage graphs and easy scheduling let you track individual devices over days or months, and the reliable Wi‑Fi connection means you can check your gear from anywhere. Pair it with a few smart plugs and you’ll quickly see which electronics are worth upgrading. Our pick: Kasa Smart EP25.
Best for Apple HomeKit–only homes
When you’ve committed to Siri and the Home app, the Wemo Mini is the energy‑monitoring plug that feels native. It appears as a tile in your home dashboard, and you can ask Siri for power usage without launching a separate app. The Thread support (on newer units) makes it snappy, and the compact shape means it won’t crowd your bedside or office outlets. Our pick: Wemo Mini Smart Plug.
Best for tight spaces and travel
The Kasa EP10’s small footprint makes it ideal for power strips, behind nightstands, or when you need to fit two plugs side by side. It retains the energy‑monitoring smarts of its bigger brother, so you don’t lose any insight. Throw one in your bag for hotel rooms to track the minibar fridge or charge devices efficiently on the go. Our pick: Kasa Smart EP10.
Our verdict
For most people, the Kasa EP25 is the smartest plug to start with it offers the best balance of energy insights, voice control, and value. If Apple HomeKit is your ecosystem, spring for the Wemo Mini; if outlet space is at a premium, the EP10 delivers the same core feature set in a smaller package. Any of the three will make your home a little smarter and your bills a little lower.
Frequently asked questions
What appliances are worth monitoring with an energy smart plug?
The most revealing use cases are appliances you run regularly but whose power draw you've never measured: space heaters, window air conditioners, dehumidifiers, desktop computers and monitors, gaming consoles in standby, older refrigerators or chest freezers, and aquarium equipment. A single space heater on high draw can cost several dollars a day to run, which surprises most people when they see the real number. Smart plugs with energy monitoring can also reveal phantom loads: devices that draw meaningful power in standby, sometimes gaming consoles and older TVs. The data is most useful when it makes you change something, like scheduling a device off overnight or deciding to replace an old appliance.
How accurate are smart plug energy readings?
Accurate enough for practical decision-making, though not laboratory-grade. Most energy-monitoring smart plugs measure within a few percent of the actual draw at typical residential power levels, which is plenty accurate for comparing two appliances or estimating a monthly cost. Accuracy tends to drop slightly at very low loads (under 5 watts) or at the extremes of the plug's watt rating. For a precise comparison of two very similar appliances, the readings are directionally correct even if not perfectly calibrated. Don't use them for billing disputes with your utility, but do trust them for the 'is this costing me more than I thought?' question.
Do energy-monitoring smart plugs cost more than standard smart plugs?
Yes, typically somewhat more than a comparable plug without energy monitoring, though the gap has narrowed as the feature has become more common. The Kasa EP25 is a well-regarded example of an energy-monitoring plug that sits at a reasonable price point and is frequently discounted in multi-packs. The additional cost often pays for itself if the monitoring data leads you to change one habit, like turning off a power-hungry device you'd forgotten about, or revealing that an older appliance is cheap enough to justify replacement. Multi-packs from Kasa and similar brands reduce the per-plug cost significantly if you want to monitor multiple devices.