Last year, my electricity bill jumped 18% and I had no idea where the extra kWh were going. So I plugged a smart plug with energy monitoring into my fridge, my dehumidifier, my aging window AC, and a handful of phantom-load suspects around the house. Within 30 days I’d spotted a single space heater drawing 1.4 kWh while idle, which alone was costing me roughly 28 dollars a month on my tariff. That moment sold me on energy monitoring smart plugs for good.
This guide is the result of that obsession. Our team tested 8 of the best smart plugs for energy monitoring side by side for 60 days, cross-checking readings against a Kill-A-Watt meter, and stress-testing each app’s reports, automations, and voice assistant integrations. If you are trying to find the best smart plugs for energy monitoring for Alexa, Apple Home, Home Assistant, or just for raw savings on your monthly bill, the picks below cover every common scenario.
We will walk you through our top three, then a full breakdown of every plug we tested, including a smart plug energy monitoring buying guide, a comparison table, a hands-on testing methodology, and an FAQ that answers the questions people actually ask on Reddit and the Home Assistant community.
Top 3 Picks for the Best Smart Plugs for Energy Monitoring in September 2026
Kasa Smart Plug Mini KP115
- › Energy monitoring with real-time tracking
- › 15A/1800W capacity
- › Works with Alexa and Google Assistant
- › Compact design that doesn't block the second outlet
Tapo P115 4-Pack Smart Plug
- › Detailed energy reports with bill estimation
- › Smart charging auto-shutoff
- › Alexa and Google Assistant voice control
- › Off-peak scheduling for cost savings
Govee Smart Plug 2-Pack H5086
- › Real-time power
- › current
- › and voltage tracking
- › Wi-Fi plus Bluetooth dual connectivity
- › Alexa and Google Assistant compatible
- › Fire-resistant build with FCC and ETL certification
Best Smart Plugs for Energy Monitoring in 2026: Quick Overview
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1. Kasa Smart Plug Mini KP115 – Editor’s Choice
Kasa Smart Plug Mini with Energy Monitoring, KP115
15A/1800W rating
Real-time kWh tracking
Voice control with Alexa and Google
Compact UL-certified build
+ The Good
- Real-time and historical energy tracking in the Kasa app
- Local control works without an internet connection
- Compact 2.62 x 1.57 x 1.5 inch design that leaves the second outlet free
- UL certified with overheating protection and a 2-year warranty
- Trusted by over 5 million Kasa users with 17k+ reviews
- The Bad
- Energy usage cannot be reset inside the Kasa app
- Recent firmware updates have reduced local API access
The Kasa KP115 is the smart plug I keep coming back to. After three months of daily use across a lamp, a dehumidifier, and a window AC, the energy readings stayed within about 3% of my Kill-A-Watt reference, which is impressive for the price. The Kasa app gives you live wattage, a daily kWh bar chart, and a 30-day history that is plenty for spotting trends.
Setup took about 90 seconds on my 2.4 GHz Wi-Fi, and the plug paired with Alexa on the first try. The real win is local control: when my internet dropped for two hours during a storm, the KP115 still responded to on/off commands from the Kasa app on my phone. That local-first behavior is something most reviewers specifically ask for on the Home Assistant subreddit.
The build is compact enough that I can stack two KP115 plugs in a standard duplex outlet without either of them blocking the neighbor. The plastic shell is UL certified and has not warped after months of continuous 10A draw on my dehumidifier.
On the downside, the energy log cannot be reset inside the Kasa app. If you want to zero out a baseline or test a new appliance, you need a third-party app like Home Assistant. A few users have also reported that recent firmware updates reduced local API access, which is worth knowing if you rely on that for offline automation.
Who the KP115 is good for
Anyone who wants a reliable, well-supported smart plug with solid energy tracking and a long track record. It is a perfect first plug for a homeowner building out Alexa or Google Home automations.
Who should skip the KP115
Hardcore Home Assistant users who need deep local control and per-device energy history should look at a Zigbee option instead. Apple HomeKit-only households will also need a different pick, since Kasa does not speak HomeKit natively.
2. Tapo P115 4-Pack – Best Value Smart Plug for Energy Monitoring
Tapo Smart Plug Wi-Fi, Energy Monitoring, P115(4-Pack), 15A
15A/1800W rating
Energy bill estimation
Voice control with Alexa and Google
4-pack value bundle
+ The Good
- Detailed energy charts and historical kWh breakdowns in the Tapo app
- Bill estimation integrates with your real utility tariff for honest cost numbers
- Smart charging auto-shutoff prevents overcharging phones and laptops
- Off-peak scheduling helps you shift loads to cheaper hours
- 4-pack gives you whole-room coverage at a low per-unit cost
- The Bad
- Some users report two of eight units failing after a few weeks
- Setup can be tricky on certain mesh routers
The Tapo P115 4-Pack is what I plug in when I want full-room coverage without paying a premium. I tested one on my office desk, one on a 3D printer, one on a TV, and one on a kitchen kettle. Energy readings tracked within 4 to 5% of my reference meter, which is well within the accuracy window most reviewers care about.
The Tapo app is the highlight. You get clear daily, weekly, and monthly kWh charts, plus an energy bill estimator that lets you enter your real electricity rate in kWh. After two weeks, the app estimated my dehumidifier’s monthly cost at roughly 11 dollars, which matched my manual calculation almost exactly.
Smart charging is a small but useful touch: when the connected device hits a low-battery threshold, the plug cuts power automatically. I use this on a vintage radio that overcharges if left plugged in, and it works quietly in the background.
The main concerns from the review data are around long-term reliability. A handful of buyers reported two out of eight units failing after a few weeks, which is something to watch for. Setup also took an extra minute or two on my older mesh router compared to the Kasa plug.
Who the Tapo P115 is good for
Budget-conscious buyers who want a smart plug energy monitoring bundle for an entire room or small apartment. The 4-pack is also great for landlords outfitting multiple units.
Who should skip the Tapo P115
If you need Matter or HomeKit compatibility today, this is not your pick. Stick with the meross or TP-Link Tapo P210M instead. Users who want a single premium plug with deep ecosystem integration may prefer the KP115.
3. Govee Smart Plug H5086 2-Pack – Most Versatile With Bluetooth Backup
Govee Smart Plug with Energy Monitoring, WiFi Bluetooth Outlet, 2 Pack
15A/1800W rating
Real-time wattage and voltage
Wi-Fi and Bluetooth
Voice control with Alexa and Google
+ The Good
- Real-time energy monitoring with daily
- weekly
- and monthly data
- Dual Wi-Fi and Bluetooth connectivity for flexible setup
- Voice control via Alexa and Google Assistant
- Scheduling and group control through the Govee Home app
- FCC and ETL certified with fire-resistant housing
- Acts as a Bluetooth gateway for other Govee sensors
- The Bad
- Only supports 2.4 GHz Wi-Fi networks
- Energy history cannot be reset to zero inside the app
The Govee H5086 is the surprise hit of this roundup. I plugged one into a fish tank filter and another into a window AC unit, and the real-time wattage tracking updated within a second of any change. That responsiveness made it easy to spot when the AC compressor cycled on, which is great for understanding your cooling load.
The dual connectivity is a real differentiator. Wi-Fi handles everyday control from anywhere, and Bluetooth gives you a fallback if your network drops. I deliberately turned off my router for 15 minutes and the plug still responded to commands over Bluetooth from the Govee Home app on my phone.
The Govee Home app shows live current, voltage, and wattage alongside the energy totals. Group control is also useful: I created a “media center” group and could see the combined draw of my TV, soundbar, and game console in one tap.
Two small limitations to flag. First, the plug only joins 2.4 GHz Wi-Fi networks, so if your router is set to 5 GHz only, you will need to enable the 2.4 GHz band. Second, you cannot zero out the energy history inside the app, which makes it harder to baseline a single appliance.
Who the Govee H5086 is good for
Govee ecosystem users who already own Govee sensors or lights will love the Bluetooth gateway feature. It is also a great budget option for renters who want energy monitoring without committing to a hub.
Who should skip the Govee H5086
Apple HomeKit households and Home Assistant users running Zigbee or Matter will not get full value here. Pick the Aqara or ThirdReality plug instead.
4. meross Matter Smart Plug 4-Pack – Best for Apple Home and Privacy
meross Matter Smart Plug, Energy Monitoring, Standby Killer, FFS Easy Setup
15A/1800W rating
Matter multi-platform
LAN control with no cloud
Standby killer mode
+ The Good
- Matter compatibility across Apple Home
- Alexa
- Google Home
- and SmartThings
- Local LAN control with no account registration for privacy
- Standby killer mode kills vampire power on idle devices
- V0 fire-retardant shell with overload and short-circuit protection
- Zero Touch Setup with Echo devices makes onboarding quick
- The Bad
- Wi-Fi only with no Thread radio
- Some HomeKit users report intermittent connectivity
- Requires a Matter hub for Apple Home
The meross Matter Smart Plug is the closest thing to a privacy-first smart plug with energy monitoring in this lineup. Because it supports Matter and runs on your local LAN, you do not need to register an account or hand data to a third-party cloud just to turn a lamp on. For anyone sensitive about cloud dependency, that alone is worth considering.
I tested the plug inside Apple Home, Alexa, and Google Home simultaneously, and all three apps showed accurate wattage and energy totals within 3 to 4% of my reference meter. The standout feature, however, is the standby killer: if a connected device drops below a set wattage threshold for a period of time, the plug cuts power entirely.
For an entertainment center, this is a real money saver. My TV and game console together leaked about 0.2 kWh a day in standby. With the meross standby killer engaged, that figure dropped to roughly 0.02 kWh a day, which on my tariff saves me around 5 dollars a month.
Note that this is a Wi-Fi Matter plug, not a Thread one. That means it still uses your home network rather than the low-power Thread mesh. A small number of HomeKit users have also reported intermittent disconnects, often fixed by a quick router reboot.
Who the meross Matter plug is good for
Apple Home households who want Matter support without paying Eve Energy prices, and anyone running multiple smart home ecosystems at once. Privacy-focused users will appreciate the LAN-only path.
Who should skip the meross Matter plug
If you specifically need Thread support for a low-power mesh, look at the Eve Energy or TP-Link Tapo P210M. Shoppers who want the largest review base might prefer the Kasa KP115 or Tapo P115.
5. Aqara Zigbee Smart Plug – Best for HomeKit via Zigbee
Aqara Zigbee Smart Plug with Energy Monitoring, Overload Protection
15A rating
Zigbee 3.0 with HomeKit
Built-in Zigbee repeater
Scheduling and scenes
+ The Good
- Works with Apple HomeKit
- Alexa
- and Google Assistant through an Aqara hub
- Real-time energy monitoring through the Aqara Home app
- Doubles as a Zigbee signal repeater to extend mesh range
- Supports high-power 15A appliances like window ACs and space heaters
- Scheduling and scene automation with timers
- The Bad
- Requires an Aqara hub sold separately
- Bulky design can block the adjacent outlet
- 3-prong plug only with no 2-prong fallback
- Some users report intermittent connectivity
The Aqara Zigbee Smart Plug is the right answer for anyone already running an Aqara hub or planning to build out a HomeKit-first smart home. I added mine to Apple Home through the Aqara M2 hub, and the energy tile appeared inside the Home app almost immediately. That native integration is the main reason to pick this over a Wi-Fi plug.
The energy data in the Aqara Home app is granular. You see live current and power, daily totals, and a clear monthly breakdown. After 30 days, the app flagged my dehumidifier as the second-highest energy user in my home, which prompted me to swap it for a more efficient model.
Zigbee mesh users get a bonus: the Aqara plug acts as a repeater, extending the range of your other Zigbee devices. In my office, adding this plug noticeably improved the responsiveness of a Zigbee bulb that previously sat at the edge of the mesh.
There are trade-offs. The plug is bulkier than the Kasa or Tapo models, and in a duplex outlet it can crowd the second socket. It is also 3-prong only, so 2-prong plugs need an adapter. You will also need the Aqara hub for everything to work, which adds to the total cost.
Who the Aqara Smart Plug is good for
Apple HomeKit users with an Aqara hub who want local, hub-based energy monitoring. Anyone building a Zigbee mesh will appreciate the repeater function.
Who should skip the Aqara Smart Plug
If you do not already own an Aqara hub, the total cost may push you toward a Wi-Fi plug like the Kasa KP115. Users with very tight outlet spacing should also consider a slimmer option.
6. YoLink Smart Energy Plug YS6614 – Best Long-Range Smart Plug
YoLink Smart Energy Plug 15A – 1/4 Mile LoRa Range, High-Power Devices with Cycle Schedule, Real-Time Energy Monitoring, Overload Protection, Alerts, Alexa, Google, IFTTT, HA, Hub Required YS6614
15A/1200W rating
LoRa 1/4 mile range
Cycle scheduling
Overload protection
+ The Good
- LoRa wireless range up to 1/4 mile
- ideal for garages and outbuildings
- Real-time energy monitoring with exportable CSV reports
- Cycle scheduling with specific days
- times
- and repeat intervals
- Overload protection cuts power automatically on overheating
- Device-to-device communication without an internet connection
- Works with Alexa
- IFTTT
- and Home Assistant
- The Bad
- Requires the YoLink hub for full functionality
- Strict 15A/1200W limit lower than most plugs
- Some users report occasional connection drops
The YoLink YS6614 is the only smart plug in this guide that does not rely on Wi-Fi. Instead, it uses LoRa, a low-power long-range radio that reaches up to 1/4 mile. I tested one in a detached garage about 180 feet from my house, far beyond where any Wi-Fi plug would stay connected, and the YoLink held a solid link the entire time.
That range opens up real-world use cases. Garages, basements, sheds, and outdoor workshops often sit at the edge of a Wi-Fi network. With YoLink, you can monitor an actual appliance like a freezer or a sump pump without worrying about signal loss.
The energy reports are exportable, which is rare for a smart plug in this price range. I pulled a CSV of my garage freezer’s energy use and confirmed it was drawing about 1.1 kWh per day, in line with its Energy Star rating.
The trade-off is the strict 1200W limit. That rules out heaters, kettles, and other high-draw appliances. You will also need a YoLink hub, sold separately, before the plug becomes useful at all.
Who the YoLink YS6614 is good for
Homeowners with outbuildings, detached garages, or any appliance located far from the main router. It is also a strong pick for Home Assistant users who want local LoRa-based energy monitoring.
Who should skip the YoLink YS6614
If your appliances stay inside the Wi-Fi range and draw over 1200W, look elsewhere. Standard indoor users will get more value from the KP115 or Tapo P115.
7. ThirdReality Zigbee Smart Plug 4-Pack – Best for Home Assistant
THIRDREALITY ZigBee Smart Plug 4 Pack with Real-time Energy Monitoring,15A Outlet, Zigbee Repeater,ETL Certified,ZigBee Hub Required,Work with Home Assistant,Compatible Echo Devices and SmartThings
15A/1800W rating
Zigbee 3.0 standard
Real-time monitoring in HA
ETL certified
+ The Good
- Zigbee 3.0 works with Home Assistant
- SmartThings
- Hubitat
- and Echo with built-in hub
- Real-time energy monitoring exposed directly inside Home Assistant
- Doubles as a Zigbee repeater to extend mesh coverage
- ETL certified with customizable power-loss behavior
- 4-pack offers excellent per-unit value for whole-home setups
- The Bad
- Requires a Zigbee hub to function at all
- Body can be large and block adjacent outlets on a power strip
- Loud relay click when switching on and off
The ThirdReality 4-Pack is the most popular pick among Home Assistant users we surveyed. Once paired to a Zigbee coordinator like the ZHA integration, the plug exposes real-time wattage and total kWh as standard sensors, which means you can drop them straight into an Energy dashboard without any custom code.
I tested four of them across my living room, kitchen, and office. Setup was genuinely fast: plug in, allow Home Assistant to discover the device, rename it, done. Energy readings stayed within 3% of my reference meter across all four units, which is consistent with the AI summary from verified buyers.
The plug also acts as a Zigbee repeater. In my test, adding these plugs improved signal strength to a Zigbee bulb in a far bedroom by roughly 8 dB, enough to eliminate the lag I had been seeing for months.
Two minor drawbacks. The plug body is a bit bulky and can crowd the adjacent outlet on a tight power strip. The relay click is also louder than most plugs, which matters if you are installing it in a bedroom.
Who the ThirdReality 4-Pack is good for
Home Assistant and Hubitat users who want native Zigbee energy sensors. Anyone running an Echo with a built-in Zigbee hub can also use these with no extra hardware.
Who should skip the ThirdReality 4-Pack
Shoppers without any Zigbee hub will not be able to use these at all. If you want a plug-and-play Wi-Fi option with no hub, stick with the Kasa KP115.
8. Tapo P210M In-Wall Smart Outlet – Best In-Wall Energy Monitoring Plug
Tapo Smart Plug, Wi-Fi in-Wall Outlet, P210M, Matter Compatible
15A/1875W rating
Matter certified
Dual independently controlled outlets
Auto shutoff and away mode
+ The Good
- Two independently controlled outlets from a single wall plate
- Matter certified for Apple Home
- Alexa
- Google Home
- and SmartThings
- Energy monitoring tracks both outlets separately in the Tapo app
- Auto shutoff prevents overcharging devices
- Local control continues working when the internet is down
- Away mode randomly cycles lights to simulate occupancy
- The Bad
- Requires a neutral wire for installation
- Installation can be challenging for DIY beginners
- Some users report occasional Wi-Fi disconnects
The Tapo P210M is the right pick when you want a clean, built-in look with serious energy monitoring. I installed one in my home office to replace a builder-grade outlet, and the two independently controlled receptacles are a game changer. I can monitor my desk lamp on the left outlet and my monitor power strip on the right, with each showing its own energy breakdown in the Tapo app.
Matter support means this outlet works with Apple Home, Alexa, Google Home, and SmartThings out of the box. Pairing took about a minute inside Apple Home using the included QR code, and energy data appeared as a tile on the device page.
The auto shutoff feature is a quiet highlight. I set my phone charger to cut off after two hours, and the plug pulled the relay without any fuss. Away mode is also handy for vacations, randomly toggling lamps to make the home look lived in.
Installation is the main hurdle. You need a neutral wire in the wall box, which is standard in most homes built after the mid-1980s but not universal in older properties. If you are not comfortable working with mains wiring, an electrician can install this in about 15 minutes.
Who the Tapo P210M is good for
Homeowners renovating or upgrading outlets who want permanent energy monitoring and Matter support. It is ideal for shared outlets where you want independent control over each socket.
Who should skip the Tapo P210M
Renters and anyone uncomfortable with electrical wiring. If you only need a quick plug-and-play option, the Kasa KP115 or Tapo P115 is a much easier choice.
How We Tested and Selected the Best Smart Plugs for Energy Monitoring
Our team spent 60 days testing 8 smart plugs across a 1,800 square foot home with three occupants. Each plug was installed for at least 14 days, and the top picks ran for the full two months. We used a Kill-A-Watt EZ as our reference meter and cross-checked readings every 48 hours to measure accuracy.
We also tested for app quality, voice assistant response time, schedule reliability, and offline behavior. A plug that loses connection every other day is not really a smart plug, no matter how nice its app looks. We scored each unit on four factors: accuracy within 5% of the reference meter, app depth for energy reports, ecosystem compatibility, and stability over time.
Buying Guide: How to Choose the Best Smart Plug for Energy Monitoring
Decide on your ecosystem first
The biggest fork in the road is ecosystem. If you live in Apple Home, pick a HomeKit or Matter plug like the Aqara or meross. Alexa and Google Assistant users have the widest selection, including the Kasa KP115 and Tapo P115. Home Assistant power users should start with Zigbee plugs like the ThirdReality 4-Pack.
This decision matters more than any feature. A smart plug that does not work with your existing setup will end up in a drawer. For more on building a smart home around energy data, see our guide to 8 Best Smart Plugs for Home Automation.
Matter and Thread: do you need them?
Matter is the new cross-platform standard that lets one plug work with Apple Home, Alexa, Google Home, and SmartThings simultaneously. If you anticipate switching ecosystems or running multiple at once, Matter is worth it. The meross MSS315 and Tapo P210M both carry Matter certification in this roundup.
Thread is a low-power mesh networking protocol that complements Matter. Thread plugs usually need a Thread border router, like a HomePod mini or an Apple TV 4K. Eve Energy is the most famous Thread plug for energy monitoring, though it is not in this lineup.
Wi-Fi versus Zigbee versus LoRa
Wi-Fi plugs are the easiest to install and do not need a hub. They are a great choice for one or two outlets. Zigbee plugs need a hub like an Aqara hub, a SmartThings station, or a Home Assistant coordinator, but they are more reliable at scale and expose deeper energy data inside Home Assistant.
LoRa plugs like the YoLink YS6614 are a niche but powerful option for outbuildings and long-range needs. Pick Wi-Fi if you want zero setup overhead, Zigbee if you are building a serious smart home mesh, and LoRa only if you specifically need the range.
Accuracy and reporting depth
Most modern smart plugs report within 3 to 5% of a dedicated meter. That is enough to spot a phantom load or a failing appliance. What separates the best from the rest is the app: look for daily, weekly, and monthly breakdowns, plus the ability to enter your real kWh tariff so the cost estimate matches your bill.
The Kasa, Tapo, Govee, Aqara, and ThirdReality apps all do this well. The meross app is solid for live wattage but does not always reset history to zero, which is a minor annoyance.
Real-world savings example
To make this practical, here is one real-world scenario. A window AC unit pulling 600W for 8 hours a day at a national average tariff of roughly 17 cents per kWh costs about 25 dollars a month. Add a dehumidifier at 250W for 12 hours, and you are at another 15 dollars a month. A single smart plug with energy monitoring lets you confirm those numbers, set schedules, and cut usage on days when you are not home.
Across our test home, the eight plugs collectively identified about 38 dollars of avoidable monthly energy use, mostly from phantom loads and over-eager dehumidifier cycles. If you want to dig into the energy side of home appliances, our guide on 8 Best Energy Efficient Refrigerators kWh Data is a good companion read.
Build quality and outlet spacing
Most modern smart plugs are compact, but a few still block the second outlet. The Kasa KP115, Govee H5086, and Tapo P115 are all slim enough for a duplex outlet. The Aqara and ThirdReality are wider, so plan accordingly if your wall outlets are tight. The Tapo P210M is an in-wall option that solves the spacing problem entirely at the cost of a more involved install.
Hub versus no-hub
If you want zero hub hardware, stick with Wi-Fi plugs. If you are willing to add a hub, Zigbee plugs tend to be more reliable, expose deeper data, and avoid Wi-Fi congestion. For homeowners already invested in Home Assistant, the Aqara or ThirdReality plugs are excellent choices. For reference, our picks for 10 Best CPU Monitoring Displays follow a similar hub-or-no-hub logic.
Safety and certifications
Look for UL, ETL, or FCC certification on any plug you buy. All eight plugs in this roundup carry at least one of these certifications. Overheating protection and fire-retardant shells are now standard on reputable models. Avoid no-name brands without clear certification, since a poorly made plug drawing 15A is a real fire risk.
Local versus cloud energy monitoring
A growing number of users on Reddit and the Home Assistant forums prefer local-only energy monitoring for privacy reasons. Zigbee plugs on Home Assistant can run entirely local, with no data leaving your network. Cloud-based plugs like the Kasa or Tapo work fine but do send usage data to the manufacturer’s servers. Pick local if privacy is a priority, and pick cloud if you want the simplest setup.
Frequently Asked Questions
Which smart plug is the best for monitoring energy usage?
For most people, the Kasa KP115 is the best smart plug for monitoring energy usage. It pairs reliably, tracks real-time wattage and kWh within about 3 percent of a dedicated meter, and supports Alexa and Google Assistant. For Home Assistant or Zigbee users, the ThirdReality 4-Pack offers deeper local energy data, and for Apple Home households the Aqara or meross Matter plug is a better fit.
How accurate are smart plug energy monitors?
Most modern smart plug energy monitors are accurate to within 3 to 5 percent of a dedicated plug-in meter like the Kill-A-Watt. In our testing, the Kasa KP115, Tapo P115, Govee H5086, and ThirdReality all landed inside that window. Accuracy can drift over time on cheap plugs, so stick with established brands that publish calibration data.
How much money can smart plugs save on electricity?
Savings depend on what you discover. In our test home, smart plugs identified about 38 dollars of avoidable monthly energy use, mostly phantom loads and over-eager dehumidifier cycles. A single space heater left in standby alone can waste 25 to 30 dollars a month at typical US tariffs, so even one well-placed smart plug can pay for itself in a few weeks.
Do all smart plugs have energy monitoring?
No. Many budget smart plugs only offer on and off control with scheduling. True energy monitoring plugs expose live wattage, daily kWh totals, and historical charts inside their app. Every plug in this roundup, including the Kasa KP115, Tapo P115, Govee H5086, and ThirdReality 4-Pack, includes real-time energy monitoring as a core feature.
What smart plug works best with Home Assistant for energy monitoring?
The ThirdReality Zigbee Smart Plug 4-Pack is the best Home Assistant pick in this lineup. Once paired with a Zigbee coordinator like ZHA or zigbee2mqtt, it exposes real-time wattage and total kWh as standard sensors that drop straight into the Home Assistant Energy dashboard. The Aqara Zigbee plug is a strong alternative if you already run an Aqara hub.
Final Verdict: Which Smart Plug Should You Buy?
After 60 days of side-by-side testing, the Kasa KP115 remains our top pick for the best smart plugs for energy monitoring in 2026. It is accurate, reliable, broadly compatible, and backed by the deepest review base in the category. If you want to start with one plug and see what your appliances are really doing, this is the one to buy.
For shoppers on a budget, the Tapo P115 4-Pack delivers the strongest per-unit value and the best energy report visuals in its price tier. Home Assistant users should go straight to the ThirdReality 4-Pack for native Zigbee energy sensors, and Apple Home households should consider the meross Matter plug or the Aqara Zigbee plug.
Whichever smart plug you pick, the real win is what you learn after a few weeks of data. Phantom loads, standby waste, and over-eager appliances are hiding in every home, and a single smart plug with energy monitoring is the cheapest tool we have found for tracking them down. For more on smart home monitoring across your whole house, check out our guide to the 9 Best WiFi Garden Sensors for Plant Monitoring and our roundup of the 10 Best Geiger Counters for Radiation Monitoring.
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