Best Smart Plugs With Energy Tracking (2026)
Best Smart Plugs With Energy Tracking (2026)
Smart plugs that monitor energy usage are one of the most underrated tools in a smart home. For as little as $13, you can find out exactly how much electricity each appliance draws, identify vampire loads that waste money 24/7, and automate devices based on real consumption data. In 2026, energy-tracking smart plugs have gotten more accurate, gained Matter support, and offer better integration with home energy dashboards.
We’ve tested over 20 smart plugs with energy monitoring capabilities to find the five best options across different budgets, protocols, and ecosystems. Whether you’re a HomeKit loyalist, a Home Assistant power user, or just want something cheap that works with Alexa, there’s an ideal pick here.
Why Energy Tracking Matters
Before we get to the picks, let’s talk about why you should care about energy monitoring at the plug level.
Identify Vampire Loads
Many devices draw power even when “off.” Your TV, game console, computer monitor, and cable box might collectively waste $100–200 per year in standby power. An energy-tracking smart plug reveals these hidden costs instantly, and then lets you cut power automatically when devices aren’t in use.
Find High-Draw Appliances
That old mini-fridge in the garage? It might be costing you $25/month. Space heaters, dehumidifiers, and aging appliances often draw far more power than you’d expect. Energy-tracking plugs give you real data to make informed decisions about replacements.
Automate Based on Usage
Advanced smart plugs can trigger automations when power draw changes. For example: turn off a smart plug when a washing machine’s power draw drops below 5W (indicating the cycle is done), and send a notification. Or automatically cut power to a charger once a device reaches full charge.
Track Costs Over Time
Most energy-tracking plugs calculate your costs based on your electricity rate. Over weeks and months, you build a clear picture of where your money goes—and where you can save.
Our Top Picks
1. TP-Link Kasa KP125M — Best Overall Value
The Kasa KP125M is the smart plug to beat in 2026. At just $15, it offers Matter support over WiFi, accurate energy monitoring (±1% in our testing), and excellent app quality. The Kasa app shows real-time wattage, daily/weekly/monthly energy consumption, and estimated costs.
Matter compatibility means it works natively with Apple Home, Google Home, Amazon Alexa, and Samsung SmartThings without cloud dependencies for basic control. Energy data is still routed through the Kasa app for detailed history, but on/off control works locally through any Matter controller.
The compact design doesn’t block adjacent outlets, and it handles up to 15A (1,800W). Setup takes under 2 minutes via the Kasa app with Matter QR code pairing. For most people, this is the only smart plug you need to consider.
Price: $15 | Protocol: WiFi + Matter | Max Load: 15A / 1,800W
2. Eve Energy — Best for Privacy and HomeKit
Eve has always prioritized privacy, and the Eve Energy continues that tradition. It processes all energy data locally—nothing goes to a cloud server unless you explicitly enable it. The plug communicates via Thread (with Matter support), providing a fast, reliable, low-power mesh network connection.
Energy tracking in the Eve app is exceptionally detailed, showing real-time consumption, projected monthly costs, and historical data going back years. The app also estimates your carbon footprint based on your energy source mix.
At $40, it’s significantly more expensive than the Kasa, but you’re paying for Thread protocol (more reliable than WiFi for smart home devices), complete privacy, and the best energy visualization of any smart plug app. It also works seamlessly within a broader Matter-compatible device setup.
Price: $40 | Protocol: Thread + Matter | Max Load: 15A / 1,800W
3. Aqara Smart Plug — Best for Zigbee Ecosystems
If you’re running a Zigbee-based smart home with an Aqara hub or a Zigbee coordinator like the SONOFF ZBDongle, the Aqara Smart Plug is an excellent energy-monitoring option at $20. It uses Zigbee 3.0, which means local communication, low latency, and no reliance on WiFi bandwidth.
Energy monitoring reports wattage, voltage, current, and cumulative energy consumption. Data updates every 10 seconds in the Aqara app, and every measurement is accessible via the Zigbee protocol for use in Home Assistant or other platforms.
The plug also acts as a Zigbee router, extending your mesh network’s range—useful in large homes. The 2,500W (10A at 250V) maximum load makes it suitable for most household appliances in regions with 220-240V mains.
Price: $20 | Protocol: Zigbee 3.0 | Max Load: 10A / 2,500W (at 250V)
4. Shelly Plug S — Best for Home Assistant and Local Control
The Shelly Plug S is the darling of the Home Assistant community, and for good reason. At $20, it offers WiFi connectivity with a fully local API—no cloud account required, ever. It exposes MQTT, REST API, and CoAP endpoints for direct local integration with any home automation platform.
Energy monitoring is accurate to within ±1% and reports real-time power, voltage, current, power factor, and total energy consumed. All of this data is available locally without any cloud dependency, making it the most privacy-respecting WiFi plug available.
The Shelly app is functional but basic compared to Kasa or Eve. Where the Shelly Plug S shines is in its open architecture—flash custom firmware (like Tasmota or ESPHome), set up automations locally, or integrate directly with Home Assistant’s energy dashboard for whole-home tracking.
Price: $20 | Protocol: WiFi (local API, MQTT) | Max Load: 12A / 2,500W
5. Tapo P110 — Best Budget Option
TP-Link’s Tapo P110 delivers energy monitoring at the lowest price point we’d recommend: $13. At this price, you get real-time wattage monitoring, daily/monthly consumption history, and cost estimates in the Tapo app. It’s WiFi-based and works with Alexa and Google Home.
Energy accuracy is within ±3% in our testing—less precise than the Kasa KP125M or Shelly, but perfectly adequate for identifying high-draw devices and vampire loads. The Tapo app has improved significantly in 2026, offering a clean energy dashboard with exportable data.
The main limitations are no Matter support and no local API. All data routes through TP-Link’s cloud, and advanced energy automations are limited to what the Tapo app offers. But at $13, it’s hard to argue with the value for basic energy tracking needs. If you’re starting a smart home from scratch, these are great affordable entry points.
Price: $13 | Protocol: WiFi | Max Load: 15A / 1,800W
Comparison Table
| Plug | Price | Protocol | Energy Accuracy | Matter Support | Max Load | App Quality |
|---|---|---|---|---|---|---|
| TP-Link Kasa KP125M | $15 | WiFi + Matter | ±1% | ✅ Yes | 15A / 1,800W | Excellent |
| Eve Energy | $40 | Thread + Matter | ±1% | ✅ Yes | 15A / 1,800W | Excellent |
| Aqara Smart Plug | $20 | Zigbee 3.0 | ±2% | ❌ No (via hub) | 10A / 2,500W | Good |
| Shelly Plug S | $20 | WiFi (local API) | ±1% | ❌ No | 12A / 2,500W | Basic |
| Tapo P110 | $13 | WiFi | ±3% | ❌ No | 15A / 1,800W | Good |
How to Use Energy-Tracking Plugs Effectively
Monitor First, Automate Later
Start by plugging in your energy monitor and just observing for a week. You’ll quickly identify which appliances use the most power and which have significant standby draw. Then create automations to address the biggest offenders.
Track Seasonal Changes
Energy usage varies dramatically by season. Your space heater, dehumidifier, or window AC unit might cost $50+/month during their active season. Track these over time to understand your true annual energy costs per device.
Create an Energy Budget
Once you know what each device costs, set monthly energy budgets. Many apps allow alerts when a plug exceeds a set kWh threshold, helping you stay aware of creeping usage.
Combine with Whole-Home Monitoring
Smart plugs give you device-level detail, but pair them with a whole-home energy monitor to see the complete picture. The combination lets you identify both individual device costs and your home’s base load.
Group by Room or Category
If you have multiple energy-tracking plugs, group them by room (home office, entertainment center, kitchen) or category (always-on devices, seasonal devices) to understand consumption patterns at a higher level.
Best Practices for Smart Plug Placement
Not every outlet needs an energy-tracking plug. Focus on:
- Entertainment centers — TVs, soundbars, gaming consoles, and streaming devices often have high standby draw
- Home office — Monitors, computers, printers, and chargers add up quickly
- Kitchen appliances — Coffee makers, instant pots, and countertop appliances
- Seasonal devices — Space heaters, fans, dehumidifiers, and window AC units
- Suspect appliances — Old fridges, chest freezers, or any device you think might be drawing excessive power
Most of these plugs fall under $50, making them accessible additions to any smart home budget.
Ecosystem Integration
All of these plugs work within broader smart home ecosystems. Here’s how they fit:
- Apple Home — Eve Energy (native Thread) and Kasa KP125M (via Matter)
- Google Home — Kasa KP125M (Matter or native), Tapo P110 (native)
- Amazon Alexa — All five plugs work with Alexa
- Home Assistant — Shelly Plug S (best, local), Aqara (via Zigbee), all others via integrations
- Samsung SmartThings — Kasa KP125M (Matter), Aqara (via hub)
FAQ
Do all smart plugs track energy usage?
No, most basic smart plugs only offer on/off control and scheduling. Energy monitoring is a premium feature found in specific models. Always verify that “energy monitoring” or “power metering” is listed in the product specifications before purchasing.
How accurate are smart plug energy readings?
The best plugs (Kasa KP125M, Eve Energy, Shelly Plug S) are accurate to within ±1% of actual consumption, which matches dedicated power meters. Budget options like the Tapo P110 are within ±3%, which is still useful for identifying high-draw devices and trends.
Can smart plugs handle high-wattage appliances?
Most smart plugs support 1,800W (15A at 120V) or 2,500W (at 220-240V). This covers nearly all household appliances except electric heaters above 1,500W, dryers, and ovens. Never exceed the rated maximum—check the plug’s specifications against your appliance’s power draw.
Do energy-tracking smart plugs work without internet?
It depends on the model. The Shelly Plug S and Aqara Smart Plug work completely locally without internet. The Eve Energy works locally via Thread/HomeKit. The Kasa and Tapo plugs require internet for initial setup and cloud features, but basic Matter control works locally after setup.
Can I export energy data from smart plugs?
The Shelly Plug S offers the most flexible data export via its local API and MQTT. Home Assistant can log data from any of these plugs into its long-term statistics database. The Eve app exports CSV data. Kasa and Tapo offer in-app viewing but limited export options.
Final Verdict
The TP-Link Kasa KP125M is our top recommendation for most users. At $15 with Matter support and ±1% accuracy, it offers unbeatable value. Privacy-conscious Apple users should choose the Eve Energy, while Home Assistant enthusiasts will love the Shelly Plug S for its open, local-first approach.
Start with 3–5 plugs on your highest-suspect devices, monitor for a month, and you’ll likely find $10–30/month in energy savings. These plugs pay for themselves within weeks.