Kasa Smart Plug with Energy Monitoring (KP115) vs Amazon Smart Plug (Matter)
We compare the Kasa Smart Plug with Energy Monitoring (KP115) and Amazon Smart Plug (Matter) head-to-head on performance, features, value, and more. Here's which one wins.
Kasa Smart Plug with Energy Monitoring (KP115)
Scored 9.3/10 in our testing
Kasa Smart Plug with Energy Monitoring (KP115)
Best smart plug for tracking electricity usage and identifying power-hungry devices
Amazon Smart Plug (Matter)
Best smart plug for Amazon Alexa and Echo smart home ecosystems
Score Breakdown
| Kasa Smart Plug with Energy Monitoring (KP115) | Category | Amazon Smart Plug (Matter) |
|---|---|---|
| 9/10 ✓ | Performance | 8.8/10 |
| 9.5/10 ✓ | Features | 8.8/10 |
| 9.2/10 | Ease of Use | ✓ 9.5/10 |
| 9.5/10 ✓ | Value | 9.3/10 |
| 9.3/10 ✓ | Overall | 9.1/10 |
Specs Comparison
| Kasa Smart Plug with Energy Monitoring (KP115) | Spec | Amazon Smart Plug (Matter) |
|---|---|---|
| Real-time watts, kWh, cost tracking | Energy Monitoring | Matter |
| Alexa, Google Home, SmartThings | Compatibility | Alexa, Google Home, Apple Home, SmartThings |
| 15A | Rating | Amazon Alexa deep integration |
| Kasa app with energy history | App | 15A |
| Daily, weekly, monthly usage reports | Reports | Compact design |
Kasa Smart Plug with Energy Monitoring (KP115)
Pros
- + Real-time energy monitoring with cost estimates
- + Daily/weekly/monthly usage reports
- + Kasa's reliable and mature app
- + 15A for high-draw appliances
Cons
- − No Matter or Apple HomeKit support
- − No Thread — Wi-Fi only
- − Larger footprint than some compact alternatives
Amazon Smart Plug (Matter)
Pros
- + Deepest Alexa ecosystem integration
- + Matter compatibility for platform flexibility
- + Amazon reliability and easy app setup
- + Competitive pricing
Cons
- − Amazon's smart home platform can feel locked in
- − No energy monitoring
- − Requires Alexa app for best experience
Our Verdict
Based on our scoring, the Kasa Smart Plug with Energy Monitoring (KP115) comes out on top with an overall score of 9.3/10. Energy monitoring transforms a smart plug from a convenience device to a money-saving tool. The KP115 shows real-time wattage and historical kWh data — plug in your refrigerator, space heater, or PC gaming setup and see exactly what they cost to run. Kasa's app generates cost estimates based on your electricity rate. Discovering a forgotten heater costing $50/month is the kind of insight that pays for 10 smart plugs.
Buy the Kasa Smart Plug with Energy Monitoring (KP115) on AmazonRead the full Best Smart Plugs 2026 guide for complete reviews of all 10 products.
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