Best for: Kasa users and mixed Apple, Alexa and Google homes
Standout: Matter control plus a detailed energy log in the Kasa app
Watch out: energy readings stay in the Kasa app for now
Not for: 5GHz-only networks, or anyone who wants a single plug
The Kasa KP125M is a slim Wi-Fi smart plug that switches a lamp or appliance on a schedule and logs how much power it uses, and it works with Apple Home, Alexa, Google Home and SmartThings through Matter. It’s sold only in packs, at about $30 for two and $50 for four.
What it’s good for
Finding standby power hogs: leave a TV, game console or cable box on it for a week and check the idle watts. A device idling at 10W around the clock uses about 88kWh a year, roughly $15 at 17 cents per kWh (estimate).
Checking an old fridge or freezer: a few days of readings show its real daily kWh, which you can compare with the yellow EnergyGuide label on a new model.
Schedules and timers: lamps, fans, holiday lights and coffee makers. The motor rating is only 1/6 HP, so check a window AC’s nameplate and manual before you put one on a schedule.
What to skip: space heaters and anything else that runs near the 15A limit for hours. Most heater manuals say to plug straight into a wall outlet.
How I researched this: Kasa and TP-Link specs and launch details, reviews by Reviewed and BGR, TP-Link community posts from staff and owners, and retailer listings. Standby costs are estimates. Prices checked September 29, 2026.
Kasa Matter Smart Plug with Energy Monitoring (KP125M)
Kasa KP125M review: a slim Matter Wi-Fi plug with energy tracking in the Kasa app. What it's good for, where the data shows up, price and alternatives.
Product Brand:
Kasa (TP-Link)
Editor's Rating: 4.5
Pros
Matter certified, so one plug works with Apple Home, Alexa, Google Home and SmartThings
Slim 2.6 x 1.5 in body leaves the second outlet free
Real-time and historical energy use in the free Kasa app
Keeps working on your home network if the internet goes down
UL certified, with a 2-year limited warranty
Cons
Energy readings don't pass through Matter yet, so Apple Home, Alexa and Google Home show on/off only (TP-Link community, February 2026)
2.4GHz Wi-Fi only
Sold only in 2-packs and 4-packs, not as a single plug
Costs more per plug than TP-Link's own Tapo P110M (BGR)
Specs
Max load
15A / 1,800W resistive, 1/6 HP motor
Voltage
100–120V, 50/60Hz
Connectivity
2.4GHz Wi-Fi, Bluetooth for setup
Smart home
Matter certified (Apple Home, Alexa, Google Home, SmartThings)
Energy monitoring
Real-time and historical use in the Kasa app
Local control
LAN control when the internet is down
Size
2.6 x 1.5 x 1.6 in
Certification
UL
Pack
2-pack or 4-pack
Warranty
2-year limited
Verdict
A safe, easy pick if you already use Kasa gear or want a proven Matter plug with a solid energy log in its own app. If you want energy data in SmartThings or Home Assistant through Matter, or the lowest price per plug, get the Tapo P110M instead.
