Buying Guide
Best Energy Monitors for UK Homes 2026
Updated June 2026
Most UK households have no idea which appliances are costing them the most. Your smart meter shows total usage but not where the money goes. An energy monitor plugs into individual appliances and tells you exactly how much each one costs to run — per hour, per day, per year. Once you know, you can make changes that save real money. Here are the 5 best options on Amazon UK.
Quick answer
Our top pick: TP-Link Tapo P110 Smart Plug (2-Pack)
£16–£22 on Amazon on Amazon
The UK's #1 rated smart plug 2026 — real-time energy monitoring, scheduling, Alexa + Google, no hub needed
Check Price on Amazon →The 5 best energy monitors we recommend
Plug-In Electricity Usage Monitor with Backlit Display
The simplest way to find out what any appliance costs to run. Plug it into the wall, plug your appliance into it, and instantly see real-time watts, kWh, voltage, amps and cost. Large backlit LCD display is easy to read. No app, no WiFi, no setup — just plug and read. Perfect for checking your tumble dryer, dehumidifier, fridge, electric heater or any appliance you suspect is costing too much.
Pros
- Instant readings with zero setup
- Large backlit display
- Shows watts/kWh/cost/voltage/amps
- Overload protection
- Works with any UK plug appliance
Cons
- Only monitors one appliance at a time
- No app or data logging
- No smart features
- Basic plastic build
Who it's for: Checking individual appliances like tumble dryers, dehumidifiers, heaters and fridges
Check Price on Amazon UK →TP-Link Tapo P110 Smart Plug with Energy Monitoring (2-Pack)
Officially the UK's best smart plug according to SmartHomeUK and UK Home Energy (2026). Energy monitoring plus smart control in one compact device. The Tapo app shows real-time power draw, daily/weekly/monthly kWh usage, and estimated costs. Schedule appliances to turn off at night and eliminate standby waste automatically. 3,000+ reviews at 4.6 stars. Compact design doesn't block the adjacent socket.
Pros
- UK's #1 rated smart plug 2026
- Real-time energy monitoring via app
- Alexa + Google compatible
- Scheduling eliminates standby waste
- Compact design
- No hub required
- 2-pack value
Cons
- Needs 2.4GHz WiFi
- App required for monitoring
- No Apple HomeKit support on base model
Who it's for: People who want energy monitoring and smart home control in one device
Check Price on Amazon UK →Efergy Elite Classic 4.0 Wireless Home Energy Monitor
The original whole-home energy monitor. A CT clamp clips onto your electricity meter cable — no rewiring, no electrician needed — and wirelessly sends real-time data to a portable display you can place anywhere in your home. Turn on the kettle and watch it spike to 3kW. Shows real-time consumption in watts, kWh, cost and CO2 emissions. Set a maximum consumption alarm so it beeps when you're using too much.
Pros
- Monitors entire home electricity in real-time
- Wireless portable display
- No rewiring needed
- Shows cost and CO2
- Consumption alarm
- Up to 70m wireless range
- Wall mountable
Cons
- More expensive
- Requires setup at your electricity meter
- Doesn't break down by individual appliance
- History only goes back 8 days
Who it's for: Seeing total home electricity usage in real-time at a glance
Check Price on Amazon UK →ANTELA Smart Plug with Energy Monitoring (4-Pack)
Monitor four appliances simultaneously from one app dashboard. Each plug shows real-time current consumption (mA), power (W), voltage (V) and total kWh usage. Historical data stored by month and by day so you can track changes over time. Schedule on/off times to eliminate standby waste across multiple devices. One reviewer says: 'I have now got eight of these — finding these was a revelation.' Works with Smart Life app, Alexa and Google Home.
Pros
- Best per-unit value (4 plugs)
- Detailed energy data per device
- Monthly/daily history
- Solid build quality
- Alexa + Google
- Smart Life app
- Schedule and automate
- 13A rated
Cons
- Requires 2.4GHz WiFi
- Smart Life app required
- Bulkier than single plugs
Who it's for: Monitoring multiple appliances and automating standby savings across the home
Check Price on Amazon UK →KETOTEK Plug-In Electricity Meter
The cheapest way to measure what an appliance costs to run. Basic plug-and-read design with backlit LCD showing watts, kWh, amps, voltage, and cost. No frills, no app, no setup. Plug it in, set your electricity tariff rate, and see exactly what your appliance costs per hour. Overload protection built in. At under £12, it pays for itself the first time it reveals an energy-hungry appliance.
Pros
- Cheapest energy monitor available
- Backlit display
- Shows cost per hour
- Overload protection
- No setup needed
- Battery backup retains data when unplugged
Cons
- Basic plastic build
- Small display
- No app or data logging
- No smart features
Who it's for: One-off checks to find which appliances cost the most before investing in smart plugs
Check Price on Amazon UK →