Best Smart Plugs with Energy Monitoring 2026: Top 4 Compared

Why monitor energy consumption appliance by appliance?

You cannot reduce what you do not measure. That is the fundamental principle of any energy-saving strategy. According to the Energy Saving Trust, standby power alone accounts for 5 to 10% of a household's electricity bill, or 50 to 150 GBP per year. And most households have no idea which appliances are the worst offenders.

Smart plugs with energy monitoring solve this problem. For an investment of 12 to 35 GBP per plug, they allow you to:

• Identify energy-hungry appliances: Discover that an old fridge uses 500 kWh/year versus 120 kWh/year for a modern model
• Eliminate standby consumption: Completely cut power to devices when they are not in use
• Automate savings: Schedule switch-off times and create intelligent routines
• Track progress over time: Verify that your energy-saving efforts are paying off

An International Energy Agency (IEA) study shows that simply visualising real-time consumption leads to a 5 to 15% reduction in wasteful usage. Combine that with automations and savings climb to 10-20%.

Comparison table: best smart plugs with energy monitoring 2026

TP-Link Tapo P115 — Best value for money

The Tapo P115 is the benchmark for energy-monitoring smart plugs in 2026. At around 15 GBP, it delivers accurate energy measurement (±1%), historical consumption tracking in the Tapo app, and Matter compatibility for integration into any smart home ecosystem.

Strengths:

• Unbeatable price for accurate energy monitoring
• Intuitive Tapo app with daily, weekly and monthly consumption charts
• Supports 13A / 3,120W (UK version) — compatible with all household appliances
• Matter compatible for Apple HomeKit, Google Home, Alexa and Samsung SmartThings
• Compact design that does not block adjacent sockets
• Built-in scheduling and timer functions

Weaknesses:

• WiFi only (no Thread) — may congest WiFi if you have many plugs
• No native MQTT (but compatible via Home Assistant)

Ideal for: Beginners who want to monitor and reduce consumption affordably. Buy a 4-pack (approximately 50 GBP) to cover your main appliances.

Shelly Plug S — The advanced user's choice

The Shelly Plug S is the favourite of home automation enthusiasts. Its key advantage: total openness with native MQTT support, REST API, and a Home Assistant integration widely regarded as the best available. It can operate entirely locally without cloud, which is a benefit for both privacy and reliability.

Strengths:

• Native MQTT + REST API for advanced home automation integration
• Works 100% locally without mandatory cloud
• Accurate energy measurement (±1%) with detailed history
• Open-source firmware (can be flashed with Tasmota or ESPHome)
• Exceptional Home Assistant integration
• Very compact design

Weaknesses:

• Limited to 12A / 2,500W — unsuitable for very high-power appliances (tumble dryer, electric oven)
• No native Matter support (Gen3 range adds it but costs more)
• App less polished than Tapo

Ideal for: Home Assistant users and home automation enthusiasts wanting total control. The best choice if privacy and local operation are priorities.

Meross MSS310 — The budget alternative

The Meross MSS310 is the cheapest energy-monitoring smart plug in this comparison. At approximately 13 GBP (often on promotion at 10-11 GBP in multipacks), it covers the essentials: real-time consumption measurement, scheduling and Matter compatibility.

Strengths:

• Lowest price in the comparison
• Matter support for universal integration
• 13A / 3,120W (UK) — compatible with power-hungry appliances
• Available in value multipacks

Weaknesses:

• Slightly lower measurement accuracy (±2%)
• Basic Meross app compared to Tapo or Shelly
• No detailed history in the app (current day only)
• Larger size that may block adjacent sockets

Ideal for: Tight budgets wanting to cover many appliances. Buy a 4-pack (approximately 40 GBP) for maximum coverage at minimum cost.

Eve Energy (Matter) — The Apple ecosystem premium

The Eve Energy is the most technologically advanced smart plug in this comparison. It is the only one using the Thread protocol (low-power mesh network) with Matter, giving it superior responsiveness and reliability compared to WiFi plugs. It is also the only one offering native Apple HomeKit compatibility without going through Matter.

Strengths:

• Thread + Matter — next-generation protocols
• Highly accurate energy measurement (±1%) with complete history
• Native Apple HomeKit compatibility (best Apple integration)
• Works locally without cloud
• No hub needed if you have an Apple TV, HomePod or Thread border router
• Understated, compact design

Weaknesses:

• High price (approximately 35 GBP) — double the WiFi alternatives
• Limited to 11A / 2,500W
• Eve app is iOS only (no native Android app, but works via Matter with Google Home or Alexa)
• Requires a Thread border router (Apple TV 4K, HomePod mini, or Nest Hub)

Ideal for: Apple users wanting the best HomeKit integration and future-proof Thread/Matter technology. Higher investment but premium quality.

How to use consumption data to save money

Installing smart plugs is not enough — you need to act on the data they provide. Here is a 4-step methodology:

Step 1: The initial audit (1 week)

Plug your smart plugs into suspect appliances for one week without changing your habits. Record each appliance's consumption. You will likely discover that:

• Your broadband router uses 80-150 kWh/year running constantly (10-20 GBP/year)
• Your games console on standby uses 30-80 kWh/year (4-10 GBP/year)
• Your TV set-top box on standby uses 40-100 kWh/year (5-13 GBP/year)
• Your phone charger left plugged in uses 5-10 kWh/year

Step 2: Identify priorities

Rank your appliances from most to least power-hungry. Focus your efforts on the 3-5 biggest consumers. An old fridge using 500 kWh/year versus 120 kWh/year for a rated model justifies replacement alone (saving 50-60 GBP/year).

Step 3: Automate

Create automations to eliminate wasteful consumption:

• "Goodnight" routine: Cuts TV, console, set-top box and chargers at 11 PM
• "Away" routine: Via geofencing, cuts all non-essential appliances when everyone has left
• Washing machine timer: The plug detects the cycle has finished (consumption drops below 2W) and sends you a notification

Step 4: Track and adjust (monthly)

Review monthly consumption charts in the app. Compare month to month to verify your efforts are paying off. Adjust automations as needed.

Automation examples to save energy

Here are the most cost-effective automations you can create with smart plugs:

• Office power strip cut-off: A smart plug on your desk power strip (monitor, speakers, lamp, chargers) cuts everything at 8 PM and switches on at 8 AM. Saving: 30-50 kWh/year, or 8-15 GBP/year
• TV media centre cut-off: A plug on the TV power strip (television, set-top box, console, soundbar) cuts everything at midnight. Saving: 50-100 kWh/year, or 13-25 GBP/year
• Overconsumption alert: If an appliance's consumption exceeds an abnormal threshold, receive a notification (useful for detecting a fridge or freezer malfunction)
• Dynamic pricing: With a variable-rate electricity tariff (Octopus Agile, Intelligent Octopus), schedule power-hungry appliances during the cheapest hours

Our verdict

Best overall: The TP-Link Tapo P115 offers the best value with accurate measurement, a complete app and Matter compatibility. The ideal choice for 90% of users.

Best for advanced home automation: The Shelly Plug S is unbeatable for Home Assistant users thanks to native MQTT, local operation and total openness.

Best budget: The Meross MSS310 in a 4-pack is the most economical solution for covering many appliances.

Best for Apple ecosystem: The Eve Energy is the premium choice for Apple users with Thread/Matter and native HomeKit.

For a complete overview of all smart home solutions to save energy, see our Smart Home Energy Saving pillar guide 2026.