Energy Monitors · Head to head

Refoss EM16P vs Shelly EM Gen4

Full Smart Energy Monitors comparison in 2026

Updated October 2026
Data from Amazon and official Refoss and Shelly sites.
2026 verdict
For most buyers in 2026, Shelly EM Gen4 is the safer pick over Refoss EM16P because of price, rating, and warranty.
Shelly EM Gen4
Winner
Shelly EM Gen4
€65.12€67.003% OFF

Last recorded price

Buy on Amazon Belgium
It separates itself most clearly on price, rating, and warranty, while still looking better on connectivity and integrations. The only strong reason to choose Refoss EM16P is if metering is more important to you than the overall verdict. That keeps the verdict firmly in favor of Shelly EM Gen4.
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FeatureRefoss EM16PShelly EM Gen4Winner
Price$169.99€65.12Shelly EM Gen4
Rating4.14.6Shelly EM Gen4
Warranty2 years3 yearsShelly EM Gen4
MeteringSplit-Phase Support, Three-Phase Support, Solar Net Metering, Power Factor ReadingsSolar Net Metering, Power Factor ReadingsRefoss EM16P
Connectivity2.4 GHz WiFi, Bluetooth2.4 GHz WiFi, Bluetooth, ZigbeeShelly EM Gen4
IntegrationsHome AssistantGoogle Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, MatterShelly EM Gen4
Data & MonitoringEnergy Cost Tracking, Data Export, Usage AlertsEnergy Cost Tracking, Time-of-Use Rates, Data Export, Usage AlertsShelly EM Gen4
Relay OutputNOYESShelly EM Gen4
Breaker Panel InstallYESYESTie
Smart Meter PortNONOTie
Local ControlLocal API, MQTT, Local Web InterfaceLocal API, MQTT, Local Web InterfaceTie
Load ManagementYESYESTie
Refoss

Refoss EM16P

15% OFF
Prime exclusive deal
$169.99
$199.99

Last recorded price

Buy on Amazon USA
  • + Metering: Split-Phase Support, Three-Phase Support, Solar Net Metering, Power Factor Readings
  • - Price: $169.99 vs €65.12
  • - Rating: 4.1 vs 4.6
Winner
Shelly

Shelly EM Gen4

3% OFF
Prime exclusive deal
€65.12
€67.00

Last recorded price

Buy on Amazon Belgium
  • + Price: €65.12
  • + Rating: 4.6
  • + Warranty: 3 years
  • - Metering: Solar Net Metering, Power Factor Readings vs Split-Phase Support, Three-Phase Support, Solar Net Metering, Power Factor Readings

Price history compared

Every price change of both, in the same store, so the gap between the two lines is what one costs more than the other.

  • Refoss EM16P
  • Shelly EM Gen4

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Frequently Asked Questions

Which is better overall: Refoss EM16P or Shelly EM Gen4?

Shelly EM Gen4 has the stronger overall profile in this comparison, especially for price, rating, and warranty.

What is the biggest difference between Refoss EM16P and Shelly EM Gen4?

Price is one of the clearest differences: Refoss EM16P lists $169.99, while Shelly EM Gen4 lists €65.12.

Which one looks better on price?

Refoss EM16P is listed at $169.99, while Shelly EM Gen4 is listed at €65.12. Shelly EM Gen4 (better spec).

Who should buy Refoss EM16P?

Choose Refoss EM16P if your priority is metering and that matters more than price.

Who should buy Shelly EM Gen4?

Choose Shelly EM Gen4 if your priority is price and rating and that matters more than metering.

Full comparison table

Compare all 25 Energy Monitors side by side

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  • 25 Energy Monitors
  • 46 specs compared
  • 43 filters
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