Energy Monitors · Head to head

Shelly 3EM-63W Gen3 vs Shelly Pro EM-50

Full Smart Energy Monitors comparison in 2026

Updated September 2026
Data from Amazon and official Shelly site.
2026 verdict
In this 2026 Shelly Pro EM-50 vs Shelly 3EM-63W Gen3 comparison, Shelly Pro EM-50 comes out ahead thanks to connectivity and relay output.
Shelly Pro EM-50
Winner
Shelly Pro EM-50
$119.99
Buy on Amazon USACheck price
Its biggest wins come from connectivity and relay output, and its broader overall balance adds more confidence to the verdict. Choose Shelly 3EM-63W Gen3 only if metering matters more to you than the broader advantage from Shelly Pro EM-50. That is enough to make Shelly Pro EM-50 the better pick for most buyers.
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FeatureShelly 3EM-63W Gen3Shelly Pro EM-50Winner
MeteringThree-Phase Support, Solar Net Metering, Power Factor ReadingsSolar Net Metering, Power Factor ReadingsShelly 3EM-63W Gen3
Connectivity2.4 GHz WiFi, Bluetooth2.4 GHz WiFi, Ethernet, Bluetooth, OtherShelly Pro EM-50
Relay OutputNOYESShelly Pro EM-50
Rating4.64.6Tie
Warranty3 years3 yearsTie
Breaker Panel InstallYESYESTie
Smart Meter PortNONOTie
IntegrationsGoogle Home, Alexa, Samsung SmartThings, Home AssistantGoogle Home, Alexa, Samsung SmartThings, Home AssistantTie
Data & MonitoringEnergy Cost Tracking, Time-of-Use Rates, Data Export, Usage AlertsEnergy Cost Tracking, Time-of-Use Rates, Data Export, Usage AlertsTie
Local ControlLocal API, MQTT, Local Web InterfaceLocal API, MQTT, Local Web InterfaceTie
Load ManagementYESYESTie
Shelly

Shelly 3EM-63W Gen3

Price unavailable right now
Buy on Amazon UKCheck price
  • + Metering: Three-Phase Support, Solar Net Metering, Power Factor Readings
  • - Connectivity: 2.4 GHz WiFi, Bluetooth vs 2.4 GHz WiFi, Ethernet, Bluetooth, Other
  • - Relay Output: NO vs YES
Winner
Shelly

Shelly Pro EM-50

$119.99
Buy on Amazon USACheck price
  • + Connectivity: 2.4 GHz WiFi, Ethernet, Bluetooth, Other
  • + Relay Output: YES
  • - Metering: Solar Net Metering, Power Factor Readings vs Three-Phase Support, Solar Net Metering, Power Factor Readings

Frequently Asked Questions

Which is better overall: Shelly 3EM-63W Gen3 or Shelly Pro EM-50?

Shelly Pro EM-50 has the stronger overall profile in this comparison, especially for connectivity and relay output.

What is the biggest difference between Shelly 3EM-63W Gen3 and Shelly Pro EM-50?

Metering is one of the clearest differences: Shelly 3EM-63W Gen3 lists Three-Phase Support, Solar Net Metering, Power Factor Readings, while Shelly Pro EM-50 lists Solar Net Metering, Power Factor Readings.

Who should buy Shelly 3EM-63W Gen3?

Choose Shelly 3EM-63W Gen3 if your priority is metering and that matters more than connectivity.

Who should buy Shelly Pro EM-50?

Choose Shelly Pro EM-50 if your priority is connectivity and relay output and that matters more than metering.

Full comparison table

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  • 46 specs compared
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