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Energy Monitors · Head to head

Shelly 3EM-63W Gen3 vs Shelly EM Gen3

Full Smart Energy Monitors comparison in 2026

Updated October 2026
Data from Amazon and official Shelly site.
2026 verdict
Shelly EM Gen3 beats Shelly 3EM-63W Gen3 in 2026, with its clearest edge on price and relay output.
Shelly EM Gen3
Winner
Shelly EM Gen3
$55.99$69.9920% OFFPrime exclusive deal

Last recorded price

Buy on Amazon USA
What pushes it ahead is price and relay output, and its broader overall balance keeps the advantage from looking narrow. Pick Shelly 3EM-63W Gen3 only when metering is the deciding factor for your setup. As a general recommendation, Shelly EM Gen3 comes out on top.
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FeatureShelly 3EM-63W Gen3Shelly EM Gen3Winner
Price$91.99$55.99Shelly EM Gen3
MeteringThree-Phase Support, Solar Net Metering, Power Factor ReadingsSolar Net Metering, Power Factor ReadingsShelly 3EM-63W Gen3
Relay OutputNOYESShelly EM Gen3
Rating4.64.6Tie
Warranty3 years3 yearsTie
Breaker Panel InstallYESYESTie
Smart Meter PortNONOTie
Connectivity2.4 GHz WiFi, Bluetooth2.4 GHz WiFi, BluetoothTie
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

20% OFF
Prime exclusive deal
$91.99
$114.99

Last recorded price

Buy on Amazon USA
  • + Metering: Three-Phase Support, Solar Net Metering, Power Factor Readings
  • - Price: $91.99 vs $55.99
  • - Relay Output: NO vs YES
Winner
Shelly

Shelly EM Gen3

20% OFF
Prime exclusive deal
$55.99
$69.99

Last recorded price

Buy on Amazon USA
  • + Price: $55.99
  • + Relay Output: YES
  • - Metering: Solar Net Metering, Power Factor Readings vs 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.

  • Shelly 3EM-63W Gen3
  • Shelly EM Gen3

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Frequently Asked Questions

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

Shelly EM Gen3 has the stronger overall profile in this comparison, especially for price and relay output.

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

Price is one of the clearest differences: Shelly 3EM-63W Gen3 lists $91.99, while Shelly EM Gen3 lists $55.99.

Which one looks better on price?

Shelly 3EM-63W Gen3 is listed at $91.99, while Shelly EM Gen3 is listed at $55.99. Shelly EM Gen3 (better spec).

Who should buy Shelly 3EM-63W Gen3?

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

Who should buy Shelly EM Gen3?

Choose Shelly EM Gen3 if your priority is price and relay output 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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