Energy Monitors · Head to head

Refoss EM01P vs Shelly EM Gen3

Full Smart Energy Monitors comparison in 2026

Data from Amazon and official Refoss and Shelly sites.
2026 verdict
For most buyers in 2026, Shelly EM Gen3 is the safer pick over Refoss EM01P because of metering, breaker panel install, and connectivity. It separates itself most clearly on metering, breaker panel install, and connectivity, while still looking better on integrations and data & monitoring. You should still consider Refoss EM01P if smart meter port matters more than raw overall balance. Overall, Shelly EM Gen3 makes more sense for most people.
vs
FeatureRefoss EM01PShelly EM Gen3Winner
MeteringSolar Net MeteringSolar Net Metering, Power Factor ReadingsShelly EM Gen3
Breaker Panel InstallNOYESShelly EM Gen3
Smart Meter PortYESNORefoss EM01P
Connectivity2.4 GHz WiFi2.4 GHz WiFi, BluetoothShelly EM Gen3
IntegrationsHome AssistantGoogle Home, Alexa, Samsung SmartThings, Home AssistantShelly EM Gen3
Data & MonitoringEnergy Cost Tracking, Data ExportEnergy Cost Tracking, Time-of-Use Rates, Data Export, Usage AlertsShelly EM Gen3
Relay OutputNOYESShelly EM Gen3
Load ManagementNOYESShelly EM Gen3
Price$69.99$69.99Tie
Local ControlLocal API, MQTT, Local Web InterfaceLocal API, MQTT, Local Web InterfaceTie

Frequently Asked Questions

Which is better overall: Refoss EM01P or Shelly EM Gen3?

Shelly EM Gen3 has the stronger overall profile in this comparison, especially for metering, breaker panel install, and connectivity.

What is the biggest difference between Refoss EM01P and Shelly EM Gen3?

Metering is one of the clearest differences: Refoss EM01P lists Solar Net Metering, while Shelly EM Gen3 lists Solar Net Metering, Power Factor Readings.

Which one looks better on price?

Refoss EM01P is listed at $69.99, while Shelly EM Gen3 is listed at $69.99. Tie.

Who should buy Refoss EM01P?

Choose Refoss EM01P if your priority is smart meter port and that matters more than metering.

Who should buy Shelly EM Gen3?

Choose Shelly EM Gen3 if your priority is metering and breaker panel install and that matters more than smart meter port.

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