Energy Monitors · Head to head

Refoss EM16P vs Shelly Pro 3EM 3CT63

Full Smart Energy Monitors comparison in 2026

Updated September 2026
Data from Amazon and official Refoss and Shelly sites.
2026 verdict
In 2026, the recommendation leans toward Shelly Pro 3EM 3CT63 over Refoss EM16P, driven by price, rating, and warranty.
Shelly Pro 3EM 3CT63
Winner
Shelly Pro 3EM 3CT63
$150.99
Buy on Amazon USACheck price
It wins the broader comparison through price, rating, and warranty, while connectivity and integrations help confirm the result. Refoss EM16P is still relevant if you care most about metering, but Shelly Pro 3EM 3CT63 is the stronger recommendation overall. For the average buyer, Shelly Pro 3EM 3CT63 is the safer choice.
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FeatureRefoss EM16PShelly Pro 3EM 3CT63Winner
Price$169.99$150.99Shelly Pro 3EM 3CT63
Rating4.24.4Shelly Pro 3EM 3CT63
Warranty2 years5 yearsShelly Pro 3EM 3CT63
MeteringSplit-Phase Support, Three-Phase Support, Solar Net Metering, Power Factor ReadingsThree-Phase Support, Solar Net Metering, Power Factor ReadingsRefoss EM16P
Connectivity2.4 GHz WiFi, Bluetooth2.4 GHz WiFi, Ethernet, Bluetooth, OtherShelly Pro 3EM 3CT63
IntegrationsHome AssistantGoogle Home, Alexa, Samsung SmartThings, Home AssistantShelly Pro 3EM 3CT63
Data & MonitoringEnergy Cost Tracking, Data Export, Usage AlertsEnergy Cost Tracking, Time-of-Use Rates, Data Export, Usage AlertsShelly Pro 3EM 3CT63
Breaker Panel InstallYESYESTie
Smart Meter PortNONOTie
Local ControlLocal API, MQTT, Local Web InterfaceLocal API, MQTT, Local Web InterfaceTie
Relay OutputNONOTie
Load ManagementYESYESTie
Winner
Shelly

Shelly Pro 3EM 3CT63

$150.99
Buy on Amazon USACheck price
  • + Price: $150.99
  • + Rating: 4.4
  • + Warranty: 5 years
  • - Metering: Three-Phase Support, Solar Net Metering, Power Factor Readings vs Split-Phase Support, Three-Phase Support, Solar Net Metering, Power Factor Readings

Frequently Asked Questions

Which is better overall: Refoss EM16P or Shelly Pro 3EM 3CT63?

Shelly Pro 3EM 3CT63 has the stronger overall profile in this comparison, especially for price, rating, and warranty.

What is the biggest difference between Refoss EM16P and Shelly Pro 3EM 3CT63?

Price is one of the clearest differences: Refoss EM16P lists $169.99, while Shelly Pro 3EM 3CT63 lists $150.99.

Which one looks better on price?

Refoss EM16P is listed at $169.99, while Shelly Pro 3EM 3CT63 is listed at $150.99. Shelly Pro 3EM 3CT63 (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 Pro 3EM 3CT63?

Choose Shelly Pro 3EM 3CT63 if your priority is price and rating and that matters more than metering.

Full comparison table

Compare all 23 Energy Monitors side by side

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  • 23 Energy Monitors
  • 46 specs compared
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