Winner
Updated September 2026
Data from Amazon and official Shelly and Sonoff sites.
2026 verdict
Shelly EM Gen3 edges out SONOFF POWCT in 2026, led by rating, warranty, and metering.
What pushes it ahead is rating, warranty, and metering, and connectivity and data & monitoring keep the advantage from looking narrow. Pick SONOFF POWCT only when price and integrations are the deciding factor for your setup. For most setups, Shelly EM Gen3 is the smarter buy.
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| Feature | Shelly EM Gen3 | SONOFF POWCT | Winner |
|---|---|---|---|
| Price | $69.99 | $38.19 | SONOFF POWCT |
| Rating | 4.6 | 4.5 | Shelly EM Gen3 |
| Warranty | 3 years | 1 year | Shelly EM Gen3 |
| Metering | Solar Net Metering, Power Factor Readings | Solar Net Metering | Shelly EM Gen3 |
| Connectivity | 2.4 GHz WiFi, Bluetooth | 2.4 GHz WiFi | Shelly EM Gen3 |
| Integrations | Google Home, Alexa, Samsung SmartThings, Home Assistant | Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter | SONOFF POWCT |
| Data & Monitoring | Energy Cost Tracking, Time-of-Use Rates, Data Export, Usage Alerts | Data Export, Usage Alerts | Shelly EM Gen3 |
| Local Control | Local API, MQTT, Local Web Interface | None | Shelly EM Gen3 |
| Breaker Panel Install | YES | YES | Tie |
| Smart Meter Port | NO | NO | Tie |
| Relay Output | YES | YES | Tie |
| Load Management | YES | YES | Tie |
Winner
- + Rating: 4.6
- + Warranty: 3 years
- + Metering: Solar Net Metering, Power Factor Readings
- - Price: $69.99 vs $38.19
- - Integrations: Google Home, Alexa, Samsung SmartThings, Home Assistant vs Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- + Price: $38.19
- + Integrations: Google Home, Alexa, Apple HomeKit, Samsung SmartThings, Home Assistant, Matter
- - Rating: 4.5 vs 4.6
- - Warranty: 1 year vs 3 years
Frequently Asked Questions
Which is better overall: Shelly EM Gen3 or SONOFF POWCT?
Shelly EM Gen3 has the stronger overall profile in this comparison, especially for rating, warranty, and metering.
What is the biggest difference between Shelly EM Gen3 and SONOFF POWCT?
Price is one of the clearest differences: Shelly EM Gen3 lists $69.99, while SONOFF POWCT lists $38.19.
Which one looks better on price?
Shelly EM Gen3 is listed at $69.99, while SONOFF POWCT is listed at $38.19. SONOFF POWCT (better spec).
Who should buy Shelly EM Gen3?
Choose Shelly EM Gen3 if your priority is rating and warranty and that matters more than price.
Who should buy SONOFF POWCT?
Choose SONOFF POWCT if your priority is price and integrations and that matters more than rating.
Full comparison table
Compare all 23 Energy Monitors side by side
You are looking at two of them. The full table lines up all Energy Monitors in the catalog with the same specs, so you can filter by what you need and sort by price or rating.
- 23 Energy Monitors
- 46 specs compared
- 43 filters
SonoffMINI PM Matter Over WiFi Power Meter (Non-Switch)
$15.90
ShellyPro EM-50
$119.99
EmporiaVue 3
$199.99- Shelly
EM Gen3
$69.99 
Shelly3EM-63W Gen3
EmporiaVue 3 3-Phase
$209.99
RefossEM01P
16% OFF$82.99$69.99
ShellyEM Gen4
SonoffPOWCT
$38.19
ShellyEM Mini Gen4
$24.99
RefossEM06P
ShellyPro 3EM v2
$154.99
ShellyPro 3EM 3CT63
$150.99
MerossEM16P
20% OFF$199.99$159.98
ShellyPro 3EM-400
$329.99
RefossEM16P
15% OFF$199.99$169.99
MerossEM06P
AeotecHome Energy Meter 8
$95.99
SonoffMINI PM Zigbee Power Meter (Non-Switch)
$15.90
EmporiaVue Utility Connect
$39.99
CamerasShellyCamera
DisplaysShellyWall Display X1i
DisplaysShellyWall Display XL
4.2(62)$349.99
DisplaysShellyWall Display
4.4(434)18% OFF€147.56€121.33
Door & Window SensorsShellyBLU Door/Window ZB
4.6(23)$22.99- Energy MonitorsShelly
3EM-63W Gen3
4.6(137) - Energy MonitorsShelly
EM Gen3
4.6(262)$69.99 - Energy MonitorsShelly
EM Gen4
- Energy MonitorsShelly
EM Mini Gen4
4.5(120)$24.99 - Energy MonitorsShelly
Pro 3EM 3CT63
4.4(330)$150.99 - Energy MonitorsShelly
Pro 3EM-400
4.3(21)$329.99 - Energy MonitorsShelly
Pro 3EM v2
4.5(69)$154.99 - Energy MonitorsShelly
Pro EM-50
4.6(957)$119.99 
Gas DetectorsShellyGAS (CNG)
4.2(45)
Gas DetectorsShellyGAS (LPG)
LED BulbsShellyMulticolor Bulb E27 Gen3
4.3(28)
Motion SensorsShellyBLU Motion ZB
4.4(21)$26.99
Motion SensorsShellyBlu Motion
4.0(1,017)$25.99
PlugsShellyPlug M Gen3
4.5(757)$14.99
PlugsShellyPlug PM Gen3
Air Quality MonitorsSonoffSAWF-07P Air Quality Monitor
3.7(188)$39.90
Air Quality MonitorsSonoffSAWF-08P Air Quality Monitor
4.3(169)$49.90
CamerasSonoffCAM GlassView
5.0(1)$34.90
CamerasSonoffCam Outdoor DUO
$79.90
CamerasSonoffCam Slim Gen2
4.4(170)$19.90
CamerasSonoffGK-200MP2-B
4.0(149)30% OFF$9.99$6.99
DisplaysSonoffNSPanel Pro Gen2
3.3(10)€149.90
DisplaysSonoffNSPanel Pro
4.1(72)$129.90
DonglesSonoffDongle Lite MG21
4.5(432)$24.90
DonglesSonoffDongle Max
4.3(590)
DonglesSonoffDongle Plus MG24
4.7(664)$35.90
DonglesSonoffDongle Plus PP10
4.6(78)$35.90
DonglesSonoffDongle-PZG23
4.6(171)10% OFF$39.90$35.91
DonglesSonoffZBDongle-E
4.6(3,722)$24.90
DonglesSonoffZBDongle-P
4.5(5,667)15% OFF$39.99$33.96
Door & Window SensorsSonoffDW2-WIFI
3.8(1,062)$12.23
Door & Window SensorsSonoffSNZB-04 ZigBee Wireless Door/Window Sensor
3.8(102)$17.99
Door & Window SensorsSonoffSNZB-04P ZigBee Door/Window Sensor
4.0(13)$18.99
Door & Window SensorsSonoffSenseGuard DW Gen2
4.4(182)- Energy MonitorsSonoff
MINI PM Matter Over WiFi Power Meter (Non-Switch)
5.0(1)$15.90