WEM3050T - one of the Best Choice for Home Energy Management | 3-Phase Wi-Fi Energy Meter
WEM3050T: The Ideal Choice for Home Energy Management
WEM3050T is a Wi-Fi three-phase energy meter designed by IAMMETER to meet the energy management needs of residential users.
This meter supports bidirectional measurement, allowing it to monitor both electricity consumption from the grid and electricity fed back to the grid. Featuring a built-in Wi-Fi interface, it comes with free IAMMETER-Cloud Basic service, and can be easily integrated with third-party open-source platforms such as Home Assistant and NodeRed, or with your own custom systems.
With just one meter, you can monitor almost all types of home PV systems except for setups where both the grid and inverter are three-phase (monitoring both three-phase grid and three-phase inverter simultaneously would require two meters).
1. Compatibility
As a three-phase meter, WEM3050T is highly compatible. It supports single-phase, three-phase (WYE), and split phase (single phase three-wire systems).
1.1 Three-phase Grid
Monitoring a three-phase grid or three-phase loads is the most basic application of the WEM3050T.
Note: The three-phase system must use a WYE connection and require a neutral line. WEM3050T cannot be used for Delta connection systems. For Delta connection monitoring, please choose the WEM3080TD.
1.2 Single-phase Grid
WEM3050T can also be used as three single-phase meters. For example, phase A can monitor total household consumption, while phases B and C can monitor the air conditioner and water heater respectively.
1.3 Single-phase Grid + Single-phase PV System
This is a classic use case of WEM3050T in single-phase PV systems: one phase measures the grid, one phase measures the inverter output, and the third phase can monitor a specific load (optional).
1.4 Split Phase Grid + Split Phase PV
The split phase (single phase three-wire) system is very common in North America. One WEM3050T can monitor both the split phase grid and the split phase inverter at the same time.
Principle: Phases A and B are used to monitor the split phase grid, while phase C monitors one output of the split phase inverter. By setting the CTCratio parameter of the meter to 2, the power, current, and energy measured on phase C will be doubled. Since the split phase inverter output is balanced, doubling the C-phase reading gives the actual inverter output, enabling a single WEM3050T to monitor both the grid and inverter simultaneously.
1.5 Three-phase Grid + Three-phase PV System
If you need to monitor both a three-phase grid and a three-phase inverter simultaneously, you will need two WEM3050T meters.
2. Excellent Cost Performance
One WEM3050T costs only 109 USD.
This price includes the three-phase WEM3050T energy meter plus IAMMETER-Cloud Basic version free service.
3. Powerful Features
WEM3050T supports comprehensive metering features. In addition to three-phase energy measurement, it also supports Net Metering (NEM) and reactive power measurement (KVAR, KVARH).
It provides various data interfaces, including modbus/tcp, mqtt, tls, http/https, and tcp.
4. Multi-Platform Support
4.1 IAMMETER-Cloud Basic
IAMMETER-Cloud Basic is a streamlined cloud service designed for individual users. Simply purchase the WEM3050T for 109 USD to enjoy the Basic version for free.
The Basic version retains the Energy Usage and Billing, Billing & Income reports, and Dashboard UI, which are more than enough for residential users.
Users can also upgrade to IAMMETER-Cloud Pro by paying a one-time subscription fee (about 60 USD).
4.2 Home Assistant, NodeRed, and More
WEM3050T is compatible with nearly all mainstream open-source systems, such as Home Assistant, NodeRed, OpenHAB, ioBroker, Zabbix, Thingsboard.
It also supports pushing JSON data directly to customer systems via HTTP, TCP, TLS, or MQTT.
Example: JSON Data from IAMMETER Energy Meter
5. Unique Feature for Residential PV Users
If you are a residential PV user, WEM3050T can be linked with the WPC3700 to form a PV heater control system. This system allows you to use excess PV power to heat your water heater, maximizing self-consumption and reducing grid feed-in.
Video: WPC3700 works together with WEM3050T
6. Conclusion
If you are a residential user considering energy monitoring or management, WEM3050T is an excellent choice. Purchase Links:
About IAMMETER
IAMMETER is a company focused on energy management products and services, offering smart energy meters, management apps, and cloud platforms.
Our goal is to help customers manage, utilize, and save energy effectively, reducing electricity bills through smart monitoring and analysis.
Solutions
Products
- IAMMETER Energy Meters Overview
- WEM3080T – Three-Phase/Split-Phase Wi-Fi Energy Meter
- WEM3080 – Single-Phase Wi-Fi Energy Meter
- WEM3050T – Three-Phase Energy Meter
- WEM3046T – Three-Phase Wi-Fi Energy Meter with 5A Standard CT Input
