ZERO Feed-in Technology
Learn how to fully utilize solar energy and avoid energy waste
What is ZERO Feed-in?
In the European market, the price paid by utility companies for exported electricity is usually very low, while the price for purchased electricity is relatively high.
The core idea of Zero feed-in is to ensure that solar power is consumed locally as much as possible, instead of being fed back to the grid. This not only maximizes electricity bill savings but also helps avoid restrictions imposed by utility companies or regulations.
How to configure devices to achieve Zero feed-in?
Users can set up automations via the Refoss app or Home Assistant:
Use the power generation data monitored by EM06P as the trigger condition.
When the trigger condition is met, execute the corresponding action, such as turning on a smart plug.
This way, appliances connected to the plug (e.g., ovens, washing machines, EV chargers, or storage systems) will automatically run and consume solar power first, preventing excess electricity from being exported back to the grid.
Which Refoss devices support Zero feed-in?
To achieve Zero feed-in, both a trigger and an action device are required:
Trigger
EM06P can serve as the trigger, supported in both the Refoss app and Home Assistant.
Action
- With the Refoss app: other Refoss smart plugs can serve as action devices.
- With Home Assistant: any smart plug supported by Home Assistant can serve as an action device.
EM06 vs EM06P Comparison
Understand the differences between the two products and choose the most suitable energy monitor for your needs
EM06P in HA Interface
The EM06P's channel merge function allows users to combine data from multiple monitoring channels into a single virtual channel, displaying and managing it uniformly in Home Assistant.
Zero Feed-in Scenarios
Advantages of EM06P
- 6-channel monitoring at a more affordable price
- Separate display of consumption and feed-in — perfect for solar
- Rich insights: daily, weekly, and monthly statistics
Advantages of EM06P
- Flexible channel grouping, synced to Home Assistant
- Up to 5 years of free cloud storage
- Time-of-Use tariff supported in the Refoss App
- External high-gain antenna for stronger Wi-Fi connection
Frequently Asked Questions
Answers to your questions about Refoss products
What Makes Refoss EM06P Unique?
1.Six-Circuit Monitoring
Supports monitoring 6 single-phase circuits or 2 sets of three-phase circuits.
Doubles the monitoring capacity compared to common 3-circuit devices on the market.
2.Separate Measurement of Import & Export Energy
Clearly distinguishes between consumption and feed-in, making it ideal for solar PV scenarios.
3.Cloud-Independent Operation
Stores data locally with minute-level granularity, even when offline.
Compatible with Home Assistant for local automation without cloud dependency.
4.Comprehensive Statistics & Data Export
Provides daily, monthly, and yearly statistics.
Supports data export for advanced analysis.
5.Zero Feed-in Support
Achieves zero feed-in with automation via the Refoss app or Home Assistant.
Maximizes solar self-consumption and minimizes financial loss from feeding back to the grid.
6.High Cost-Performance Ratio
Matches or even exceeds competitors in functionality, but at a more competitive price.
How can I integrate the EM06P with Home Assistant?
Please refer to the official documentation: https://github.com/Refoss/refoss_rpc
How can the EM06P be used via the Local Web interface?
Web UI
1. Connect to the Wi-Fi Refoss_xx_xxxxxxxx (device hotspot). If it doesn't appear, long-press the button for 10s to reset.
2. Open your browser and go to 10.10.10.1.
3. Set your home Wi-Fi under Settings > Network Settings > Wi-Fi. Once connected, note the new local IP address.
4. Use this IP to access the web interface or integrate with Home Assistant or other platforms.
Refoss EM06P im Test
