The Growatt TPM (Three-Phase Meter), especially the TPM-E and TPM-CT-E models, is the most important power-sensing hub for commercial and large-scale residential solar systems in 2026. The TPM is designed to give you full visibility across all three power lines. It also lets you set smart export limits and track self-consumption, making sure that your high-capacity installation stays compliant with the grid and runs very efficiently.
Industrial-Grade Monitoring: Total Phase Transparency
Balancing loads is very important for the health of a system in a 3-phase environment. The Growatt TPM gives you real-time, Class 1 accuracy (±1%) for voltage, current, and power in all phases. This information goes straight into the Growatt ShinePhone or ShineServer dashboard, which lets you see which phase is carrying the most load and change the way electricity is distributed in your building.
-
Dynamic Export Control: The TPM acts as the “traffic controller” for your solar production. It communicates via RS485 with your MOD, MID, or commercial hybrid inverter to ensure that no surplus power is leaked back into the grid beyond your local utility’s allowance.
-
Unified Smart Home Integration: Beyond simple monitoring, the TPM-E V2 integrates with Growatt’s APX and ARK battery systems and EV chargers. This creates a “Smart Energy Manager” that prioritizes storing solar in batteries or charging your vehicle before drawing from the grid.
Precision Setup: Direct Connection vs. CT Versions
The 2026 Growatt TPM line offers two distinct installation paths to suit different switchboard architectures:
-
Direct Connection (TPM-E): Supports up to 100A through the meter itself, making it a compact and reliable choice for most residential and light commercial 3-phase systems.
-
CT Connection (TPM-CT-E): For larger commercial sites, the CT version utilizes split-core Current Transformers (supporting 100A, 250A, or higher). This allows for a non-invasive installation on heavy gauge tails (up to 16 mm or 24 mm) without having to disconnect the main service lines.
Technical Specifications (TPM-E / TPM-CT-E)
| Feature | Specification Details |
| Model Number | TPM-E (Direct) / TPM-CT-E (CT Version) |
| Grid Type | 3P4W (Three Phase, Four Wire) |
| Nominal Voltage | 230 Vac (L-N) / 400 Vac (L-L) |
| Max. Current | 100 A (Direct) / Up to 600 A+ (with CTs) |
| Measurement Accuracy | Class 1.0 (Active Power) |
| Communication Interface | RS485 (Modbus RTU) |
| Dimensions (WxHxD) | 72 x 94.5 x 65 mm (4 DIN Modules) |
| Self-Consumption | < 2 W |
| Protection Rating | IP51 (Indoor/Switchboard mount) |
| Operating Temp | -25°C to +55°C |
| Included Accessories | 15m RS485 Cable (3x CT Clamps for CT-E model) |
Reviews
There are no reviews yet.