The Sungrow S100 Single-phase Energy Meter is a precise sensor that acts as the “eyes” of your solar system. The S100 will be required for Zero-Export compliance and to get the most out of the iSolarCloud monitoring platform in 2026, when grid rules get stricter.
Real-Time Visibility: From Production to Consumption
Your solar app only shows what you make if you have a smart meter. The S100 fills that gap by keeping track of how much power your home is sending or receiving. You can see your “vampire loads” with this 24/7 data stream and change how you use your appliances to match when the sun is at its highest, which will greatly shorten your ROI.
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Dynamic Export Control: In areas where the grid operator limits how much solar you can send back to the street, the S100 communicates instantly with your Sungrow inverter to throttle production to match your home’s exact needs.
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Battery Intelligence: For hybrid systems (like the SH5.0RS), the S100 is the trigger for battery activity. It tells the battery exactly when the house has “spare” solar to store and exactly when to discharge to prevent buying expensive grid power.
Non-Invasive Installation: The 100A CT Advantage
The Sungrow S100 Single-phase Energy Meter stands out in 2026 for its “electrician-friendly” design. The S100 employs a split-core Current Transformer (CT) clamp, unlike traditional meters that necessitate cutting and diverting the main power lines.
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Plug-and-Play Setup: The included 100A CT simply snaps around your existing live main cable. This reduces installation time by up to 50% and maintains the integrity of your home’s original wiring.
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Compact DIN-Rail Profile: At just 18 mm wide (the size of a standard single-pole circuit breaker), the S100 fits easily into crowded switchboards where space is at a premium.
Technical Specifications (S100)
| Feature | Specification Details |
| Model Number | S100 |
| Nominal Voltage | 240 Vac |
| Voltage Range | 180 Vac – 286 Vac |
| Max. Operating Current | 100 A (via included CT Clamp) |
| Measurement Accuracy | Class 1 (High Precision) |
| Communication | RS485 (Modbus RTU) |
| Power Consumption | < 2 W (10 VA) |
| Dimensions (WxHxD) | 18 x 117 x 65 mm (1 DIN Module) |
| Mounting | 35 mm DIN rail |
| Operating Temp | -25°C to +75°C |
| Environmental | IP20 (Indoor/Switchboard mount) |
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