Solis inverters – Efficient energy conversion

Solis inverters provide efficient conversion of solar energy into stable grid power. With conversion efficiencies up to 98% and advanced hybrid technology, these systems are widely used in both residential and commercial PV installations.

Solar installers, energy consultants, and PV professionals rely on Solis S6 hybrid inverters for reliable energy conversion, broad battery compatibility, and intelligent management of energy flows within modern solar energy systems.

Short answer: A Solis inverter converts solar energy into usable power while simultaneously managing battery storage, self-consumption, and grid interaction via advanced algorithms such as Solis AI.

1. Dynamic Energy Tariffs & Solis AI

In combination with Solis AI, an integrated energy management system is created that automatically responds to dynamic electricity prices, consumption profiles, and grid load.

In practice: Solis AI ensures that batteries charge automatically during low energy prices and discharge during high tariffs. The system analyses real-time data and automatically determines the optimal energy flow within the installation.

  • Optimise use of dynamic energy pricing
  • Maximise self-consumption
  • Real-time monitoring via SolisCloud
  • Automatic optimisation based on weather forecasts

Practical example: During low nighttime prices, energy is stored in the battery, while during high daytime prices, stored energy is used or exported back to the grid.

2. Home Battery Compatibility

Important to know: Solis hybrid inverters are compatible with leading battery brands such as Dyness, Pylontech, and BYD. This synergy enables advanced applications such as:

  • Self-consumption optimisation
  • Peak shaving and grid balancing
  • Energy trading with dynamic tariffs
  • Reliable backup power supply during grid outages

🔋 Dyness Storage | 🔋 Pylontech Storage

3. Practical Installation: Phase Allocation & Smart Metering

Key point: In Solis systems, all single-phase devices must be connected to L1, and the smart meter must be wired completely correctly.

The reason for this is that the inverter internally always uses L1 as the reference phase for power regulation, export limiting, and battery control. The smart meter measures all phases (L1, L2, L3), while the inverter actively controls only one phase.

Common Practical Scenarios:

  • Single-phase hybrid on a 3-phase grid: Always connect to L1 → otherwise, incorrect import/export measurement and faulty battery logic occur.
  • 3-phase hybrid + single-phase PV inverter: The single-phase inverter must be on L1 → otherwise, phase imbalance and incorrect compensation arise.
  • Zero-export systems: Wrong phase = wrong regulation → potential simultaneous import and export.
Symptom Cause Solution
Black meter screen Supply voltage (L + N) not connected Connect supply directly to the meter
Inaccurate measurement Wrong neutral reference or CT direction Check N and CT arrow (toward grid)
No communication RS485 A/B swapped or wrong address Verify wiring and address (usually 1)
4 & 5. PV System Architecture & Grid Balancing

The hybrid inverter acts as the central hub between solar panels, battery, and the electricity grid. This system manages:

  • Direct use of solar energy
  • Storage of excess energy
  • Peak shaving (reducing peak grid load)
  • Load shifting (moving consumption to cheaper periods)
  • Backup during power outages and grid stability support
6. How Does a Hybrid Inverter Work? (Step-by-Step)
  1. Solar panels produce direct current (DC).
  2. The inverter converts DC into alternating current (AC) for the loads.
  3. Excess energy not immediately consumed is stored in the battery.
  4. The battery supplies stored energy during high demand (e.g., in the evening).
  5. If the battery is full and there is no consumption, energy is exported to the grid.
7. Single-Phase vs. Three-Phase Inverters

Single-phase inverters: Compact solutions for smaller residential installations.

Three-phase inverters: Powerful systems for larger homes and commercial applications. These distribute power evenly across multiple phases and are suitable for heavier grid connections.

8. Troubleshooting Data Logger & Measuring System

Diagnostics for faults:

  • No data in SolisCloud: Check COM port seating, power (5V), and 2.4GHz WiFi.
  • Incorrect values: Verify phase connection (L1 mandatory), CT direction (arrow to grid), and presence of neutral.
  • Black smart meter screen: Check supply voltage (L + N) and consumer unit fuses.

Frequently Asked Questions (FAQ)

Why must a single-phase Solis inverter be connected to L1?

Solis uses the L1 phase as a reference point for all internal control algorithms. If connected to L2 or L3, the inverter cannot correctly synchronize energy flows with the smart meter, leading to incorrect measurements and unstable performance.

Why are the smart meter measurements incorrect?

This is usually caused by a faulty neutral connection, a missing measurement reference, or an incorrect CT direction (the arrow must point towards the grid connection).