Energy independence: Sofar 6kW solar inverter

Discover excellence in solar energy conversion with the Sofar ESI photovoltaic inverter. Designed by Sofar Solar, a leader in the solar industry, this inverter represents the pinnacle of modern solar technology.

• Maximum reliability: The Sofar ESI inverter is synonymous with reliability and durability. Built with high-quality components, it ensures flawless operation in the most demanding conditions.
• Exceptional efficiency: Enjoy optimal conversion of solar energy into electricity thanks to the superior efficiency of the Sofar ESI inverter. Every ray of sunlight is captured and transformed into usable electrical power to meet your energy needs.
• Advanced versatility: The Sofar ESI inverter offers remarkable versatility, adapting to a variety of applications and system configurations. Whether for a residential or commercial installation, it meets your needs with flexibility and efficiency.
• Advanced features: Equipped with advanced features such as dual MPPT inputs, the Sofar ESI inverter maximises the output of your solar system, allowing you to fully harness the potential of your photovoltaic installation.
• Quality guarantee: With Sofar Solar, quality is guaranteed. Enjoy complete peace of mind with an extended warranty on your Sofar ESI inverter, ensuring years of reliable, worry-free performance.

Choose solar excellence with the Sofar ESI photovoltaic inverter and transform your solar energy into a source of clean, renewable electricity for your home or business.

Sofar PowerAll

All-in-one residential energy storage system with integrated hybrid inverter
The SofarSolar high-voltage battery system consists of 1 to 6 BTS 5K battery modules and a single-phase ESI 3...6K-S1 hybrid inverter.
Up to six units can be connected in parallel, allowing for a configuration of up to 36 kW and 180 kWh.

Smart energy management

The battery modules are equipped with an integrated battery management system and a power control unit. The SOFAR PowerALL can intelligently adjust the battery’s output voltage and current based on its state of charge. This increases the available energy capacity.

Modular

The battery capacity can be easily expanded thanks to the system’s modular and stackable design. With plug-and-play cables, installation is both quick and user-friendly.

Safety

The LiFePO4 battery modules are equipped with CATL battery cells. In addition, there are multiple active and passive protection functions, provided by the BMS, the power control unit and the inverter. Fuses are installed on the battery side.

Generate, store and consume your solar energy

The Sofar Solar ESI 6K-S1 hybrid inverter is designed for homes of 120 to 200 m² and high-consumption households wishing to maximise their solar self-consumption. With a rated power of 6 kW, it can simultaneously power a heat pump, a washing machine, a water heater and the lighting in a standard home — whilst intelligently managing your storage battery.

What this inverter actually does

The Sofar ESI 6K-S1 performs three functions continuously:

• It converts the energy from your solar panels (direct current) into electricity that can be used in your home (230 V AC), with a maximum efficiency of 97.7%.
• It stores surplus energy in a Sofar BTS high-voltage battery for use in the evening, at night or during a power cut.
• It automaticallyswitches to the battery in the event of a mains power cut, without any noticeable interruption, with a peak power of up to 9,000 VA for 10 seconds to start up your most power-hungry appliances.

With a typical installation of 6 to 9 solar panels (6 to 9 kWp) and a 10 kWh battery, you can achieve 60 to 80% self-consumption depending on your consumption profile, representing an estimated saving of between €900 and €1,400 per year on your electricity bill.

Use our simulator to get a personalised estimate in 2 minutes.

High-voltage battery: a modern and scalable architecture

The Sofar ESI 6K-S1 operates with the Sofar BTS 5K high-voltage battery system (400 V), a newer and more efficient architecture than traditional low-voltage systems (48 V). Here’s what this means for you in practical terms:

• Better efficiency: high voltage reduces losses during conversion — more usable energy
• Simplified cabling: lower currents allow for thinner cables and a less expensive installation
• Total modularity: start with 1 BTS 5K module (5.12 kWh) and add up to 6 modules over time to reach 30 kWh of storage — without changing the inverter
• CATL LiFePO4 cells: among the safest and most durable battery technologies on the market, with integrated BMS and active and passive protection

Advanced features to optimise your installation

• 5 operating modes: priority self-consumption, off-peak charging, full grid feed-in, battery reserve, standalone off-grid mode
• Parallel function: connect two ESI 6K-S1 units in a master/slave configuration to achieve 12 kW of total power — without adding a complex electrical panel
• AC Coupling: integrate an existing grid-connected inverter into your system to charge the Sofar battery without replacing everything
• OTA updates: remote software updates, without the need for physical intervention on the device

Installation: what you need to know before buying

Installation must be carried out by a qualified electrician. A few important points to check:

Your main circuit breaker must be rated for 6 kW single-phase power (generally 40 A minimum)

In France: single-phase feed-in power may be limited to 6 kVA under certain ENEDIS contracts — this model is at the upper limit for single-phase systems; please check this against your region and contract

Set-up is carried out viathe built-in screen or the SolarMan Smart app (iOS & Android), with an intuitive step-by-step interface

SolarMan Smart

SofarSolar is redefining the future of energy with smart inverters. Equipped with advanced monitoring features, our inverters come with a WiFi Stick as standard, paving the way for seamless connectivity. Choose your path to efficiency with options such as Ethernet, GPRS or LTE dongles. Transform every installation into a digital symphony, where solar power becomes a connected, smart and sustainable experience. SofarSolar, your partner for smarter and brighter energy.

Apple Store - Solarman Smart

Android - Google Play - Solarman Smart

Setup steps:

1. After launching the app, register as a new user or enter your current SOLARMAN login details.
2. Create a new system and enter the system data.
3. Scan the barcode on the logger stick to assign an inverter to the system.
4. Go to the newly created system to configure the logger stick (device/logger).
5. Press the button on the WiFi dongle for 1 second to activate the dongle’s WPS mode so that the smartphone can connect to the WiFi dongle.
6. Now select your local WiFi network for internet access and enter your WiFi password.
7. The WiFi dongle is now configured with the access details.