11.3 kWp Self-Consumption Solar Kit – Tri 9.9 kW – 5.12 kWh Battery

Transform the way you use energy with our innovative solar kit!

Designed using the latest technological advances, it combines state-of-the-art solar panels, a smart inverter and a high-performance storage system for optimum efficiency.

All our kits are customisable. In the options, you can select a different model or adjust the quantities to tailor the kit to your specific needs. The mounting system is not included, but can be selected from the available options. Furthermore, you can view the details of your chosen products directly below the price.

Important notice for our customers in Belgium:An environmental levy of €119.50 excl. VAT will be applied to the purchase of each Sofar Solar BTS 5K lithium battery. Further information at the bottom of the page.

Key benefits

• Complete installation of 25 solar panels, each with a capacity of 450 Wp, enabling significant energy production. 
• 9.9 kVA three-phase hybrid inverter (Sofar Solar ESI 9.9K-T1) with 3 MPPT trackers, capable of managing generation, storage and grid or backup power supply. 
• Modular lithium storage (2 “BTS 5K” modules, each with a capacity of 5.12 kWh): allows the energy produced to be stored for use at night or during power cuts. 
• Feed-in capability: this kit specifies ‘feed-in’, meaning that surplus generation can be fed back into the grid subject to conditions. 
• Increased energy self-sufficiency: reduced electricity bills + the ability to make optimal use of solar generation. 
• High-quality components and scalability: high-performance panels (N-Type TOPCon cells) + modular battery. 
• Suitable for residential needs or small commercial/three-phase applications: high power output allows for covering relatively high loads.

Solar panels

Selected from the latest technologies, this panel offers unrivalled efficiency.

See the product sheet in our panels section to find out more.

And don’t forget, we offer you the flexibility to choose the panel model that suits your preferences.

We invite you to use our solar production simulator to determine exactly what your solar output will be.

Sofar Solar ESI-9.9K-T1 three-phase hybrid inverter – 9.9 kW for photovoltaic systems with battery

Boost your solar installation with the Sofar Solar ESI-9.9K-T1 three-phase hybrid inverter – 9.9 kVA, designed for advanced self-consumption with storage. This high-efficiency model (up to 98.2%) manages photovoltaic generation, charges high-voltage batteries and supplies power to your domestic or commercial grid, whilst ensuring a backup power supply in the event of a power cut.

Thanks to its 3 MPPT trackers, it optimises generation even across multiple roof orientations. Its fanless passive cooling ensures quiet and durable operation, ideal for residential and commercial installations.

Compatible with a wide range of lithium batteries, it offers a scalable solution to maximise your solar self-consumption and reduce your electricity bill.

Key features

• Power: 9.9 kVA three-phase
• 3 MPPT channels for optimal efficiency
• Emergency/back-up function
• Compatible with high-voltage batteries
• Scalable, quiet and high-performance installation

SOFAR Solar BTS-5K high-voltage lithium battery – 5.12 kWh for solar installations with three-phase inverters

Optimise your photovoltaic system with the SOFAR Solar BTS-5K high-voltage battery (5.12 kWh): a modular plug-and-play solution designed for residential and commercial installations. Thanks to its LiFePO₄ (lithium iron phosphate) technology, it offers an initial capacity of 5.12 kWh, high efficiency and excellent durability. 

Compatible with the three-phase hybrid inverters in the SOFAR range (notably HYD and ME), this battery operates at a nominal voltage of 400 VDC (range 350–435 V) and can be scaled up to ~20 kWh by connecting multiple modules. 

Key features:

• Capacity: 5.12 kWh (per module) 
• Nominal voltage: 400 V DC, range 350–435 V 
• Efficiency and reliability: lithium iron phosphate technology, active cell balancing, modular design 
• Easy installation: pre-wired cables, plug-and-play design, IP65 protection rating (suitable for indoor/outdoor installation) 
• Expandable: up to 4 modules in series for ~20 kWh of storage. 

Why choose it?

This battery is ideal for households or small businesses wishing to increase self-consumption, add storage capacity after initial installation, or benefit from a backup power supply. Its modular format allows you to start with 5.12 kWh and then add more as needed.

Uses / requirements this kit is suited to

• A detached house or a building connected to a three-phase supply, with significant electrical equipment: heating, air conditioning, heat pump, workshop, garage, etc.
• A household with high daily consumption or consumption peaks, wishing to reduce dependence on the grid and optimise self-consumption.
• A situation where orientation and sunlight exposure are reasonable (well-oriented roof, little shade): this kit performs best in good sunlight conditions.
• A user wishing not only to generate but also to store some of their energy for use in the evening or on days when generation is lower.
• A desire to enhance property value, switch to cleaner energy, and in some cases sell surplus energy back to the grid (thanks to the ‘feed-in’ function).
• A project where there are plans to potentially increase or expand the installation at a later date (thanks to the modularity of the battery and panels).
• A building used partly for domestic purposes but with a ‘semi-commercial’ aspect or with higher energy demands than standard domestic use.

Specific Information for Belgian Customers – Bebat Tax

As part of our commitment to regulatory compliance and environmental responsibility in Belgium, we would like to inform our customers that the purchase of a Sofar Solar BTS 5K battery is subject to a mandatory environmental levy.

An amount of €119.50 excluding VAT must be added for each battery purchased, as a direct contribution to Bebat, the organisation responsible for the management of batteries and accumulators in Belgium. This measure is in accordance with current Belgian environmental legislation.

Important: When purchasing a lithium battery, please add the corresponding product "Sofar Solar BTS 5K Bebat Environmental Levy" according to the number of batteries you are ordering. Otherwise, we will recalculate and invoice the amount after the purchase.

Here is the reference list and rates for the corresponding fee!

This tax applies only to Belgian customers.

More information here!