With electricity prices still unpredictable and more homeowners looking for energy independence, solar battery storage has quickly become one of the most important upgrades for a home solar system.
One of the newest and most advanced systems entering the UK market is the Sigenergy SigenStor – an innovative modular energy storage system that combines solar, battery storage, EV charging and smart energy management in one unit.
SolarTherm UK will soon be supplying and installing Sigenergy SigenStor systems across Essex and the South East, giving homeowners access to one of the most flexible solar battery systems currently available.
In this guide, we explain how the Sigenergy SigenStor works, its key features and why it is becoming one of the most talked about battery systems in the solar industry.
What is the Sigenergy SigenStor?
The Sigenergy SigenStor is an all in one home energy system, designed to store solar power, manage electricity usage and provide backup power during outages. Unlike traditional solar battery setups that require separate components, the SigenStor integrates several key technologies into single modular system. These include:
- Hybrid solar inverter
- Battery storage
- Battery management system
- Energy management software
- Optional EV DC charger
This 5-in-1 design allows homeowners to generate, store and manage their energy from one platform, simplifying installation and improving efficiency.
Modular Battery Capacity (6 kWh – 54 kWh)
One of the standout features of the SigenStor system is its modular battery design. Each system can be built using stackable battery modules, allowing homeowners to start with a smaller system and expand if energy usage increases. Up to six modules can be installed in one stack, providing a maximum capacity of around 54 kWh.
This flexibility makes the system suitable for a multitude of properties – standard homes, large properties, EV owners and small commercial buildings. If your energy use increases in the future – for example after installing a heat pump or purchasing an EV – additional battery modules can simple be added.
Hybrid Inverter Options up to 12kW
At the core of the SigenStor system is the Sigenergy Energy Controller, which functions as a hybrid inverter. Sizes range from 3kW to 12kW. Larger inverter support multiple MPPT inputs, allowing solar panels to be installed across different roof orientation without reducing performance. This flexibility is particularly useful for homes with east/west split layouts, partial shading and large solar arrays.
Built-in EV DC Charging
One feature that truly separates the SigenStor from many other battery systems is the integrated EV DC charger. Most home EV chargers operate using AC power and are limited to around 7kW charging speeds. The SigenStor’s DC charger can provide up to 25kW charging, allowing much faster charging when combined with solar and battery power.
Key benefits include:
- Faster EV charging
- Direct solar to car charging
- Reduced grid electricity usage
- Potential future vehicle to home functionality
For homeowners planning to switch to electric vehicles, this makes the system highly future proof.
Smart Energy Management and Tariff Optimisation
The SigenStor system is controlled through the mySigen mobile app, which provides detailed monitoring of your home energy system. The app allows homeowner to track solar generation, battery charging and discharge and household energy consumption. The app also monitors imports and exports and EV charging status.
It enable automated charging strategies based on electricity tariffs, allowing the system to charge batteries during cheap tariff windows and discharge when prices rise. This can significantly improve the return on investment from your solar system.
Backup Power During Grid Outages
Another major benefit of the Sigenergy system is backup power capability. If the grid fails, the system can automatically disconnect and continue powering your home using solar panels and battery storage. This allows essential appliances such as refrigerators, lighting, internet routers and home offices can continue running even during power cuts.
Safe Lithium Iron Phosphate (LFP) Battery Technology
The SigenStor uses lithium iron phosphate (LFP) battery chemistry, which is widely considered one of the safest and longest lasting battery technologies available. Compared with older lithium batteries, LFP technology offers higher thermal stability, reduced fire risk, longer cycle life and improved environmental sustainability.
Typical SigenStor batteries are rated for around 6,000 cycles or more, with a 10 year warranty guaranteeing around 70% remaining capacity.
Indoor or Outdoor Installation
The system is designed for flexible installation and is rated IP66, meaning it can be safely installed indoors or outdoors. This makes it suitable for homes where indoor space may be limited, such as garages, utility rooms, external walls and outbuildings.
Is the Sigenergy SigenStor Worth It?
The SigenStor is one of the most advanced home energy systems currently available. It is particularly well suited for homeowners who want:
- A large solar battery system
- EV charging integration
- Backup power protection
- Future expansion options
Its modular design and integrated technology, make many installers consider it a strong alternative to systems such as the Tesla Powerwall.
Sigenergy SigenStor Installation in Essex and the South East
SolarTherm UK will soon be installing Sigenergy SigenStor battery systems for homeowners across Essex and the South East. Our experienced engineers can design a system tailored to your home’s energy usage, helping you:
- Reduce electricity bills
- Increase energy independence
- Store more of your solar power
- Prepare for electric vehicles
If you’re considering solar battery storage or upgrading your existing solar system, the SigenStor could be one of the most flexible solutions available.
Get a Quote for a Sigenergy SigenStor System
If you’re interested in installing a Sigenergy battery system with your solar panels, our team can help. SolarTherm UK specialises in solar PV installation, solar battery storage solutions, EV charging integration and smart energy systems.
Contact SolarTherm UK today for a free, no obligation quote and design, tailored to your property, usage and future energy needs. No hard sell, just honest, expert advice – and the time you need to make an informed decision.
Your home. Your energy. Your future.
