EFFICIENTLY STORE AND USE SOLAR ENERGY.

THE ENERGY SYSTEM FROM
SUN-MASTER.

SAFELY FEED IN AND USE THE ENERGY.

MORE INDEPENDENCE. LOWER COSTS.

Become independent of rising electricity prices and use your solar power around the clock. With a compact energy storage system, you can sustainably secure your home – for today and future generations. At the same time, you are sending a clear signal for sustainability. Our systems are flexible, economical and reliable – creating the basis for a secure and profitable energy future in your company.

Our energy storage modules are modular, expandable and designed to grow with your company. At the same time, they meet the highest safety and quality standards – developed for permanent use in private households.

WHICH PRIVATE HOUSEHOLDS CAN BENEFIT.

THE ENERGY SYSTEM PAYS OFF.

Whether detached house, semi-detached house or multi-generation house – with the energy systems from SUN-MASTER, all those who want to make optimal use of their own solar power benefit. Our storage solutions make you more independent of electricity prices, secure your energy supply and create sustainability and value stability for your home.
Independence from the electricity market
You use your own solar power around the clock and free yourself from rising energy prices.
More security for your home
Our storage systems reliably secure your energy supply – even in the event of power failures.
High profitability
Thanks to low-maintenance technology and up to 10 years warranty, the investment pays for itself after just a few years.
Sustainable for future generations
Reduce your CO₂ emissions, conserve resources and make an active contribution to climate protection.

OUR COMPLETE SERVICE FOR YOUR ENERGY SUPPLY.

PLANNING YOUR RELIABLE SYSTEM.

SUN-MASTER plans your individual energy supply with you and accompanies you during the conversion to a future-proof system. Our service is precisely tailored to your project: We advise you comprehensively, support you in the planning phase and take over the professional installation.
Consulting
Individual, transparent and tailored to your requirements.
Planning
Detailed calculation and design of your system for maximum economic efficiency.
Implementation
Professional installation with the highest quality standards.

Customer service
Support with the expansion of existing PV systems as well as reliable repair and maintenance.

Frequently Asked Questions.

An overview.

Where Can the Energy Storage System be Placed and how is it Installed?

Our energy storage system is usually installed in a basement, cellar vault, or a
suitable storage room. For maximum safety – especially when multiple
modules are stacked on top of each other – our technicians perform a professional wall mounting.

The modules are delivered by freight forwarder or by our own team. Thanks to integrated rollers, they can be easily moved to the installation site, after which the rollers are removed. Alternatively, the modules can also be safely lifted using the integrated eyelet system. For stacking the energy storage modules, the eyelets can also be removed.

Our energy storage modules utilize particularly safe 48V technology. The installed LiFePO₄ cells are considered extremely reliable and, unlike conventional lithium-ion batteries, cannot self-ignite. This means for you: maximum safety with full performance.

In the front area of the storage system, where the electronics such as the BMS and wiring are located, our engineers have deliberately planned additional space. This ensures good ventilation and protects the components from overheating. At the same time, we remain flexible: In case of future adjustments – for example, due to new legal requirements or new state-of-the-art components – additional components can be easily integrated.

Fundamentally, our energy storage systems are very durable and low-maintenance. However, if a malfunction does occur, the failure is usually attributable to the electronics—specifically the BMS (Battery Management System) or the communication interfaces (RS485 / CAN bus). These components are subjected to greater stress than the actual LiFePO₄ cells, which are extremely robust and long-lasting.
The typical spare part costs per module are approximately:

BMS: €200–250
Communication Board: €250–300
LiFePO₄ Cell Unit: €150–200

Briefly explained:
BMS (Battery Management System): Monitors and protects the cells, ensures uniform charging and discharging.
RS485 / CAN-BUS: Enables communication between the storage system and the inverter and master module.

All components in the energy storage system are securely mounted and thus protected from vibrations. The stable aluminum frame provides additional stability, while the outer casing made of HPL panels offers particularly robust protection.

HPL (High Pressure Laminate) is a high-pressure laminate characterized by its extreme robustness: It is shock- and scratch-resistant, withstands moisture and UV radiation, and is flame-retardant (fire protection class B1). Thus, the internal components are reliably protected against external environmental influences such as heat, moisture, or mechanical stress – and the storage system remains operational long-term.

LiFePO₄ cells are considered particularly safe and are extremely rarely self-igniting. Should a fire nevertheless occur internally, it would not spread outwards: LiFePO₄ cells only ignite at around 200-250 °C, while the robust HPL panels of the outer casing are only flammable from approximately 400-500 °C. This means that even in extreme cases, fire spread is ruled out.
Even after installation, we are reliably there for you. Should components ever fail, you can reach us by phone from Monday to Friday between 8:00 AM and 5:00 PM at +49 39724-268000 or anytime by email at info@sun-master.de. Our nationwide installation service ensures that defective electronic components or individual cells are replaced directly on-site within three working days – quickly, professionally, and reliably.
Our energy storage systems usually consist of several modules. If a single module fails, the overall storage system remains functional – only the performance is reduced.
A storage system with 5 modules, each with 16 kWh capacity and 8 kW power, results in a total of 80 kWh capacity and 40 kW power. If one module fails, 64 kWh capacity and 32 kW power are still available. The storage system therefore continues to operate reliably, albeit with slightly reduced performance.
  • Production Facilities & Machine Halls (24/7 Operation): Even if a module fails, the energy supply remains stable, allowing machines to continue running. Production downtimes are thus reliably avoided.
  • Hospitals & Emergency Power Systems: In safety-critical areas, a continuous supply is crucial. Even if a module fails, the power supply remains guaranteed – an important factor for life support systems and sensitive medical equipment.

Thanks to the modular design, maximum operational reliability is thus ensured.

A possible failure is displayed directly in the SUN-MASTER App. There, you can not only monitor the status of your storage system, but also control yields and consumption, optimize self-consumption, and intelligently manage your energy flows.

Your contact with sun-master

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