Rethinking Profitability

THE SUN-MASTER KNOWLEDGE BLOG

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THE SUN-MASTER ENERGY SYSTEM.

 

Permanently Reduce Energy Costs

By combining a photovoltaic system, SUN-MASTER solar carports, and energy storage modules, you can reduce your electricity costs by up to 80%. Instead of paying €0.39/kWh, you will only pay up to €0.08/kWh in the future – a saving that pays off year after year.

More than independence – real profitability

Our systems not only stand for the good feeling of independence, but above all for clear economic advantages. Intelligent additional functions increase the efficiency of your energy supply and secure your investment in the long term.

Applications that further Reduce Costs

3-phase backup power instead of classic emergency power

While simple emergency power solutions only work to a limited extent, the SUN-MASTER storage system reliably continues to supply your entire house or company.

Peak Shaving for Lower Connection Costs

The storage system covers short-term consumption peaks. This means that your grid connection does not have to be designed for maximum peak load – this saves considerable connection costs and also relieves the strain on the power grid.

Island mode for complete freedom

Whether in business, in agriculture or in remote locations: The SUN-MASTER energy storage system makes you independent of the power grid and ensures supply even where no grid is available.

Grid Relief in Times of High Demand

Camping sites, ports or charging infrastructure for electric cars benefit from storage buffering. Instead of expanding grids at great expense, the SUN-MASTER energy storage system ensures stability and security of supply.

Cleverly use dynamic electricity tariffs

Charge the storage when electricity is cheap and use it when prices rise. This turns your energy system into an active source of return and further increases profitability.

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Conclusion: An investment that pays off economically.

The SUN-MASTER energy system combines maximum cost reduction with high flexibility, security and sustainability. Whether private, commercial or municipal – with SUN-MASTER you secure economic independence and long-term returns.

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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.
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