Battery Storage
Solar Storage and Commercial Storage for PV Professionals in B2B Wholesale
Battery storage systems are the key lever for maximizing self-consumption in photovoltaic systems and sustainably increasing project profitability.
Whether for private homes or complex industrial applications such as peak shaving: As a dedicated B2B wholesaler, Epax Solar offers installers and specialist companies a broad portfolio of high-performance storage systems. We rely on established brand manufacturers to guarantee maximum reliability and installation-friendly systems for your daily business.
Manufacturers in Our Portfolio
We currently offer solar battery storage systems from the following manufacturers:
Scalable Storage Solutions for Residential and C&I
Storage capacity requirements are continuously increasing. Our portfolio covers all relevant applications, ensuring you always have the right system size for every customer profile:
- Home Storage (Residential): Compact and modular battery systems for private use (typically 5–30 kWh). Thanks to the stacking principle, these systems can be flexibly expanded to meet current and future demand.
- Commercial Storage (Commercial & Industrial): Large-scale storage systems from 30 kWh up to the megawatt range for commercial, agricultural, and industrial use. Ideal for peak shaving, reducing energy costs, and integrating charging infrastructure for e-mobility.
- All-in-One Storage Systems: Compact solutions combining hybrid inverters and battery modules in one unit, reducing installation effort and saving valuable on-site time.
Technological Standards: Cell Chemistry and System Design
Modern solar storage systems rely on advanced technologies to ensure safe, durable, and efficient operation – all available in different configurations at Epax Solar:
- Lithium Iron Phosphate (LiFePO4 / LFP): The industry standard for modern battery systems, offering high thermal stability, intrinsic safety, and excellent cycle life – ideal for long-term PV projects.
- High Voltage (HV) vs. Low Voltage (LV): High-voltage systems reduce conversion losses and work optimally with hybrid inverters, while low-voltage systems are often used for retrofit or off-grid applications.
- AC- and DC-Coupled Systems: DC-coupled systems offer maximum efficiency in new installations, while AC-coupled battery inverters are ideal for retrofitting existing PV systems.
Backup Power, Black Start and Intelligent Energy Management
Grid reliability is becoming increasingly important. Many storage systems support backup or emergency power supply – often via optional transfer switches such as backup boxes.
Black-start capable systems can even restart the entire installation using PV modules after a complete grid failure. Integrated energy management systems (EMS) also enable the intelligent integration of dynamic electricity tariffs and sector coupling.
Efficient Procurement with Epax Solar
As a B2B wholesaler, we understand the challenges of everyday installation work. That’s why we're focusing on what matters most: efficient logistics, reliable availability, and competitive pricing.
Order your solar storage systems, battery modules, and matching accessories directly online in the Epax Solar webshop or contact your personal advisor from our sales team to secure the components you need for timely project execution.