Company cases about Integrated Solar and Energy Storage Solution for Reliable Power Supply in Germany

Integrated Solar and Energy Storage Solution for Reliable Power Supply in Germany

2025-12-04

Project Details

PV capacity: 20 kWp
Energy storage: 258 kWh Star Series Energy Storage Cabinet

Project Overview

This project in Germany features a hybrid energy system that seamlessly integrates solar photovoltaic generation, battery energy storage, and grid connectivity to deliver stable, efficient, and economically optimized power supply.

The system is designed to intelligently manage energy flows throughout the day. During periods of strong solar generation, PV power is prioritized to supply on-site loads while any surplus electricity is stored in the battery system. As solar output decreases in the evening or under low-irradiance conditions, the system automatically transitions to a combined supply from PV and stored energy, ensuring continuity of power.

When the battery state of charge (SOC) reaches defined thresholds, grid power is introduced strategically to maintain system reliability and extend battery life.

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Smart Energy Management Strategy

Daytime solar generation directly supports loads, with excess energy stored in the battery.
During low solar availability, PV and ESS jointly supply on-site demand.
Grid power is used at night or when battery SOC drops below optimized levels to recharge storage and secure continuous operation.

Project Value

By combining on-site renewables with intelligent energy storage control, the project achieves greater energy self-sufficiency, improved grid resilience, and reduced dependence on grid electricity—demonstrating a flexible and scalable model for commercial PV + storage applications in Europe.

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