BYD BatteryBox recognised for efficiency in energy storage system evaluation

In collaboration with inverter partners like Fronius, Kostal, and Goodwe, the BatteryBox system secured two of the top five spots in the 5kW system test scenarios and three in the 10kW system test scenarios, making it the most featured system in the leadership list. The HTW's testing across various application scenarios highlights the BatteryBox's adaptability when used alongside leading inverter technologies.

For seven consecutive years, HTW's "Stromspeicher-Inspektion" (energy storage inspection) has assessed the efficiency of energy storage systems in tandem with inverter solutions, using the System Performance Index (SPI). Developed at HTW Berlin, the SPI considers various factors, including energy conversion pathways, dynamic control losses, and settling times. The 2024 evaluation tested 20 energy storage systems.

2024's Most Efficient Systems In the SPI 5kW test scenario, the BYD BatteryBox HVS 7.7, combined with a Fronius Primo GEN24 6.0 plus inverter, achieved the highest efficiency at 92.6%. When paired with a KOSTAL PLENTICORE plus G2 5.5, it also secured second place with 92.3%.

In the SPI 10kW test scenario, BYD BatteryBox HVS systems claimed three of the top five positions. With a Fronius Primo GEN24 10.0 Plus, the system attained 95.4% efficiency; with a KOSTAL PLENTICORE plus G2 10, it reached 94.9%; and with a KOSTAL PLENTICORE BI G2 10/26, it achieved 94.3%.

Feng Jiang, Head of Residential, Storage System at BYD, expressed delight at these results: "We are very pleased to see that the BYD BatteryBox could secure so many spots within the different test scenarios and with various system combinations. This reaffirms the versatility of the BatteryBox system, suitable for a broad range of application scenarios. The system's modularity and flexibility, coupled with the option to select the most appropriate high-quality inverter from our trusted partners for each case, contribute to its overall versatility. We value the SPI tests by HTW as they offer independent third-party guidance for system selection. We have been part of the SPI testing since its inception, sharing HTW’s objective of providing market transparency and test-based information."

Enhancing Home Self-Sufficiency through Efficient Energy Storage The HTW study also explored how battery storage impacts the self-sufficiency of homes with PV systems. Findings suggest that battery storage significantly boosts the self-sufficiency of highly energy-efficient households.