Driven by the increasing adoption of new energy vehicles, Xinya Electronic Co., Ltd. wanted to build a charging parking lot to upgrade its factory supporting facilities and create a smarter EV charging environment for employees.
Heavy Grid Load and High Operating Costs
EV charging peaks often overlap with factory peak electricity demand, increasing grid pressure and causing voltage fluctuations that affect charging reliability. In addition, the high electricity price during grid peak hours is not conducive to providing favorable charging benefits for employees.
Low Clean Energy Utilization and Limited Intelligent Scheduling
Solar power generation is restricted by weather and time, resulting in unstable power supply. The system cannot store excess daytime solar power, leading to serious waste of clean energy.
To address these challenges, the project establishes an intelligent energy management model that enables coordinated operation between power generation, EV charging, energy storage, and energy release. This closed-loop approach improves energy efficiency and optimizes overall power utilization.The specific solutions are as follows:
Project Overview
Spanning over 400 m², the integrated parking facility features PV generation, energy storage, and EV charging systems. Rooftop PV modules convert solar energy into electricity, while lithium batteries store excess energy for use during low solar generation periods or peak electricity pricing hours. EVs can be directly charged with power generated by the photovoltaic system or stored in the energy storage system.
Solar System
Solar modules are laid on the idle roof of the parking lot. The daytime solar power is directly supplied to new energy vehicles on site, realizing local consumption of green power and reducing reliance on municipal electricity. The system adopts 550W LONGi bifacial modules with a total capacity of 29.4kW and one Huawei inverter.
Energy Storage System
The energy storage cabinet is equipped with lithium iron phosphate batteries with a power of 125kW and a capacity of 215kWh. It stores surplus solar power generated in the daytime and releases power for charging at night, on rainy and cloudy days, or during grid peak power consumption periods. It effectively solves the intermittent problem of photovoltaic power supply and realizes peak shaving and valley filling of grid load.
EV Charging System
The carport covers an area of 271m² with 16 parking spaces. It is equipped with two 120kW DC chargers and two 14kW AC chargers independently developed by XYDF, supporting simultaneous charging for 8 EVs.
The “Solar + Storage + EV Charging” Parking Lot generates approximately 60,000 kWh of green power annually, which is prioritized for employee vehicle charging and effectively reduces the factory’s electricity expenditure. By virtue of peak shaving and valley filling via energy storage, it eliminates grid overload and voltage instability during peak power consumption, ensuring stable and safe charging services. The project optimizes on-site charging supporting facilities and shapes a pragmatic low-carbon and green corporate image.
Xinya Dongfang Electricity Technology Co., Ltd.
