Applications of PowerLink CHE series microgrid energy storage systems in commercial complexes

Are you, as a commercial complex operator/facility manager, repeatedly troubled by the following issues?

• High peak-hour electricity prices and continuously rising energy costs are squeezing profit margins;
• Grid fluctuations and the risk of sudden power outages threaten the stability of core systems such as elevators, central air conditioning, and merchant operations;
• Conventional energy sources: Diesel generator sets are noisy and consume a lot of fuel；
• Under the pressure of dual carbon targets, there is no direction for green energy transition, and no effective path for energy conservation and emission reduction.

When a 25,000㎡ Grade A commercial complex in Australia was facing difficulties such as “air conditioning and lighting accounting for 65% of energy consumption, peak-valley electricity price differences eating up 30% of profits, and carbon emissions exceeding standards and facing rectification”, the PowerLink CHE energy storage system (500KW) + distributed photovoltaic power generation combination solution provided a one-stop solution to effectively solve the problems for the client!

Figure 1 CHE Energy Storage Product Application Diagram

CHE Series 500kW Microgrid Energy Storage System Solution

This commercial complex’s energy consumption is heavily reliant on building lighting and central air conditioning systems, which account for over 65% of its total energy consumption. Air conditioning alone accounts for 38.7% of this consumption. Coupled with a 67% peak-to-valley electricity price difference for commercial use and a 39% price increase during peak hours compared to off-peak hours, monthly electricity costs exceed 500,000 yuan, resulting in annual electricity costs exceeding 6 million yuan.

The complex’s original energy system was separate from its building automation system, leading to a 68% fragmentation rate of energy consumption data. This hindered precise load control, and aging equipment resulted in operating efficiency 30% below industry standards, leading to persistently high maintenance costs.

PowerLink has tailored an integrated solution combining a CHE series (500kW) energy storage system with a 1000㎡ rooftop distributed photovoltaic system, creating a closed-loop energy system of “self-generation and self-consumption, surplus energy storage, peak-hour discharge, and intelligent control.”

Installing 1000㎡ of distributed photovoltaic (PV) modules on the rooftops and parking garage canopies of commercial complexes utilizes vast, unused areas. This eliminates the need for additional commercial land use, generating electricity directly to power daily lighting and office equipment. The annual power generation reaches 100,000 kWh, replacing 30% of traditional energy sources and significantly reducing the cost of purchasing electricity from the grid. Excess electricity is fed into the grid to generate revenue, transforming idle space into a “money-making opportunity.” More importantly, PV power is clean energy, giving commercial properties a “green and low-carbon” image, enhancing brand image and market competitiveness.

The microgrid energy storage product selected is the CHE500 model, suitable for industrial and commercial energy storage applications. This product uses lithium iron phosphate batteries and intelligent liquid cooling technology, ensuring stable operation over a wide temperature range of -20~55℃. Its IP54 protection rating adapts to the complex environment of commercial rooftops, and its multi-layered fireproof design provides robust safety.

The energy system is equipped with a dedicated EMS integrated energy management system to achieve real-time monitoring and coordinated scheduling of photovoltaic, energy storage and grid loads. During flat/valley periods, surplus photovoltaic power and low-priced grid power are stored, and during peak periods (9:00-11:00, 17:00-21:00), energy storage power is released first to avoid high electricity prices.

Figure 2 Application schematic diagram of PES series

Case execution results

After 12 months of stable operation, the project has delivered impressive results:

1. Significant cost reduction and efficiency improvement: Annual electricity savings of 4.2 million yuan, including 3.5 million yuan from peak-valley arbitrage and 700,000 yuan from self-consumption of photovoltaic power. Operation and maintenance costs decreased by 8%, equipment failure rate decreased by 60%, and downtime losses were reduced through preventative maintenance.
2. Compliance and carbon reduction targets achieved: Annual carbon emissions reduced by 80 tons, carbon emission intensity decreased to 98 kgCO₂/㎡, successfully passed the two-star green building certification, received a government energy-saving renovation subsidy of 1.2 million yuan, and met the requirement of a 20% reduction in energy consumption for commercial buildings in the “Action Plan for Peak Carbon Reduction by 2030”.
3. Upgraded energy management: Energy consumption data integration rate increased to 100%, precise load control was achieved through the EMS system, peak grid load pressure was reduced by 40%, energy waste was eliminated, and energy optimization was achieved throughout the entire life cycle.

PowerLink Energy Storage Product Introduction

PowerLink has innovatively designed and manufactured the CHE series of commercial energy storage products, featuring interfaces for photovoltaic power generation, diesel power generation, and grid input. These products enable multi-energy complementarity, ensuring the stability and diversity of energy supply. The series boasts a compact design, flexible and convenient deployment, and plug-and-play functionality. It is particularly suitable for applications requiring both grid-connected and off-grid power supply modes, such as leasing, buildings, ports, mining, events, incidents, emergency response, and ship power supply. Power output ranges from 30 kWe to 1000 kWe, and capacity ranges from 104 to 2080 kWh, meeting the diverse needs of various application scenarios.

CHE Series Product Specifications

 Figure 3 CHE series energy storage product schematic diagram