CHC regularly reviews electricity consumption and greenhouse gas emissions, understands the trend and efficiency of operating energy use, is committed to reduction plans and equipped with flexible management strategies, and continues to work hard against global warming. The Group’s greenhouse gas emissions are caused by indirect emissions from outsourcing power purchases, mainly originating from the effluent treatment and reclaimed water plants of the Environmental Project Development Business (HDEC). Therefore, the company uses electricity consumption per ton of effluent treatment as a quantitative management indicator, and the evaluation indicator is based on the wastewater treatment plant in operation. Using 2019 as the base year (the indicator evaluation benchmark value is 0.32), CHC set the goal of reducing electricity consumption per ton of effluent treatment by 5% in 2023.
Measures taken to achieve the Goal:
1. Energy optimization evaluation of high-energy-consuming equipment
Inventory check and review the usage efficiency of high-power equipment in each operating site, evaluate equipment upgrade requirements or develop energy-saving operation plans, as well as draw up the corresponding replacement and maintenance plans.
2. Adjust, update, or install automatic control facilities
Automatic control systems such as time switches and smart controllers for facilities and equipment in the operating field have been installed for timely and flexible regulation in order to improve the energy utilization efficiency of the operating sites.
3. Plan and flexibly adjust the frequency and mode of equipment operation
Adjust the operation mode and frequency of the equipment in accordance with the equipment upgrade plan and changes in the surrounding conditions such as temperature and humidity. For example:
Suspend the operation of the water recovery pump at night, control the fluid level for wet wells, adjust the operating frequency of aeration equipment, etc.
4. Evaluation, implementation, and introduction of smart energy management system
Plan and build an energy management platform for each operating site, and use the smart monitoring system to automatically record, summarize, and analyze energy usage and trends to effectively control and track the energy management performance.
Achievements:
In 2020, the company completed a group-wide energy use inventory and analysis study report. The CEO convened several meetings with all members of the ESG Committee to discuss the Group’s energy management plan for the coming years, and at the same time discussed and established the above-mentioned quantitative management goals, which will be implemented and tracked continually. The actual value of the company’s management evaluation index in 2020 was 0.33 due to the pollution of influent water, which increased the workload effluent treatment and energy consumed. In this regard, CHC actively cooperates with the law enforcement actions of the competent authority and continues to monitor the influent water and to enhance efficiency of water treatment.