Environmental Performance
Waste Collection and Management
ECOVE Waste Management Corp. provides waste collection and transportation, as well as waste incineration residue removal services. The number of customers it served exceeds 12,853 metric tons. In 2025, the total amount of waste collected and managed by ECOVE was 182,237 metric tons, which accounted for 21% of the total amount of waste collected and managed by domestic large-scale municipal waste recycling (incineration) plants on behalf of private organizations. To enhance waste quality management, ECOVE has deployed an intelligent management system covering inbound contractor qualification review, waste approval, data setup, and statistical analysis, with integration into the Ministry of Environment's reporting platform to accelerate and ensure accurate, lawful reporting, enable realtime monitoring of inbound information, and effectively control quality. The system also provides real-time updates on regulations and inbound information, maintains a list of materials unsuitable for incineration, strengthens incineration plant management, and analyzes the characteristics of waste from dierent regions to improve incinerator combustion efficiency. The decrease in the volume of managed waste received in 2025 was due to the return of the Wujih plant's operating rights to the Taichung City Environmental Protection Bureau in September 2024, after which only contract operation remained without any self-collected volumes, combined with the commencement of operations at the Hsinchu County High-Eciency Renewable Energy Center.
Statistics on total waste collected and managed by ECOVE (metric tons)
To enhance incineration efficiency, maintain treatment performance, and ensure the safety of clearance contractor vehicles entering the plant, ECOVE Waste Management conducted on-site coaching and audits of business entities (waste generators) and clearance contractors entering its plants in 2025, covering 47 business entities and 1 clearance contractor. Through audits, the company checked the quality of the production process, the output and storage conditions of waste, the clearance permit deadlines, and the proper operation rates of waste transport vehicles. Additionally, we promote relevant environmental regulations and the management specifications for the entry and exit of incineration plants, providing recommendations for optimizing waste management.
2025 Audit Findings and Results
To improve clearance and transportation eciency, a Clearance Dispatch Management System has been deployed, with digital capabilities for vehicle dispatch, driver management, and vehicle management, eectively reducing paperwork and improving clearance efficiency. The system also integrates breathalyzer testing and attendance anomaly management mechanisms to strengthen driving and personnel safety, and uses Application Programming Interface (API) reporting functionality to improve the accuracy of reported weights. The system continues to optimize its operating interface and processes to comprehensively enhance management eectiveness and ease of use.
Waste-to-Energy Performance
ECOVE has long been engaged in the operational management of energy and resources centers (waste incineration power plants and biomass energy centers). It converts high calorific value waste into electrical energy through incineration technology, while low calorific value waste is processed through advanced naerobic fermentation to generate biogas for electricity production, which is then resold as one of Taiwan's sources of electricity. This process not only reduces dependence on fossil fuels but also effectively decreases the environmental pollution caused by waste landfill. In Taiwan, ECOVE manages a total of eleven large energy resource centers in Taiwan1, as well as two small-scale industrial waste incineration plants. The company undertakes operations for ten local environmental protection bureaus and government agencies. In 2025, the total amount of waste entering the large-scale energy resource centers (general waste and general utility waste) was 2,446,770 metric tons, and ECOVE Environment Service Corp. accounted for 38.40% of the total amount of waste entering the plant in Taiwan2. The energy resource centers reported that the total amount of general waste accounted for 71.58% of the total incoming volume; the amount of general industrial waste represented 28.42% of the total incoming volume. According to the latest statistics released by the Ministry of Environment, the average waste generated per person in Taiwan is approximately 1.37 kilograms3 per day. The processing volume at ECOVE corresponds to the annual waste generation of approximately 8.98 million people. In 2025, the anaerobic treatment volume from kitchen waste reached 19,902.93 metric tons. Additionally, in 2025, the incineration capacity for general business waste at small-scale incineration facilities was 32,836 metric tons, while the processing volume for hazardous business waste was 511 metric tons, which constitutes 0.018% of ECOVE's total processing volume. In addition to Taiwan, our waste incineration services have also expanded overseas, with our subsidiary SINOGAL undertaking general waste disposal business in the Macau region. With a local population of approximately 690,000 people, the total intake of waste from January to September 20254 was 435,230 metric tons, of which general waste accounted for 73.21% of the total, and general industrial waste accounted for 26.79% of the total. The total amount of waste processed through energy recovery incineration and kitchen waste treatment is
2,867,133 metric tons
Note1 : The 11 large Energy and Resources Centers include the Keelung, Southern Taoyuan, Taoyuan Biomass Energy Center (equipped with anaerobic food waste power generation facilities), Miaoli, Houli, Wurih, Xizhou, Chiayi City, Chengxi, Gangshan, and Taitung Energy and Resources Centers. The small industrial incineration plants are the Taoyuan Airport Resource Center and the Southern Taiwan Science Park Energy & Resource Center. Note 2 : The main source of data is from the Solid Waste Incinerator Management System (SWIMS) of the Environmental Management Administration, Ministry of Environment. Based on the total waste intake of 6,372,359 metric tons from 27 waste incineration plants in Taiwan in 2025. Note 3 : According to the Ministry of the Environment's announcement of the average statistics (2023/10 − 2025/09) (https://data.moenv.gov.tw/dataset/detail/STAT_P_126, announced on 2026/01/15). Note 4 : SINOGAL's operations ended on 2025/09/24, and the statistical data covered the period from 2025/01/01 to 2025/09/24 .
Energy-from-Waste
The Energy and Resources Centers operated and managed by ECOVE not only treat waste but also generate electricity from the heat produced by incinerating waste, with a waste-to-energy ratio of 98.84%. In 2025, a total of 2,880,577 metric tons of waste was incinerated1, generating a total of 1,651,091 MWh of electricity. After deducting the energy and resources center's self-consumption, the total amount of electricity to be sold back to the power company was about 1,351,955 MWh, which means that 81.88% of the total amount of electricity generated will be exported to the power grid. The electricity to be sold back in 2025 can supply the annual electricity consumption of approximately 330,000 customers in Taiwan2 and 21,000 customers in Macau3. With the electricity generated from the incineration plant, a total of about 806,600 metric tons of CO2e was reduced in 2025 for Taiwan and Macau power companies. The anaerobic digestion power generation system for kitchen waste has achieved an electricity output of 2,193.8 MWh, resulting in a carbon reduction of 1,039.9 metric tons of CO2e。 Note 1: The waste used for power generation accounts for 98.84% of total waste processed; the dierence is due to the two small plants not being equipped with waste-to-energy power generation facilities. Note 2: According to Taiwan Power Company (Taipower), the average household electricity consumption from January 2025 to December was ,3,666 kilowatt-hours (kWh) per household. Note 3: According to CEM's 2024 annual report, average annual household electricity consumption in Macau is approximately ,6,621 kWh.
Solar power
Solar photovoltaics is one of the world's most important clean energy sources and one of the key development projects of the National Development Council's "12 Key Strategies Toward National Net Zero." ECOVE actively focuses on the development, investment, construction and operation of solar power systems. By the end of 2025, the cumulative developed capacity both domestically and internationally is approximately 148 MW. The Company has collaborated with key partners such as the Taiwan High Speed Rail, Kaohsiung Metro, Taipei Metro, Taoyuan Metro, Taichung Metro, Taiwan International Ports, and Tainan City Government to complete multiple project installations, ensuring a stable supply of renewable energy. Furthermore, with the integration of renewable energy generation into the power grid, Taiwan Power Company has launched a power auxiliary service market to address its volatility and promote the development of energy storage systems. ECOVE has currently established a 5 MW energy storage project, providing Taiwan Power Company with ancillary services to assist in the stable operation of the power grid. With the amendments to the Electricity Act and the Renewable Energy Development Act, Taiwan has fully opened up direct supply, transfer, and sales transactions for renewable energy, providing enterprises with more options for green electricity procurement. ECOVE has long been deeply engaged in the solar energy sector in Taiwan and ocially entered the green electricity trading market in 2021, assisting enterprises in achieving their carbon neutrality and net-zero emission goals. As of the end of 2025, 42 MW of green electricity supply contracts have been signed, and eorts to expand collaboration opportunities continue, providing enterprises with the highest quality green energy solutions.
Reuse
Upholding circular economy principles, ECOVE actively promotes the resourcification and high-value utilization of waste, enhancing resource use eciency and reducing environmental impact through process optimization and technological innovation. In waste solvent management, the Company has deployed recycling and regeneration technologies to purify waste isopropyl alcohol (IPA) generated by the concentration and purification process, converting it into products meeting industrial specifications and reintroducing them into the market for circular use, effectively reducing the final disposal volume of waste and creating added economic value. In addition, the Company continues to strengthen water resource recycling, using wastewater treatment and regeneration technologies to convert process wastewater into reclaimed water meeting usage standards for industrial cooling and irrigation purposes. This reduces reliance on tap water and natural water bodies and improves water resource eciency.
Waste Solvent Recovery and Carbon Reduction
ECOVE's subsidiary, ECOVE Solvent Recycling Corp., focuses on the high value-added recycling of waste resources. The technology of recycling is extended to apply to the waste Isopropyl Alcohol (IPA) produced by the semiconductor industry, which is then concentrated and purified to be converted into an industrial-grade product that can be re-sold to the market, thus eectively re-utilizing the resources. In addition, ECOVE Environment Services Corp. began formal contract operations in October 2025 for the purification of waste isopropyl alcohol and waste edge bead remover (EBR) for the high-tech industry. In total, approximately 14,502 metric tons of waste isopropyl alcohol and approximately 379 metric tons of waste edge bead remover were processed in 2025, equivalent to a reduction of 10,967 metric tons of carbon dioxide emissions.
Wastewater Treatment and Reclaimed Water
The core operations of ECOVE in the water resource sector encompass three main categories: wastewater treatment, river restoration, and water resource regeneration. We integrate various technologies, including primary treatment, secondary treatment, advanced treatment, and ecological engineering methods, to precisely remove pollutants from water. Furthermore, we aim to achieve the recovery and reuse of water resources, providing comprehensive solutions for the sustainable development of the water resource. To ensure that effluent water quality from wastewater treatment plants meets regulatory standards and to strengthen information transparency, the Company has installed automatic continuous monitoring systems at each plant to monitor euent water quality trends around the clock, ensuring that discharge wastewater quality stably meets standards. In 2025, total wastewater treatment volume reached 27,848.66 million liters. According to the estimation criteria set forth by the Ministry of the Interior's "Technical Specifications for the Design of Sewage Treatment Facilities" (0.23 million liters of wastewater per person per day), the eorts and achievements of ECOVE in wastewater treatment and water resource reuse are equivalent to serving 123.77 million person-days, which corresponds to processing nearly 5.31 days' worth of sewage generated by the entire population of Taiwan.
Wastewater treatment
The current operational site for wastewater treatment is Linkou Water Resources Plant. The treatment process consists of pretreatment and primary treatment to remove garbage and suspended solids from the water, followed by secondary biological treatment to tame microorganisms to remove water-soluble contaminants, and then simple tertiary treatment to produce recycled water for internal/external use.
Wastewater Treatment Volume ｜ million liters/year
River and Streams Rehabilitation
In terms of river restoration, we are responsible for the operation of the New Taipei City Gravel Contact Oxidation Treatment and the Zhonggang Water Resource Center. We are committed to improving water quality by allowing wastewater to flow through underground gravel areas while aerating to supply oxygen. This process enables microorganisms to attach to the gravel, forming a biofilm that decomposes pollutants and eectively enhances water quality. In addition, the ground facilities combine an ecological park and observation corridors, serving the functions of ecological conservation, recreation, and environmental education. This not only improves the water environment but also provides the public with opportunities to connect with nature and learn about th water resource cycle.
Water Reclamation
The Company continues to deepen its presence in the water resource regeneration sector, with contract-operated sites covering important facilities such as the TSMC Southern Taiwan Science Park Wastewater Reclamation Plant and the Linkou Water Resources Recycling Center. Through the deployment of advanced water treatment and regeneration technologies, process and domestic wastewater is converted into reclaimed water resources meeting reuse standards, eectively improving the water resource recycling rate. The TSMC Southern Taiwan Science Park Wastewater Reclamation Plant utilizes advanced membrane filtration methods to remove contaminants from water. It employs technologies developed by the Industrial Technology Research Institute, including Biological New Environmental Technology (BioNET), anaerobic fluidized bed (AFB), and fluidized bed crystallizer (FBC), to conduct in-depth treatment of specific pollutants such as boron and nitrogen, ensuring that the water quality meets the standards required for high-tech manufacturing processes. By further integrating the reclaimed water produced by the Yongkang and Anping Water Resources Centers, the plant supplies 67 million liters of water per day to the high-tech industry. In 2025, total reclaimed water supply reached 23,349.60 million liters, equivalent to one day's water withdrawal for 80.794 million people, continuing to enhance water resource effeiciency.
