In 2025, CNOOC conducted an environmental assessment and disclosed corporate waste management data in accordance with recognized sustainability reporting standards.The company provided a breakdown of its waste by type (hazardous vs non-hazardous) and treatment method (recovery vs disposal), enabling greater transparency into its waste handling and environmental practices.
| Metric (tonnes) | 2025 | 2024 | 2023 | 2022-2019 |
|---|---|---|---|---|
Total Waste Generated | 139,930a | 145,776a | 135,111a | |
Total Waste Recovered | 13,433.28a | N/A | N/A | |
Total Hazardous Waste Generated | 65,921a | 75,892a | 63,727a | |
Non-Hazardous Waste Disposed | 74,009a | 69,884a | N/A |
You are welcome to quote or reference individual data points from this page, provided you include the following attribution with a visible, clickable link to this page: "Source: Tracenable, the global reference for ESG data"
Bulk collection, scraping, resale, or redistribution of data across multiple company profiles is not permitted without our prior written permission. For more information, see our General Terms and Conditions.
Every figure on this dashboard has a transparent audit trail. With Tracenable, each data point is traceable back to its original source, viewable directly inside our platform.
In 2025, CNOOC generated a total of 139,930metric tonnes of waste.a
Of this amount, 9.6% of CNOOC's total waste generated was recovered through methods such as recycling, reuse, or composting, while 100% was disposed of through landfilling, incineration, or combustion.a
In 2025, CNOOC reported a total waste generation of 139,930 metric tonnes, of which 9.6% was recovered through recycling, reuse, or composting.This low recovery rate highlights limited waste diversion and suggests that CNOOC may be relying more heavily on landfill or incineration, underscoring opportunities for stronger resource recovery initiatives.a
Since 2023, CNOOC's total waste generation increased by 3.57%, but declined by 4.01% in the year 2025, suggesting a potential shift toward more efficient material use or the early impact of waste reduction strategies.a
In 2025, CNOOC generated a total of 139,930 metric tonnes of waste.a
Of this amount, 47.11% of CNOOC's total waste generated of was classified as hazardous waste, characterized by properties such as toxicity, flammability, corrosiveness, or reactivity that may pose risks to human health, ecosystems, or the environment.52.89% was identified as non-hazardous waste, generally considered less harmful and subject to lighter regulatory controls.a
Since 2023, CNOOC's total waste generation rose by 3.57%, but dropped by 4.01% in 2025, indicating a possible turning point driven by improved waste-reduction practices or production slowdowns.a
Over the same period, CNOOC maintained relatively stable levels of hazardous waste in the long run, but saw a 9.51% drop in 2025, potentially signaling the beginning of a positive downward trend.a
Overall, CNOOC's waste and hazardousness trends are mixed or inconclusive. A more detailed review of its materials, industry standards, and operational changes would help clarify the net environmental impact of its waste strategy.a