In 2025, National Grid 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 |
|---|---|---|
Total Waste Generated | 455,319a | 331,612a |
Total Waste Recovered | 384,018a | 259,224a |
Total Hazardous Waste Generated | 15,979a | 20,108a |
Non-Hazardous Waste Disposed | N/A | N/A |
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In 2025, National Grid generated a total of 455,319 metric tonnes of waste.a
Of this amount, 3.51% of National Grid'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.96.49% was identified as non-hazardous waste, generally considered less harmful and subject to lighter regulatory controls.a
Since 2025, National Grid's total waste generation has increased by 37.3%, which may reflect expanding operations, weaker material efficiency, or insufficient waste reduction efforts.a
Since 2025, National Grid's hazardous waste generation has increased by 42.12%, indicating a potential rise in the use of harmful materials, process inefficiencies, or limited hazardous waste reduction strategies..a
Overall, National Grid'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