The environmental dimension of sustainability concerns an organization’s impacts on living and non-living natural systems, including ecosystems, land, air, and water. Environmental Indicators cover performance related to inputs (e.g. material, energy, water) and outputs (e.g. emissions, effluents, waste). In addition, they cover performance related to biodiversity, environmental compliance, and other relevant information such as environmental expenditure and the impacts of products and services.

ASPECT: MATERIALS
EN1 Materials used by weight or volume.
EN2 Percentage of materials used that are recycled 
input materials. 

ASPECT: ENERGY
EN3 Direct energy consumption by primary energy source.
EN4 Indirect energy by primary source.
EN5 Energy saved due to conservation and efficiency improvements.
EN7 Initiatives to reduce indirect energy consumption and reductions achieved.

ASPECT: WATER
EN8 Total water withdrawal by source, mitigation initiatives and improvement results.
EN10 Percentage and total volume of water recycled and reused.

ASPECT: BIODIVERSITY
EN12 Description of significant impacts of activities, products, and services on biodiversity in protected areas and areas of high biodiversity value outside protected areas.
EN13 Habitats protected or restored.
EN14 Strategies, current actions, and future plans for managing impacts on biodiversity.

ASPECT: EMISSIONS, EFFLUENTS, AND WASTE
EN16 Total direct and indirect greenhouse gas emissions by weight.
EN18 Initiatives to reduce greenhouse gas emissions and reductions achieved.
EN21 Total water discharge by quality and destination, mitigation initiatives and improvement results.
EN22 Total weight of waste by type and disposal method, mitigation initiatives and improvement results.

ASPECT: PRODUCTS AND SERVICES
EN26 Initiatives to mitigate environmental impacts of products and services, and extent of impact mitigation.

ASPECT: COMPLIANCE
EN28 Monetary value of significant fines and total number of non-monetary sanctions for non-compliance with environmental laws and regulations.

ASPECT: TRANSPORT
EN29 Significant environmental and social impacts of transporting products and other goods and materials used for the organization’s operations, and transporting members of the workforce.
EO1 Significant environmental and social impacts of transporting attendees and participants to the event, including mode(s) of transport taken by attendees to reach the event, reported as a percentage.