Environmental sustainability indicators (KPIs)

Environmental sustainability indicators (KPIs) are quantitative metrics that assess an organisation's environmental performance in relation to its activities, products or services. They provide objective information on the use of natural resources, greenhouse gas (GHG) emissions, waste generation and other key sustainability aspects, turning environmental management into something measurable and comparable over time.

Types of environmental KPIs for carbon footprint measurement

There are many environmental indicators, and choosing the most relevant ones depends on each organisation's activity and goals. Some of the most common KPIs in carbon footprint measurement, organised by the scopes of the GHG Protocol, include:

Direct emission indicators (Scope 1)

• CO₂ emissions from fossil fuel consumption (natural gas, propane, petrol, diesel).
• CO₂ emissions from industrial processes.
• Emissions of other GHGs (methane, nitrous oxide and others).

See Scope 1 emissions for more detail.

Indirect energy emission indicators (Scope 2)

• Electricity consumption (kWh).
• CO₂ emissions associated with that electricity (emission factor, location-based or market-based).
• Thermal energy consumption (steam, hot water).
• CO₂ emissions associated with thermal energy.

See Scope 2 emissions for more detail.

Indirect value-chain emission indicators (Scope 3)

• GHG emissions from transport and distribution of products.
• GHG emissions from business travel.
• GHG emissions from the use and end-of-life of sold products.
• GHG emissions from waste management.

See Scope 3 emissions for more detail.

Examples of environmental KPIs by sector

How environmental KPIs are applied varies by industry. Some examples:

• Manufacturing: CO₂ intensity per unit of product, water consumption per unit, share of recycled waste.
• Energy: CO₂ emissions per kilowatt-hour generated, share of renewable energy in the mix, energy efficiency of facilities.
• Transport: CO₂ emissions per kilometre, fuel consumption per kilometre, share of electric vehicles in the fleet.
• Construction: carbon footprint of materials, building energy use, construction and demolition waste management.

Benefits of using environmental KPIs

Implementing a system to manage environmental KPIs offers organisations several benefits:

• Better environmental efficiency and lower operating costs.
• Compliance with environmental regulations and access to incentives.
• A stronger corporate image and brand reputation.
• Easier access to finance and responsible investment.
• Stronger relationships with stakeholders.

Why environmental KPIs matter for the carbon footprint

The carbon footprint, defined as the total GHG emissions of an organisation, product or service, has become a key indicator of environmental impact. Environmental KPIs play a central role in measuring and managing it, because they let organisations:

• Quantify emissions: KPIs provide a solid basis for measuring and recording GHG emissions using recognised methodologies such as the GHG Protocol.
• Identify areas for improvement: analysing KPIs reveals the main emission sources and where reduction measures will be most effective.
• Set targets: KPIs allow specific, measurable, achievable, relevant and time-bound (SMART) reduction objectives, including science-based targets.
• Monitor progress: tracking KPIs regularly shows whether reduction strategies are working and where to adjust.
• Communicate performance: KPIs provide objective, verifiable data to report environmental performance to investors, customers and regulators, increasingly required under frameworks such as the CSRD.

At Manglai we help companies define the right environmental KPIs, measure their carbon footprint and prepare their sustainability reporting. Discover how Manglai can help you.