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To calculate Carbon Intensity, Sustainalytics uses total Scope 1 and Scope 2 emissions – in metric tons of carbon dioxide-equivalent – and divides this figure by revenue.

• Sustainalytics scores carbon intensity by comparing the figure to the industry median.
• The industry median refers to the median intensity for all companies within the same industry.

Once Sustainalytics reviews details and calculates the carbon intensity, we assign a score based on the following thresholds: 

To calculate Carbon Intensity Trend, Sustainalytics examines performance for the defined baseline year and compares it to the average performance of the three preceding years.

• The calculation is based on the filing currency for revenue.

Once Sustainalytics reviews details and calculates the carbon intensity trend, we assign a score based on the following thresholds: 

This indicator assesses a company's water withdrawal intensity performance by comparing its water withdrawal intensity in a given fiscal year to the median intensity of its industry group.

Sustainalytics adopts the Global Reporting Initiative (GRI) Global Sustainability Standards Board (GSSB) G4-EN8 definition of water withdrawal. We define it as the “sum of all water drawn from surface water, groundwater, seawater, or a third party for any use over the course of the reporting period​."

• Water Intensity is calculated using the water withdrawal (in cubic meters) divided by revenue (in million USD revenue).
• The water intensity is scored by comparing the figure to the industry median.
• The industry median is the median of intensities of all companies within that industry.

Once Sustainalytics reviews details and calculates the water intensity, we assign a score based on the following thresholds:

This indicator assesses a company's performance, over time, on water withdrawal intensity. It compares the company's water withdrawal intensity in a given fiscal year relative to its three-year average (i.e. the last three fiscal years researched).

Once Sustainalytics reviews details and calculates the water intensity trend, we assign a score based on the following thresholds:;

This indictor assesses the performance of a company's power generation freshwater intensity by comparing its freshwater intensity in a given fiscal year to the median intensity of its industry group.

• In the Water Intensity Trend assessment, the defined base year is compared to the average performance of the three preceding years.
• The calculations are based on the filing currency for revenue.
• The indicator score depends on the level of decrease/increase in water intensity over time.

Once Sustainalytics reviews details and calculates the freshwater intensity for generators, we assign a score based on the following thresholds:

This indicator assesses sulphur oxide (SOx) intensity performance by comparing the gross SOx emissions of a company in a given fiscal year to the median intensity of its industry group.

Sustainalytics calculates SOx intensity as a company’s annual gross SOx emissions (in metric tons) divided by its annual revenue (in million USD).

This indicator information is reflected within the Exposure score (beta signal) rather than in the Management score.

Once Sustainalytics reviews details and calculates the SOx intensity, we assign a score based on the following thresholds:

This indicator assesses nitrous oxide (NOx) intensity performance by comparing the gross NOx emissions of a company in a given fiscal year to the median intensity of its industry group.

Sustainalytics calculates NOx intensity as a company’s annual gross NOx emissions (in metric tons) divided by its annual revenue (in million USD).

This indicator information is reflected within the Exposure score (beta signal) rather than in the Management score.

Once Sustainalytics reviews details and calculates the NOx intensity, we assign a score based on the following thresholds: