MetLife Investment Management was praised by judges for including carbon yield and weighted average carbon intensity (WACI) in its most recent annual impact report.

Calculating avoided emissions, the asset manager's carbon yield methodology was developed alongside the Rockefeller Foundation. Greenhouse gas (GHG) emission measurements in the impact report are shown at both the project and issuer level.

Its WACI measurement, calculated as recommended by the Task Force on Climate-Related Financial Disclosures (TCFD), is compared by MetLife against a benchmark index and broken down by issuer type.

The report assesses environmental and social impact metrics of 97% of the portfolio, representing over 160 countries and over 2,700 projects. MetLife's recent annual impact report also provided an analysis across Scope 1, 2 and 3 GHG emission metrics covering 79% of the portfolio.

"We are delighted to receive Environmental Finance's award for Impact report of the year (for investors). As well as being important for investors, we believe that impact reports play a key role in showcasing the power of impact investment to a broader audience," Tess Evans-Rong, sustainability credit research director at MetLife Investment Management, told Environmental Finance.

"Our reports are the result of many hours of research and analysis and, although our primary focus is our clients, we are proud to be recognised in this way."

Last year, the award was won by Affirmative Investment Management, which has since been acquired by MetLife.