The only other two energy and utility companies which appear on the list are AGL Energy, which came first, and Worley Parsons, which came 35th.
ACSI was established in 2001 in order to provide a strong, collective voice on environmental, social and governance issues on behalf of its members.
"Our members include 38 Australian and international asset owners and institutional investors, which, collectively, they manage over $A2.2 trillion in assets and own on average 10% of every ASX200 company.
"Our members believe that environmental, social and governance risks and opportunities have a material impact on investment outcomes. As fiduciary investors, they have a responsibility to act to enhance the long-term value of the savings entrusted to them.
"Through ACSI, our members collaborate to achieve genuine, measurable and permanent improvements in the ESG practices and performance of the companies they invest in," ASCI said.
ACSI provides consulting services on environmental, social and governance and related policy development.