BT Group, Hammerson, Sainsbury, Whitbread, Pearson and Vodafone rounded out the highest ranked companies for carbon measurement and reporting.
The Carbon Reporting Performance of the FTSE 100, which ranks companies against 47 carbon reporting criteria, reported that for the second year, the supermarket sector was the best performing sector and manufacturing performed the worst.
The top performing sectors following supermarkets were publishing, media and advertising, waste and water, and retail. The lowest scoring sectors included mining and metals, engineering and machinery, real estate and facilities, and building materials.
Companies were scored in four broad subject areas: measurement, reporting and verification; carbon strategy; carbon reduction; and engagement. Carbon Clear conducted its research in July 2012 using publicly available data.
Carbon Clear found companies performed best in the measurement verification and reporting competency area with an average score of 58 percent. The worst performance was in the carbon reduction competency area, where companies had an average score of 30 percent. Companies were scored based on whether carbon reductions could be demonstrated, either absolute reductions or relative reductions. Future objectives and plans to achieve them were also evaluated and affected the score.
The Carbon Disclosure Project, which released its annual report last month on the carbon reporting and disclosure efforts of FTSE 350 companies, ranked Anglo American, Diageo, Mondi, Morgan Crucible, Reckitt Benckiser and Unilever as the top five performing companies.
“The Future of Reporting: CDP FTSE 350 Climate Change Report 2012,” which was co-written by PricewaterhouseCoopers, found that more than two-thirds of the 240 FTSE companies that responded to CDP already comply with mandatory carbon reporting regulations set to begin next year in the UK.