Mizuho Financial Group Inc. and four other domestic companies have received the highest marks for taking steps to tackle climate change, including curbing greenhouse gas emissions, a recent study by a British-based group found.

According to Carbon Disclosure Project's survey, consumer electronics maker Panasonic Corp., computer maker Fujitsu Ltd., major shipping firm Nippon Yusen K.K. and general contractor Shimizu Corp. also performed well due to their readiness to disclose information about measures to fight global warming.

The CDP nonprofit group includes institutional investors worldwide and collects climate change data from the world's major corporations.

It surveyed 500 Japanese companies for the survey, employing criteria such as their level of disclosure about steps taken and progress made in cutting greenhouse gas emissions. Of the companies, 233 responded to questionnaires covering 15 categories, including not only their activities in reducing emissions but how proactive their management is in such activities.