Interfax Information Services Group has developed a rating to assess Russian regions in terms of the fundamental efficiency and environmental responsibility of their businesses.

The top five regions in the ranking for 2012 are Chuvashia, Buryatia, Oryol Region, Kaluga Region and Marii El Republic.

The rating, based on an assessment of the environmental and energy efficiency of 4,000 businesses from all regions of Russia, has been assigned for every one of the country