1. The number of projects undertaken by xxx had accounted for __% of the total projects in the country, ranking xxx the top in the country.
The number of projects does not rank the top, it is the company undertaking the projects which get the ranking.
2. By the end of 2011, the area of energy-efficient buildings undertaken by xxx had totaled up to __ million square meters, making it the top in the country.
Again, the area or scale does not rank the top, it is the developer or the company who built the buildings which is ranked.
not a teacher