On the following website

http://www.carbonmarketdata.com

you can access for free (through a free registration) to the EU Emissions Trading Scheme (ETS) Database. The EU ETS Database is a comprehensive analytical tool, which includes information on all EU ETS installations with their contact details, sector of activity, distributed allowances, verified emissions data and compliance status.

You can look at data per country, sector of activity and installation.

You will also be able to access to the carbon emissions data of more than 150 iron and steel companies.

(Copyright rules apply)

http://www.nationmaster.com/index.php

You might at least make a pitch in their forum section.

Good luck.