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One of the good things about the European Emissions Trading scheme is the publicly available data it generates – you don’t get anything like this with a taxation policy. The only problem is the official data source can appear impenetrable and is not designed to be easy to interpret. So to bring this policy to life we’ve spent the last few weeks adapting the EU’s official data set for 2008 and today we are pleased to unveil our [new Google map](http://sandbag.org.uk/new_map “”) – covering 27 countries and over 10,000 installations. A huge debt of thanks is owed to Louise Crow of mySociety for all the hard work she has put into making this possible with absolutely the minimum of fuss.

There is lots we can do to develop this map further but for now we’ve set it up to compare 2008 emissions levels with 2008 allocations of pollution permits. The dots coloured in red show sites which have been given more permits than they needed and so are in a position to sell at a profit. The green dots indicate those sites which have to buy permits to cover their emissions. Sadly the sellers clearly outnumber the buyers. A result of too generous allocations and weak caps as highlighted in our recent report.

As for navigating the map – you can select different countries and then search by location within that country. You can also select just the top 10 sites who are currently benefiting from an oversupply of permits – 9 of which are iron and steel works – and also the top 10 emitters in the EU overall.

We’ve also added a feature that enables people to suggest corrections to the data so we can help to clean it for future use. The underlying data can also be downloaded here for anyone to play around with. We’d be delighted to hear from anyone doing interesting stuff with it. And to receive suggestions for what we could be doing differently or better.

We’ve enjoyed bringing the data to life in this way – we hope it will prove to be a useful tool – all feedback welcome.