Not had a chance to read them yet, but here is the MAG submission to the Davies Commission
http://www.magworld.co.uk/magweb.nsf/AttachmentsByTitle/LongTermCapacity/$file/Long+Term+Capacity+Options.pdf
Edit This doesn't seem to want to hotlink, so go here
MAG World - Home
Type Davies Commission in the search box in the top RH corner and it's the document entitled long term options
And here is the transcript of the Oral evidence session featuring MAG which was held in London; the Manchester session covering the environment.
https://www.gov.uk/government/upload...-july-2013.pdf