for $9m outlay they can build an energy plant that produces5MW...

for $9m outlay they can build an energy plant that produces

5MW of power &
35k tonne a year of Biochar which goes for $400 a tonne or about $14m in revenue.

Biochar being an agricultural fertiliser.

article below is about garnaut pushing strongly for carbon in soil to be part of the Carbon scheme.

Whilst he does not mention biochar in this article he does mention it in his paper on the benefits for the rural sector in being included in the carbon sceme.

http://www.theaustralian.com.au/news/nation/climate-adviser-garnaut-pushes-soil-carbon-scheme/story-e6frg6nf-1226039409125