What's In It For Roger Harrabin?

Roger Harrabin writing on the BBC News website about Carbon Capture technology.

Only thing, he’s definitely NOT writing as a BBC journalist. This sentence in particular is more than your usual BBC reporting:

I believe that [Carbon Capture] will prove feasible, if costly

The above looks like some kind of informed opinion. But usually a BBC journalist like any other journalist would quote the people whose opinion is being reported.

Not in this case. We are hearing what Harrabin himself thinks of a subject.

On what basis are we supposed to put trust on his thoughts? Is Roger Harrabin a recognised expert in the field of carbon capture? Or any other field for that matters?

Perhaps he is. But then we should be told.