date: Fri, 2 Nov 2001 17:21:54 -0000 from: "Ian Bateman" subject: Re: cost of carbon to: "Mike Hulme" Hi Mike Thanks for this. I did look at a variety of literature but the Fankhauser work seemed far more convincing in terms of the physical science underpinning it - most of the economic models seemed to be based on awful science. That sadi the figures are based on about 1992 which means that they should be inflated somewhat to todays levels - but not that much. Best guess would be about £35-40 - which I guess is not that much lower than the Shell value - but lots less than the opening auction bids. When we get a chance (if ever) lets talk it over Cheers Ian ----- Original Message ----- From: "Mike Hulme" To: Sent: Wednesday, October 31, 2001 10:25 AM Subject: cost of carbon Ian, Thanks for the reprint. Good to know what work you've been doing. One quick comment - I know its not central to your outcome, but the adopted (Fankhauser) C value of about $25 per tonne seems very low to me. The opening price in the UK emissions trading auction this year is at £100/tonne, although it may well trade below that. And elsewhere, Shell have been embedding costs of $60/tonne into their business planning. Probably just shows that we have no sound basis for valuing C at the present time. Mike