In announcing the proposed study for an electricity interconnector between Scotland and Norway ( Plan for Norway energy sea link , The Herald, February 2) our First Minister once again draws attention to Scotland s potential to become, in his own words,  the Saudi arabia of green energy  and cites a potential offshore renewables resource of 206 gigawatts.  adding onshore wind brings the total close to 300GW but this begs the question as to whether this huge amount of generation capacity is actually needed, given that Scotland s annual consumption was satisfied by an average of a mere  3.66GW in 2006 according to a Scottish Government study. We can put this figure of 300GW in context if we co