Note: this paper was written during 1974 and early 1975, while I was a research fellow at the LEST, with lots of advice and feedback from Rodney Crossley, François Sellier, Jean-Jacques Silvestre and Marc Maurice. I saw the paper as a possible contribution to their comparative work on France...

Translated into English by the author.

Necessary and sufficient conditions are derived for optimal saving in a stochastic neo-classical one-good world with discrete time. The usual technique of dynamic programming is replaced by classical variational and concavity arguments, modified to take account of conditions of measurability...

Comments on economic issues raised by the Monopolies Commission Report Connection Charges for Electricity and Gas, Cmnd. 5036, 1972.