MrBentleysaid RMB still backed the scheme and was "evaluating project debt capacities under a range of varying gold price scenarios in order to assist the company in evaluating an optimal approach to financing the project".
"Britain's North Sea gas supplies are running out and British Gas has to pay the going rate for gas in a competitive global marketplace, " saidMrBentley.
MrBentley told the BBC's Newsnight that British Gas was making the changes because its customers had said they did not like the current pricing structures.