§ Mr. Rostasked the Secretary of State for Energy (1) if he will list all the Central Electricity Generating Board power stations which combine the sale of heat and electricity; what is their energy output as a percentage of the total; and what is their average thermal efficiency;
(2) what is the current expenditure by the Central Electricity Generating Board on research and development into combined electricity and heat production at existing power stations.
§ Mr. EadieI am asking the Chairman of the Central Electricity Generating Board to write to the hon. Member.