asked the Secretary of State for Energy if he will now make a statement of his policy on the Marshall report on combined heat and power; and when he will be authorising a design study or a project on such a scheme for the more efficient use of energy.

	Holding at 1979	Arisings*by 2,000
	Cubic Metres
Fuel cladding, sludges and miscellaneous wastes from earlier processes	19,000	39,000
Plutonium contaminated wastes	3,500	10,000
Wastes stored at power stations	20,000	36,000
* The extent of the holdings by 2,000 will be dependent upon the use made of existing disposa routes and upon the treatment of the wastes.

Estimates for the year 2000 are taken from the recently published report of the expert group which reviewed Cmnd 884, "The Control of Radioactive Wastes", and are based on the reference case in the energy policy Green Paper (Cmnd 7101) which envisaged 40 GW of nuclear power by the year 2000. The programme of 15 GW referred to on 18 December falls short of that reference case, and to that extent the above figures are likely to be overestimates.