§ Mr. Leeasked the Secretary of State for Energy if he is satisfied that adequate use is being made of the energy potential of sewage and if he will make a statement.
§ Mr. EadieThe production of methane from sewage sludge is being widely practised in the United Kingdom. Its recovery and use on sewage works is making a useful and worthwhile contribution to energy conservation. The process is most economical when carried out on a large scale, and the latest available statistics show that installations for the recovery of methane are in operation in nearly three-quarters of the large sewage treatment plants in this country. The methane recovered provides a cheap source of energy for those sewage plants and is more or less fully utilised in meeting the internal energy requirements at sewage works and there is virtually no surplus gas available for sale for external use.