New Delhi, Sep 19 (UNI) The Centre has issued detailed operational guidelines for its Rs 23,731-crore GOBARdhan scheme, laying down mechanisms for assured purchase of compressed biogas (CBG), administered pricing, capital assistance, pipeline connectivity and credit guarantees in a major push to expand India''s waste-to-energy sector. The National Circular Bioenergy Scheme, approved by the union Cabinet on August 6, will run from 2026-27 to 2035-36 and seeks to increase domestic CBG production nearly ten-fold.