Section 22(c) in The Central Electricity Regulatory Commission (Open Access in Inter-State Transmission) Regulations, 2004
(c)A composite request for open access and scheduling to utilise surpluses known after issuance of the first despatch schedule by Regional Load Despatch Centres at 5.00 PM, must be submitted to the nodal Regional Load Despatch Centre latest by 10.00 PM or preferably earlier. The nodal Regional Load Despatch Centre shall endeavour to incorporate the same in the revised despatch schedule to be issued by the Regional Load Despatch Centres concerned, if the request can be accommodated without causing congestion.
