New Delhi,6 May:Power generation from the first 500 MW Unit of NTPC- Sipat has been started with its re-synchronization with the Western Grid today. This followed restoration of supply of 20 mcm of water from Hasdeo Reservoir by the Chhattisgarh Government as an interim arrangement. This unit was shutdown from March 08 due to non supply of water.Further discussions are in progress for additional requirement of water for the other units. With this development the pre-commissioning activities of the second 500MW unit have also resumed.On completion, the NTPC-Sipat shall have a total installed capacity of 2980 MW with 2 units of 500 MW in stage II and 3 units of 660 MW in stage I.