Advantages of Grid
1. Reliability: The system is more reliable because we could serve the load in more than one ways. Output, even if one generation unit fails the rest can share its load.
2. Stability: The system becomes more stable as the chances of a fault disturbing the overall system become less.
3. Economy: In a grid, the cost needed is lesser than a dedicated system because lesser installed capacity is needed as well as lesser spinning reserve is included.