Power Grid's scrip gained 2.56 per cent to settle at Rs 148.05 on BSE. During the day, it rose by 2.84 per cent to Rs 148.45.
Shares of BHEL however, ended 0.59 per cent lower at Rs 118.55.
State-run BHEL will be dropped from the BSE's benchmark index Sensex from June 20 and will be replaced by Power Grid Corporation of India.
Effective at the open of Monday, June 20, BHEL will exit from 30-share bluechip index and Power Grid will make an entry.
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Cairn India would move out from BSE 100 index, while various changes have been made to a host of other indices as well.
The BSE-100, an index of the top 100 listed companies in the country would see Bajaj Finance coming in.
Shares of Cairn India went up by 1.02 per cent, while Bajaj Finance slipped 1.64 per cent on BSE.
The changes were announced on Friday by Asia Index, a JV between S&P Dow Jones Indices LLC and BSE.