Yes on your GATE exam score basis you can appear in Power Grid Corporation of India Limited recruitment exam , I am sharing info for which you have came here :

Power Grid Corporation of India Ltd. (PGCIL) has published recruitment notice for the post of Executive Trainee – 21st Batch . Apply Online before 12 February 2016.

Advt. No. : CC/ 05/2015

Job Details :
Post Name : Executive Trainee
No. of Vacancy : Not Specified
Pay Scale : Rs. 24900-50500/-

Eligibility Criteria:
Full Time B.E./ B.Tech/ B.Sc (Engg.) from recognized University/ Institute Minimum 65% or Equivalent CGPA with Valid Score in the GATE 2016.
Nationality : Indian

Age Limit :
28 years
For SC Candidates : 5 Years
For OBC (Non Creamy layer) Candidates : 3 Years
For PwD Candidates : 10 Years

Job Location : All India

Selection Process :
Selection Process consists of marks obtained (out of 100) in the corresponding paper of GATE 2016, Group Discussion & Personal Interview.

How to Apply :
Eligible Candidates may apply Online through the website from 15.01.2016 to 29.02.2016.

Key Dates:
Starting date for Submission of Online Application : 15.01.2016
Last Date for Submission of Online Application : 29.02.2016

Power Grid Corporation of India Ltd recruitment notice