Kumar flagged off a fleet of such buses at the chief ministers secretariat and took a ride himself to the Vidhan Sabha, a kilometre away, for taking part in the days proceedings.
Initially, he wanted to introduce 1,000 such buses at one-go but later reduced the number to 350 because of 'logistic reasons.'
The Home Minister also inaugurated the country's first automated battery charging and swapping station for e-buses here.
The 50 electric buses will operate on a public-private partnership basis and will be seen on Goa's roads by November.
Now passengers travelling to airport can have a noiseless and eco-friendly travel with TSRTC buses turning green. 100 buses were sanctioned for Hyderabad, out of which five were flagged off, and 40 buses would be deployed to improve airport connectivity.
HMR managing director NVS Reddy said the travel time between Miyapur and Nagole would come down further with the increase in frequency and speed in the coming days.
The idea was to go green and State government too was pitching for electric vehicles and was coming up with a policy as well, said a senior official from TSRTC.
The company has completed 50,000 kms of commercial run on Indian roads - in Mumbai and Himachal - and additional 50,000 kms under trial run in various cities including Hyderabad, Bengaluru, Goa, Rajkot, Chandigarh and Delhi.