The services were set up at a cost of Rs 1.95 crore.
The Chief Minister had announced in the 2014-15 budget that her government would launch e-Seva centres offering a host of services.
A pilot launch was made in the city in in 14 e-seva centres on February 24, 2014.
Through such e-Seva centres, 1.15 crore people have benefitted so far, an official release said.
As part of formally implementing the scheme, Jayalailthaa formally launched 126 e-Seva centres across Chennai through video conferencing facility from the Secretariat.
It said the Centres would also accept cash payment of electricity bills.
IT Minister 'Mukkur' N Subramanian, Chief Secretary K Gnanadesikan, Advisor to Government Sheila Balakrishnan were among those present on the occasion.