PSLV is capable of launching 1600 kg satellites in 620 km Sun-synchronous polar orbit and 1050 kg satellite in geo-synchronous transfer orbit (GTO), which puts a limitation on launching heavier communication satellites.
GSLV will be capable of launching satellites which are 2000 kg-2500 kg which matches with the GSAT class of communication satellites.
India is now compelled to outsource the launch services from abroad which are not a cost effective solution, which is why a proven GSLV launcher is crucial.
The successful development of indigenous cryo stage will boost India's confidence in terms of its self-reliance in the launch capability, according to ISRO officials.
