Watch: NBN Co's Sky Muster II blasts off

NBN Co will send its second and final satellite into space at 7:30am AEDT today from the French Guiana Space Centre in South America.

It was originally scheduled to launch early morning on October 5 but was delayed due to high winds.

Sky Muster II will circle the Earth at an altitude of around 36,000km and travel at speeds of up to 28,000km/h once in place above Australia.

The satellite, which weighs 6400kg, will tap into 24 dishes at 10 sites across mainland Australia and five surrounding islands.

It will use most of its 2700kg of fuel within the first two weeks of launching into space as it travels to its designated orbital location, NBN Co said.

The first of NBN Co's two Sky Muster satellites was launched from French Guiana in October last year, with services becoming available from April this year.

The pair provide long-term satellite service (LTSS) access to the NBN for 400,000 premises. Sky Muster II will boost the total capacity of both satellites to 135Gbps.

Watch the Sky Muster II launch below.