Melbourne will get a long-awaited airport rail link in the next decade, and faster train services to Geelong and Ballarat under a bold plan outlined by Victorian Premier Daniel Andrews.

With the next state election a year away, Labor has begun work on planning for a popular rail link to the airport.

While there is no date on the start of construction or completion, Mr Andrews told business groups in a speech this morning that by the time the Metro Rail Tunnel is completed in 2026, work will be well underway on an airport rail link.

Under the plan, a new major train hub will be built at Sunshine linking the city to the airport and new dedicated train tracks to Ballarat and Geelong would allow for high-speed trains.

The Government said the plan would not just be "an expensive funnel for tourists and businesspeople between the CBD and airport", but also help untangle the regional and metropolitan networks.

The State Government is spending $10 million to devise an airport rail plan. ( Melbourne Airport )

"Imagine travelling from Geelong to Melbourne in under 40 minutes," Mr Andrews said.

"It would change the way people work and live. And it would change the face of our state forever."

The plan would also see metropolitan lines to Wyndham Vale and Melton electrified to deliver more services to the booming outer suburbs.

Mass public transport to Melbourne airport 'critical'

Part of the pitch is to create a pipeline of infrastructure that is not linked to the four-year election cycle, Public Transport Minister Jacinta Allan said.

"What we know is this concept can work. We've now got to do the planning to look at how, from a construction point of view, we can deliver it," she said.

Ms Allan said "billions of dollars" of investment would be involved.

"This is about making the most of the investment in a big bit of infrastructure, like an airport rail link, that also gives us the opportunity to also look at how we can connect the regions with high speed rail," she said.

The Government has tasked the Victorian coordinator-general to begin planning.

Melbourne Airport's Lorie Argus said a mass public transport solution for the airport was very important.

"If you consider [at] Melbourne Airport today we have 35 million passengers travelling through. That forecast is set to grow to 60 million passengers by 2033," she said.

"So mass transit solutions for us are critical."

This year's federal budget included money towards planning for an airport rail link.

The Napthine government had promised to build the link as part of its metro rail project but lost the 2014 election.

The current Labor Government has resisted calls to build the project now, saying the current Metro Rail Project was needed first to boost network capacity.

Infrastructure Victoria said an airport rail link was needed in 15-30 years.

Further details will be released next year.