The private sector would be asked to come up with plans to build a new power station in Victoria under a Liberal election pledge which the party says could save households up to $350 a year on their energy bills.

Key points: The Liberal Party says a gas-fired power station could be operational in as little as two years

The Liberal Party says a gas-fired power station could be operational in as little as two years An energy analyst says Victoria already has an adequate supply of power

An energy analyst says Victoria already has an adequate supply of power Labor is promising dedicated children's emergency departments at five hospitals

The Opposition has not said what kind of plant it would like built.

Opposition Leader Matthew Guy's plan would involve packaging-up power contracts from major energy users, like the state's hospitals, schools and transport systems, totalling about 500 megawatts and putting a 10-year contract out to tender to supply those needs.

"We'll go to market and we'll assess a range of concerns as to what we will choose to be the successful bid both in speed, in cost, in environmental concerns," Mr Guy told reporters during a campaign stop at a restaurant in Mitcham, in Melbourne's east.

"We'll wait for the market to come back with a winning option.

"We expect that might be a mix of generation. It might be gas mixed with solar but it could be a range."

The Andrews Government has legislated a renewable energy target requiring 25 per cent of the state's electricity to come from renewable sources by 2020, rising to 40 per cent by 2025.

Labor is promising to increase the target to 50 per cent by 2030 if it wins the November 24 election.

Earlier this year it announced it had signed contracts with six solar and wind farms which would produce 928 megawatts of power by 2020, enough to power 640,000 homes.

New power station could be running in 'a couple of years'

Opposition energy spokesman David Southwick said a gas-fired power station could be brought online in as little as two years.

"We believe we can get a new power station into the market within a couple of years, certainly in time to ensure that we don't see the effect that Daniel Andrews is having on our power prices right now," he said.

Mr Southwick said Labor's renewable energy target plan would mean the Yallourn power station would probably have to close earlier than expected, possibly within two years, further limiting supply and forcing prices up.

"If we think we've had a nightmare before, wait until you see what Victorians are going to expect under Daniel Andrews with Yallourn power station coming off as well," Mr Southwick said.

"Our plan is to ensure Yallourn stays in the game until its expected closure in 2032 [and] a new power station into the market as well, bringing more supply more competition and ultimately bringing down prices for all Victorians."

The Latrobe Valley generator must give the State Government five years' warning before closing.

The director of the energy program at the Grattan Institute, Tony Wood said Victoria currently had an adequate supply of energy.

Mr Wood said pressure would be placed on Yallourn only once more supply came into the market, which would drive down prices, but that was not yet happening.

Junior Coalition partners the Nationals want the development of a high-efficiency, low-emissions coal plant, a position it announced last year.

On Friday, Mr Guy said he accepted that in the long term Victoria needed to move away from coal generation.

Mr Guy said the plant could be a mix of power generation, such as gas-fired or solar power. ( ABC News )

Policy 'written by fossil fuel industry'

Asked about the Coalition plan while campaigning at the Monash Children's Hospital on Monday, Mr Andrews pointed to Labor's $1.24 billion plan to provide half-price solar panels with no upfront costs to households.

"I think there'll be a very stark choice on the 24th of November," he said.

"A power station on your roof, through solar panels with no upfront costs from Labor, or big cheques to greedy energy companies put forward by others."

The Liberal plan is based on economic modelling from Frontier Economics.

Mr Southwick said no taxpayer money would be spent on running or building the power station, saying it would be a "competitive bid and the lowest price wins".

"We're not dictating the source, we're not dictating it's going to be renewables only," he said.

"What we're going to do is to ensure we get the best solution for all Victorians."

The idea has been slammed by Environment Victoria as a "dirty, dead-end policy".

"This policy reads as though it's been written by the fossil fuel industry," said Mark Wakeham, CEO of Environment Victoria.

"Building a new gas or coal-fired power station to run 24/7 even when we've got more than enough power from renewables is a dangerous, expensive response to a problem that doesn't exist.

"It drags us back into the past and away from a cheap, clean energy future."

Labor has promised to create children's emergency departments at five hospitals. ( ABC News: Stephanie Anderson )

Labor promises children's emergency departments

Meanwhile, Premier Daniel Andrews visited Monash Children's Hospital where he announced a $62.4 million commitment to create separate children's emergency departments at five Victorian hospitals.

Mr Andrews said if Labor was re-elected it would expand or reconfigure emergency departments at the Geelong, Maroondah, Frankston, Casey and Northern hospitals, so that children and families had a dedicated space.

"We will refit those spaces so there's a dedicated area for children, for mums and dads, so that they can be separated off and get the very best care," Mr Andrews said.

Health Minister Jill Hennessy said the changes would make children and their parents more comfortable while they waited for treatment and while they received treatment.

"What we think is really important is that we build our hospitals around the needs of our children, rather than making our children fit in with the needs of our hospitals," Ms Hennessy said.

Dedicated children's emergency departments already exist at the Monash Medical Centre, Sunshine, Shepparton and Ballarat hospitals.

Mr Andrews also promised to provide $4 million to neighbourhood houses and other community organisations to provide child car seat installation and checking services to families free of charge.

The Government would offer grants to organisations, which would engage professional installers to conduct fittings and checks.

"The safety of our littlest Victorians, the most precious cargo, is very, very important and this is just a commonsense next step," Mr Andrews said.