Victorian homeowners will be paid nearly $5000 towards the cost of household solar batteries by a re-elected Andrews government in the latest move aimed at making the state Australia's leader in domestic-scale renewable energy.

The latest promise of subsidies for small-scale renewable energy will see households who already have solar panels able to claim half the cost – up to $4838 – of batteries that can store energy generated on their rooftops.

The announcement comes as the Andrews government commits to building six new renewable energy plants across regional Victoria, generating enough power for 640,000 homes.

The three solar and three wind farms, producing 928 megawatts of power, will be built by private companies.