The announcement comes just after the group secured AU$6 million ($4.6 million) from the Australian Renewable Energy Agencys (ARENA) competitive funding round for large-scale solar.
The company best known as one of the worlds largest wind turbine manufacturers plans to invest AU$45 million in the project.
It sped up its original development plan to qualify for ARENA funding, according to an emailed statement.
Construction is scheduled to begin in early 2017.
The White Rock PV array which will be built next to Goldwinds 175 MW White Rock wind farm, 18km west of the town of Glen Innes, near the Queensland border was cleared for development in June by the environmental authorities in the state of New South Wales.
The White Rock solar plant is expected to generate roughly 46GWh of electricity in its initial year of operation, or enough to cater to the needs of about 7,200 homes.