A joint venture between French oil giant TotalEnergies and Paris-headquartered renewables producer Eren Groupe, has submitted plans for one of Australia’s largest solar and battery energy storage projects for review under the local Australian environmental process.
The $2.8 billion Wak Wak project proposed by TE H2, proposed for a 3,400-hectare site near Humpty Doo, about 48 kilometres south of Darwin, is to include a 2.7 GW solar farm that would “allow for an optimized, year-round energy supply to the potential electricity off-takers.”
In its application documents, TE H2 said the concept design also includes 6 GWh of battery energy storage to “firm up the renewable energy supplied and to balance solar power generation with electricity consumption at downstream facilities, provide local network stability services, and serve as a backup to ensure a secure facility shutdown when needed.”
TE H2 said while “the project is currently at concept design stage,” the objective of the proposal is to generate and store renewable solar energy for both existing industry in the greater Darwin region, and potentially, for the generation of renewable green hydrogen.
“The ultimate end use of the solar energy is as a critical input to produce firm renewables energy supply to existing industrial end users on Middle Arm initially and to power green hydrogen production at the Middle Arm Precinct at a later stage,” TE H2 said.
Known as an application under the Environment Protection and Biodiversity Conservation (EPBC) Act, the federal government-administered EPBC review process aims to protect nationally threatened species and ecological communities. EPBC referral documents say renewable energy generated at the Wak Wak facility will be sent via a planned high-voltage overhead transmission line to Middle Arm where TE H2 has the Darwin H2 Hub in development, and potentially connect into the Darwin Katherine grid.
TE H2’s proposed Darwin H2 Hub is to include a 1 GW electrolyser capable of producing more than 80,000 tonnes of green hydrogen per annum for national and international markets.
Construction of the Wak Wak solar and battery facility is expected to commence in 2027, pending project approvals. It is likely the solar farm will be developed in stages with the first phase expected to be in the vicinity of up to 900 MW.
TE H2 said power for construction will include a combination of temporary solar and battery storage on site, likely supplemented by diesel generators during the establishment and early works phase.
From pv magazine Australia.
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