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The program will bring solar power, batteries, diesel generators, advanced
Australian electricity gen-tailer EnergyAustralia is exploring the benefits of microgrid technology, teaming with property developer Villawood Properties to establish a solar PV-powered microgrid community in Melbourne''s north that could see residents reduce their power bills by more than 50%.
The Solstice precinct microgrid will include rooftop arrays on 36 townhouses.
EnergyAustralia has revealed plans to develop a 210 kW rooftop solar PV project coupled with a centralised 100 kW/270 kWh battery energy storage system as part of the Rathdowne residential housing estate being developed by Villawood Properties in the Melbourne suburb of Wollert.
The Solstice precinct will form part of the 1,100-home Rathdowne estate. It will comprise 36 townhouses and a large residents'' club which will store and share power generated by solar PV systems installed on their rooftops.
The solar PV infrastructure will be supported by a 100 kW/ 270 kWh battery energy storage system (BESS) located at the residents'' club.
EnergyAustralia said the solar+storage system will be managed by an intelligent microgrid platform that controls the energy flow across the precinct. Any excess renewable energy generated within the microgrid that is not consumed by the townhouses will be fed back into the National Electricity Market (NEM).
Villawood Properties executive director Rory Costelloe said the microgrid, which has been endorsed by the Victorian government''s Department of Environment, Land, Water and Planning, has the potential to cut annual power bills in half.
The savings estimates are based on a Solstice townhouse fitted with a 4 kW solar PV system generating 5.3 MWh of renewable energy each year coupled with battery storage, compared to a typical three-bedroom townhouse without solar consuming 6 MWh per annum.
"The microgrid, combining individual solar PV systems and a centralised battery together with smart home capabilities, is a game-changer that will help residents use energy much more efficiently and lower their bills by up to 50%," Costelloe said.
EnergyAustralia chief customer officer Mark Brownfield said the project could provide a blueprint for low-cost, sustainable, residential energy.
"Our purpose at EnergyAustralia is to lead and accelerate the clean energy transformation for all, from small community projects to providing clean energy for the state," he said.
"That''s what''s so exciting about the Solstice precinct microgrid at Wollert — it demonstrates what can be done at a local level.
"The technology helps residents become self-sufficient, gives them control over their energy use, reduces their bills as well as their carbon emissions.
"We believe what we''re doing in Wollert is the start of more community energy solutions being rolled out across Australia."
EnergyAustralia, which has approximately 2.5 million customers in the NEM, owns and operates a multi-billion-dollar energy generation portfolio across Australia.
The gen-tailer has considerably broadened its generation sources in recent years, with investments in wind and solar totalling more than $3 billion and 1000 MW of capacity. Its portfolio includes power purchase agreements with Coleambally, Ross River, Manildra and Gannawarra solar farms.
In addition, the retailer has plans to replace the Yallourn coal-fired power station in Victoria''s Latrobe Valley with a four-hour 350 MW capacity big battery. The battery is expected to be delivered by 2026. EnergyAustralia already operates two utility-scale battery storage systems – the stand-alone Ballarat terminal station and co-located Gannawarra solar farm battery assets that represent combined storage of 80 MWh.
Construction of the Solstice precinct is expected to commence late in 2021 with the first residents to move in next year.
"Early next year we are hoping to have proven the power and financial benefits."
The Solstice microgrid project has secured the support of the state government''s Microgrid Demonstration Initiative which is designed to support the development and implementation of microgrid demonstration projects in Victoria.
More articles from David Carroll
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