Grids & Integration

Major construction work on the first new electricity interconnector to be built between Australian states in 15 years has commenced with transmission company ElectraNet confirming work has begun on the South Australian section of the $2.3 billion Project EnergyConnect which will link power grids across three states, potentially unlocking gigawatts of renewable energy projects in its path.

Renewable energy investors have again shattered the New South Wales Government’s expectations with more than 80 clean energy projects representing more than $100 billion of potential investment registering for the Hunter-Central Coast Renewable Energy Zone.

The Victorian government will be expanding its Solar Homes rebate program into the world of Virtual Power Plants (VPPs), announcing on Tuesday that households who install a battery and sign up to the pilot before July 2022 will receive a rebate of over $4000.

Western Australia will today introduce new curtailment rules which will allow for all new and upgraded solar PV and battery energy storage installations with an inverter capacity of 5 kW or less to be remotely turned down or switched off in emergency situations.

The proposed 1.5 GW Marinus Link transmission project, which would link Tasmania and the Australian mainland via an undersea electricity interconnector, has reached another milestone with the launch of a new engineering survey which aims to identify the most suitable corridor for the cables.

After the deluge of announcements last year, 2022 will see the trickle of big batteries actually operating in Australia turn to a flood. According to Rystad Energy, the country’s battery capacity is set to double before the year is out.

Renewable energy investors’ appetite for large-scale development in Australia appears far from sated with the New South Wales Government revealing almost 50 new solar PV, wind and energy storage projects, totalling more than 34 GW, have been proposed for the South-West Renewable Energy Zone.

Conceived by scientists in China, the device combines an integrated carbon-based perovskite solar cell module with a rechargeable aqueous zinc metal cell. The proposed system achieved an overall efficiency of 6.4%, and a steady operation for more than 200 cycles with little performance degradation.

The uptake of EVs in the years ahead will add up to staggering battery capacity, mostly sitting idle on driveways. The two-way flow of electricity from EV batteries, known as vehicle to grid, could not only enable power systems to rely on intermittent renewables, but could also be the trump card for network operators to respond to grid disturbances. However, there are still a few catches to be worked out, as Marija Maisch explains.

Queensland company eleXsys Energy has secured more than $450,000 to help finance a trial of next-generation technology designed to manage grid stability in low voltage areas, potentially allowing for an increase in the amount of distributed energy resources, including rooftop solar, that can be connected to the grid.