Energy Storage

Put solar in your hot water tank! Off-peak electricity rates are fast becoming an unhelpful price signal for rooftop solar owners, who benefit by self consuming their excess solar ahead of drawing electricity from the grid at any time of day.

Genex Power’s latest annual report makes inspiring reading, with its plans for repurposing of the Kidston Gold Mine into a renewable energy hub progressing through stages. Its Jemalong solar farm is also delivering to plan — what then of the write down?

The risks posed to renewable-energy projects by Australia’s uncertain climate change policies and hamstrung regulators, have become a concerning brake on investment. Adjusting settings to reduce those risks would revitalise investor sentiment and vastly reduce the cost of implementing the country’s switch to renewables, says the Clean Energy Investor Group.

China’s efforts to shift electricity generation from a coal-dominated system to a greener mix of renewables is not only centred on wind, solar and other technologies – the country is also rapidly pursuing energy storage. Vincent Shaw reports from Shanghai.

The South Australian Greens Party has proposed a tax-and-spend plan for the state that goes against everything the Federal Government advocates, in favour of massive funding of essential services and reducing carbon emissions in the process.

South Australia is a global hero for its demonstration of a rapid transition to renewable generation. But as renewables supplied more than 60% of the state’s electricity, and pushed out coal and even gas-fired generation, cracks appeared in the system strength and inertia required to keep the grid reliably running. ElectraNet has deployed old, clean-running technology — synchronous condensers — to smooth the gaps.

South Korean company LG Energy Solution has partnered with Australian fintech financier Humm Group and renewable energy retailer Diamond Energy to provide customers with Virtual Power Plant platform. Virtual power plants (VPPs) are gaining momentum in Australia as a way to decrease buyback time on home batteries and potentially add stabilisation services to the grid.

The manufacturer has launched sodium-ion products online. Production has begun and will be easily scalable, according to the CATL chairman. Researchers have been keen to make the technology work as it offers a cheaper, more environmentally friendly alternative to lithium-ion products.

The time is now for the energy consumer, says Anna Bruce, as energy “prosumers” produce, consume, and provide electricity and grid services in previously unimagined ways. Bruce, a senior lecturer at the University of New South Wales’ School of Solar Photovoltaic and Renewable Energy Engineering (SPREE), leads work on the role of distributed energy resources in the energy transition, analysing firsthand the dizzying level of complexity it brings.

The City of Melbourne is planning a network of co-ordinated community batteries to be installed at council sites across the city, aiming for a potential capacity of 5 MW by 2024.