Energy Storage

Saudi-owned renewable energy developer Fotowatio Renewable Ventures continues to build upon its Australian portfolio, commencing construction on a 5 MW solar-storage hybrid power plant near Dalby in southern Queensland.

Such a decision, which industry body the CPIA is adamant has already been announced, could make all the difference to investors struggling with a surge in equipment costs fuelled by the polysilicon shortage. The all-important National Energy Administration, however, has yet to confirm whether the CPIA’s interpretation is correct.

An international research team has designed a residential solar-plus-storage system based on gravity. The system was built with a solar power generator, a bulk booster charge controller, an inverter, a solenoid device, a deep cycle battery, a pulley block, a geared motor, a microcontroller, and wire ropes. Its creators said the system is ideal for regions with high solar radiation. They found that, due to its high electrical requirements, the system needs to rely on high-power solar modules with an output of over 500 W.

According to a new study from LUT University, domestic water heating costs may be reduced by combining rooftop PV with geothermal heat pumps. Scientists developed a control method to minimise these costs by taking advantage of cheap spot market electricity and maximised PV power generation, as well as considering heat demand, PV generation forecasts, and heat pump efficiency.

Scientists in Germany fabricated an all-manganese flow battery, which they say serves as a proof of concept for the potential of such devices. Their results working with various battery configurations show that cheap, abundant manganese has plenty of potential for flow battery applications; and is worthy of further investigation in the frame of developing sustainable energy storage technologies.

The smallest of the storage units has a capacity of 4.8 kWh and an output of 1.5 kW. It can be expanded to eight battery modules in steps of 2.4 kWh and has a maximum of 57.6 kWh, and 6 kW, of power.

The Queensland government has underscored its commitment to a clean energy future, announcing a $2 billion fund to be used to finance new renewable energy and storage projects, hydrogen production and clean energy resources projects.

Australia’s national science agency, the CSIRO, and the Australian Energy Market Operator have found even when factoring in additional ‘integration’ costs such as storage and new transmission infrastructure, solar and wind continue to be the cheapest sources of new-build electricity generation in Australia.

The Queensland government has today announced $22 million for detailed design and cost analysis for a new pumped hydro facility at Borumba Dam, west of the Sunshine Coast.

Australian technology company RayGen Resources has received funding to build a 3 MW/50 MWh ‘solar hydro’ power plant. Described by ARENA as the “first of a kind,” it is being lauded as one of the largest and lowest cost storage projects undertaken in the country. Energy giant AGL has also come onboard and will assess whether the technology would be suitable for its soon-to-retire Liddell facility.