Australia, with superior lighting conditions and a vast ground, has always been a key global photovoltaic market. According to data released by the renewable energy agency IRENA, Australia added 4.625GW of new photovoltaic installations in 2019, of which two-thirds of the new near-capacity was rooftop photovoltaics. It is understood that the household market in Australia this year may exceed that of last year.

In the first three quarters of 2020, Australia's monthly new rooftop photovoltaics exceeded last year's data. Although in April due to the first wave of the epidemic, the year-on-year decline was 10.7%. However, from January to September, the total rooftop photovoltaic system was close to 2GW. The fourth quarter is the traditional peak season. Under the premise that the epidemic does not worsen again, household use this year is likely to exceed 3GW. According to data from the Australian Clean Energy Regulatory Agency. About 29% of Australian households have installed photovoltaic systems on their roofs. In Queensland this proportion is as high as 42%.

The price of electricity for Australian residents remains high. Installing a rooftop photovoltaic (and energy storage system) can not only meet the daily electricity consumption, but also receive special subsidies from the local state government. This is the reason why rooftop photovoltaics have been hot. However, the current output limit of the 5 kWp capacity limit imposed by the Australian Grid on the inverter is becoming a shackle for the continuous development of this photovoltaic market. With the development of large-capacity household systems, the average residential system in Australia has reached about 6.6kW-the maximum power of a photovoltaic array that can be connected to a 5kW inverter (systems higher than this number will not receive government subsidies Or tax deduction). This means that the photovoltaic industry has been severely restricted in the promotion of larger household systems.

Australia's power grid system has undergone many tests in the past two years. Under extreme weather conditions such as typhoons and forest fires, power supply capacity is scarce, and large-scale power grids in South Australia have frequently been paralyzed. This has caused countless local losses. This can't help but make the state governments begin to turn their attention to the latest areas such as micro-grid systems, battery energy storage, and electric load management.

According to conservative calculations by Cornwall Insights, an Australian energy research organization. By 2030, the total capacity of small photovoltaic and distributed battery energy storage will reach 32GW. The installed capacity of the energy storage system will reach 7.4GW in the next ten years (assuming that each battery is at least 6kw). Take Southwest Wales and Victoria as examples. All gigawatt renewable energy plans include energy storage.

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