The solar and battery industry in Australia has been on a wild ride, with demand swinging like a pendulum, riding the waves of government incentives. The latest twist in this tale is the sudden drop in battery installation rates, a phenomenon that has been dubbed the 'solar-coaster'. But what does this mean for the future of energy storage in Australia? Let's dive in and explore the implications.
The Solar-Coaster Ride
The solar-coaster is a term coined by Warwick Johnston, the managing director of solar consultancy SunWiz. It refers to the wild swings in demand for solar and battery systems, which are driven by government incentives. In this case, the 'coaster' refers to the sharp decline in installation rates after the federal government tightened the subsidy rules for the Cheaper Home Batteries Program. The program, announced in the run-up to the 2025 federal election, has been hugely popular, with almost 450,000 batteries installed so far.
The sudden drop in installation rates is a result of the government's decision to scale back the rebates on offer for bigger systems. This means that households and small businesses can no longer claim a subsidy worth 30% of the up-front cost of a system for systems larger than 50kWh. The result is a quiet period in the industry, with a sharp decline in installations in May and June.
The Economics of Energy Storage
The solar-coaster is not just a result of government policy, but also of the economics of energy storage. The industry had figured out that the economies of scale that apply to these batteries meant that once you got past a certain point, certain size, then the subsidy was funding a very large portion of the subsequent capacity of the battery. This meant that some people were buying systems that were simply too big for their needs, and others were not taking advantage of the subsidies available for smaller systems.
The Future of Energy Storage
Despite the drop in installations, the industry expects demand to remain steady in the coming months and years. Consumers are seeking greater independence from the grid, and batteries are becoming an essential part of the solar system. The falling prices of batteries and the rising cost of buying power from the grid are also driving the demand for energy storage. In my opinion, the solar-coaster is a temporary blip, and the future of energy storage in Australia looks bright.
The Role of Government
The federal government's handling of the battery scheme has been defended by Climate Change and Energy Minister Chris Bowen. He argues that the subsidy criteria were redesigned to ensure more people could get rebates that would allow them to buy a battery. The program will ultimately deliver about 40 gigawatt hours of battery capacity, enough to supply about two million homes for a full day.
The Way Forward
The solar-coaster is a reminder that the energy industry is a complex and dynamic landscape, with demand and supply constantly shifting. As the industry evolves, so too will the policies and incentives that drive it. In my opinion, the future of energy storage in Australia looks bright, with batteries playing a crucial role in the transition to a low-carbon economy. The solar-coaster may be a temporary blip, but the ride is far from over.
