HOME / australia large scale bess capital costs fall 20 year on year
The increase in energy consumption, driven by rapid electrification, data consumption and AI, coupled with Australia's supportive regulatory policies and record low renewable energy capital expenditures (capex) costs, have fuelled a competitive environment for quality BESS projects.
The largest BESS project reaching financial commitment for the quarter was in Wooreen, Victoria, with a storage capacity/ energy output of 350 MW/ 1.4 GWh, and duration of four hours, while South Australia had the largest share of financially committed storage projects in capacity (640 MW / 1.8 GWh).
The remaining BESS that secured financial commitment in the first quarter of 2025 include Copenhagen Infrastructure Partners' 240MW/960MWh Summerfield BESS, Intera Renewables' 250MW/500MWh Limestone Coast North Energy Park, and Amp Energy's 150MW/300MWh Bungama BESS (stage one), all located in South Australia.
The 2022 Integrated System Plan, released by the Australian Energy Market Operator (AEMO), highlights that the forecasted withdrawal of approximately “8 gigawatts (GW) of the current 23 GW of coal-fired generation capacity by 2030” will introduce complexities within the National Electricity Market (NEM).
The most important determinant of the installed cost of a BTM BESS is the overall scale of the system. By “scale”, I refer to the joint magnitude of the energy and power capacity, abstracted away from variation in discharge duration.
Thus, my preferred specification for predicting the installed cost of BTM BESS is as follows: (5) ln ( C i) = α t s + β 1 ln ( E i) + β 2 ln ( P i) + γ 1 ln ( E i) 2 + γ 2 ln ( P i) 2 + γ 3 ln ( E i) ln ( P i) + δ 1 A C i + δ 2 D C i + δ 3 ln ( w t c) + ɛ i
Visual inspection suggests that the Cobb–Douglas model underestimates the cost (i.e., generates a prediction with a positive residual) of BTM BESS with discharge durations less than one hour and more than three. Between one and three hours, the distribution of residuals is nearly identical and centered on zero.
Furthermore, TTS includes project-level data on 68,061 BTM BESS co-installed with solar PV. The preponderance of these observations (91.4%) are in California. Because the TTS dataset does not disaggregate BESS and PV costs, the upfront cost of BTM BESS present only in the TTS dataset cannot be modeled disjointly from the upfront cost of BTM PV.
According to China's National Energy Administration (NEA), by the end of 2024, the total installed capacity of new energy storage projects in China reached 73.76 million kilowatts, representing an increase of over 130 percent compared to the end of 2023.
The move is part of China's broader push toward a green, low-carbon energy transition as well as high-quality economic and social development. It builds on significant growth in the sector. As of the end of 2024, the country's installed capacity of new-type energy storage had reached 73.76 million kilowatts, according to official data.
BEIJING, Sept. 12 -- China on Friday unveiled an action plan to promote the development of new forms of energy storage between 2025 and 2027, amid efforts to support green energy transition and ensure the stability of new-type power systems.
New energy storage refers to energy-storage technologies other than conventional pump storage. An energy-storage system charges when wind power or photovoltaic power generates a large volume of electricity or when the power consumption is low, and it discharges otherwise. China's operational efficiency of new energy storage continues to improve.
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