Two big developments for India’s emerging long-duration energy storage (LDES) sector, with contracts awarded for pumped hydro energy storage (PHES) and the country’s first large-scale flow battery.

Gloucester Coa has received planning approval from the New South Wales government for the 3.6GWh Stratford Pumped Hydro and Solar project.

Australia’s CSIRO has revised pumped hydro storage costs upward in the final version of its annual GenCost electricity cost report.

The Queensland government has reportedly shelved the proposed AU$6 billion (US$4 billion) Mt Rawdon pumped hydro project, ending state support for a mine-repurposing scheme that had attracted AU$50 million in government funding.

The Czech Republic’s fourth pumped hydro energy storage plant is to be built within an existing hydropower complex, converting convention run-of-river into reversible units, creating 750MWh of energy storage capacity.

Global long-duration energy storage (LDES) deployment figures soared in 2025, but newer technologies risk being outcompeted by the incumbent, lithium-ion (Li-ion).

Recent developments from India’s emerging energy storage sector highlight a broadening of interest in diverse technologies and applications.

The NSW government has declared two pumped hydro projects totalling 22,000MWh of storage capacity as critical infrastructure.

Two pumped hydro energy storage (PHES) projects have been submitted for approval under Australia’s Environment Protection and Biodiversity Conservation (EPBC) Act.

Torrent Power has contracted Larsen & Toubro to construct a 3GW pumped hydro energy storage (PHES) plant in Maharashtra, India.