battery

The China Energy Storage Alliance (CNESA) has released its 2024 rankings of Chinese energy storage companies, with CATL, Sungrow, and CRRC Zhuzhou Institute securing top positions across key segments.

Ukraine’s 200 MW/400 MWh battery project dwarfs most Eastern European installations, and is expected to come online in October 2025, ahead of the winter.

Superdielectrics launches the Faraday 2 battery, advancing a water-based, metal-free approach to home storage, from a UK-based facility.

In grids increasingly dominated by renewables, grid-forming technology is emerging as critical tool for maintaining stability and ensuring reliable power system operation. In this interview with ESS News, Rui Sun, Sungrow’s Deputy General Manager-Grid Technology Center, explains how grid-forming works, why it matters, and where the technology is already proving its value. He elaborates on technical challenges, regulatory gaps, and why grid-forming could soon become the new industry standard.

On June 26, the construction of the world’s largest power generation-side energy storage project in Ulan Chab, Inner Mongolia, officially began. This 1 GW/6 GWh project, using lithium iron phosphate (LFP) technology, aims to enhance grid stability and support China’s renewable energy transition.

Researchers in Hungary have developed a model to calculate the optimal PV and battery storage balance to support the European grid in the next few years. They found that the cost-optimal range is at 530–880 GW of PV, combined with battery storage equivalent to 2.5–7.5% of the total intermittent capacity.

Around one-quarter of all new rooftop PV systems installed in Spain in 2024 included battery storage, underscoring continual growth in distributed energy, despite a decline in total installed storage capacity.

A giant solar-plus-vanadium flow battery project in Xinjiang has completed construction, marking a milestone in China’s pursuit of long-duration, utility-scale energy storage.

French engineer André Buhart has published the plans and open-source software to create a DIY “solar energy router” to manage PV overproduction. Depending on the configuration, the device can direct excess photovoltaic energy to water heaters, pool motors, or underfloor heating, among others.

Scientists in Iran have developed a novel framework to optimize the capacity of PV and battery storage in smart homes, using a two-stage stochastic programming model. They considered the uncertainties in the grid, market price, and PV output, while also looking at different operation cases.