Battery storage

Renewables were the largest source of global energy supply growth in 2025, driven by solar energy which accounted for 72% of the increase. China set new records in solar and wind energy but is stockpiling fossil fuels, while U.S. emissions rose 3.2% and battery storage costs fell 45%. The Iran war accelerated efforts to reduce reliance on Gulf oil and gas.

A UH report recommends expanding solar energy and battery storage on Oʻahu instead of building new power plants. Economists argue this combination is the best option for the island's energy needs.

Nashville Electric Service is partnering with Seven States Power to install 100 megawatts of grid battery storage, funded by a $439 million USDA loan and grant. The project aims to stabilize Nashville's power grid during high-demand periods, reduce costly power purchases, and support 12,000 homes and businesses, with construction starting in 2027 and finishing in 2028.

Colombia opened a long-term auction to contract new wind, solar, and battery power with 15-year supply contracts starting in 2030. This is the first auction to include a dedicated category for battery storage.

More than half of the renewable energy projects required to meet the government’s clean power targets by 2030 have been offered grid connection dates by the National Energy System Operator (Neso). Over 700 projects, including wind, solar, battery storage, gas, and hydro plans, were granted connections after a two-year effort to resolve delays.

The Tumbleweed project in California’s Kern County became the first major U.S. battery installation capable of discharging power for up to eight hours, twice as long as typical energy-storage facilities. This advancement positions California closer to achieving 24/7 clean energy.

Pennsylvania lawmakers discussed expanding battery storage to stabilize the power grid and reduce electricity costs. A proposed bill (House Bill 2380) would require major utilities to install 3,000 megawatts of battery storage by 2033, with experts highlighting its benefits for energy efficiency and reliability. Industry representatives raised concerns about the legislation's policy implications.

Europe faces an energy challenge not due to lack of green power, but insufficient storage. Increasing battery storage could stabilize prices and reduce fossil fuel reliance, though obstacles persist.

Solar and wind energy generate significant power in Europe, but their intermittent nature creates challenges. Battery storage could stabilize prices and reduce reliance on fossil fuels, though obstacles remain.

Norway will provide €40 million ($46 million) through the EU’s Ukraine Investment Framework to bolster Ukraine's energy system before winter, focusing on decentralized power, renewables, battery storage, and local resilience amid Russian attacks.

Tesla has launched an all-in-one energy package that includes battery storage and solar panels for a reduced monthly cost of £199. This package aims to provide a comprehensive energy solution for customers. The offer is expected to make renewable energy more accessible and affordable.

A 1.4 GW battery storage system is being developed at the former Grohnde nuclear power plant in Germany, marking a significant shift in energy infrastructure. The project is highlighted in a Heise article and has garnered attention on Hacker News with 18 points and 4 comments.

The Energy Information Agency (EIA) reported that 2025 marked the first year of solar energy's global dominance, driven by increased production and outpacing carbon-free energy growth. Coupled with battery storage expansion and stable fossil fuel use, the EIA declared the world has entered the 'Age of Electricity,' with electricity demand growing twice as fast as overall energy demand.

CATL has opened a $440 million battery storage test site designed to simulate severe conditions. The facility aims to evaluate battery performance under extreme environments.