When there’s extra wind or solar power on the grid in the Netherlands, some of it now goes to a new type of battery made from just three components: iron, air, and water. Called an iron-air battery, ...

Enphase Energy just launched a new off-grid system that lets homeowners power their homes without a utility connection – even for extended periods. The California-based Enphase says the off-grid setup ...

An iron-air battery that stores and releases energy through a reversible rusting process has become the first of its kind to connect with a public electricity grid. On 30 July, the Dutch start-up Ore ...