Signal
6 articles covering "grid storage"
Invinity Energy Systems has delivered 90 vanadium flow batteries to the Copwood VFB Energy Hub in East Sussex, forming Europe's largest such installation at 20.7 MWh, backed by UK government funding.
A team at the Institute of Metal Research engineered a new iron-complex electrolyte that ran 6,000 cycles at 80 mA per square centimeter with no capacity decay and a 99.4 percent average coulombic efficiency, opening a possible low-cost route to long-duration grid storage.
The three-year agreement, equal to half of CATL's 2025 storage shipments, signals that sodium-ion has cleared its mass-production hurdles and is moving from pilot projects to grid-scale deployment.
Chinese battery makers are racing to add stationary-storage capacity while Beijing phases out export rebates, a shift that could tighten margins abroad and deepen domestic grid-storage demand.
The MIT spinout plans to demonstrate a 1 MWh thermal battery in Bedford, Massachusetts this year, using graphite bricks heated to 2,400 degrees Celsius and liquid tin to deliver grid-scale storage at a claimed $25 per kilowatt-hour, a fraction of lithium-ion costs.
Peak Energy and RWE Americas have deployed the first sodium-ion battery system on the MISO grid in Wisconsin, marking a milestone for the cheaper, cobalt-free chemistry in the US.