Market data, financing, revenue models and LDES investment analysis
Rongke Storage is moving into Australia to build a local vanadium flow battery ecosystem, while the 300 MW / 1200 MWh Yongren project in Yunnan nears grid connection and Western Australia advances a 50 MW / 500 MWh flow tender.
Anhui's draft capacity mechanism would scale payments by discharge duration, potentially improving revenue for four-to-six-hour flow battery projects.
A 2.1 GWh vanadium flow battery project under construction in Europe and Blackridge Research’s 2026 top 10 supplier ranking show flow batteries moving deeper into long-duration storage deployments.
Anhui has proposed tying capacity payments for grid-side independent energy storage to discharge duration, using a 165 yuan/kW-year baseline and a duration-divided-by-six-hours formula that could improve revenue for 4–6 hour flow storage projects.
A UK government fund led a £25 million equity raise for Invinity Energy Systems, while Australian Vanadium advanced an electrolyte leasing model, reported A$12.4 million in cash and continued bidding for the Kalgoorlie VBESS project.
UK vanadium flow battery maker Invinity Energy Systems has closed a £25 million equity financing led by a British government fund, one of the sector's larger single raises this year.
VFT's US$20.5 million raise and Delectrik's multi-MWh product launch and Saudi licensing deal show two different routes flow battery developers are using to move from lab technology to commercial deployment.
Mordor Intelligence projects above-4-hour battery systems in the data center storage market to grow at an 18.02% CAGR through 2032, while sub-1-hour systems still held 58.19% of 2026 revenue share.
Asia-Pacific is forecast to grow at a 14.6% CAGR through 2032, the fastest of any LDES region, as China builds gigawatt-scale pumped hydro and a domestic vanadium flow battery supply chain while Japan forecasts a tenfold jump in annual deployments.
Mordor Intelligence puts the global long-duration energy storage market at USD 5.66 billion in 2026, rising to USD 12.33 billion by 2032 at a 13.18% CAGR, with mechanical storage and 10-24 hour systems dominating today's mix.
Vanadium from Largo's Maracás Menchen mine in Bahia is being positioned as a key input for vanadium flow batteries, as Brazil's data centre market is forecast to double by 2030 and US storage demand grows.
The UK's state-owned National Wealth Fund has taken a cornerstone position in vanadium flow battery maker Invinity Energy Systems' £25 million fundraise, announced on 22 October 2026.