VFlowTech raises $20.5M for vanadium redox flow batteries
Singapore-based VFlowTech collected capital led by Granite Asia as part of regional climate tech momentum.
Singapore-based energy storage company VFlowTech secured $20.5 million in 2025, according to a regional report published by e27 [1]. The investment was led by Granite Asia [1].
VFlowTech was founded in 2018 by Avishek Kumar and Arjun Bhattarai [1]. The venture manufactures vanadium redox flow batteries, a technology often positioned as an alternative to lithium-ion systems. These units are specifically designed for long-duration energy storage installations, which are increasingly sought after by grid operators looking to manage the variability inherent in renewable energy sources [1]. Backers supporting the enterprise alongside Granite Asia include venture firms Wavemaker and Real Tech Holdings [1].
The funding was detailed within a sector study spotlighting 30 climate tech companies operating across Southeast Asia [1]. The compilation also referenced peer financing developments across the ecosystem, including MediSun Energy, which completed an $8.75 million seed round at a valuation of $44 million [1]. Both businesses were surveyed among companies establishing industrial hardware across the region [1].
No specific allocation details or round stages were disclosed in the publication [1].
Questions and answers
How much capital did VFlowTech raise?
VFlowTech raised $20.5 million in 2025, according to reporting by e27.
Who led the financing for VFlowTech?
Granite Asia served as the lead investor for the transaction.
What technology does VFlowTech produce?
The company produces vanadium redox flow batteries built for stationary, long-duration energy storage.
Companies & investors in this story
Sources
- 1.Thirty climate tech startups in Southeast Asia that would rather build than pledge — e27, Oct 26, 2026
