XL Batteries has raised $7.5 million from Merrin Investors to accelerate commercialisation of its organic, non-flammable flow battery technology.
The funding will be used to scale operations, support pilot deployments, and strengthen domestic supply chains for long-duration energy storage (LDES).
The investment comes as grid infrastructure faces mounting pressure from data centres, electrification and industrial growth. XL’s Organic Flow Battery offers a scalable alternative to vanadium-based systems, using proprietary low-cost organic electrolytes that eliminate the need for corrosive materials and specialised infrastructure.
“This investment from Merrin Investors underscores that XL Batteries is built to thrive in today’s environment,” said Tom Sisto, co-founder and CEO of XL Batteries. “Over the past several months, XL has hit several key milestones that prove our technology is effective. Now, with Merrin’s support, we are bringing the next generation of safe, cost-effective, long-duration batteries to market at a pace to meet growing demand.”
The capital will support XL’s commercial-scale pilot with Stolthaven Terminals in Houston, Texas, and its strategic partnership with Prometheus Hyperscale for large-scale deployments at data centre campuses – marking a first for flow batteries in the US market. These projects aim to demonstrate the reliability and flexibility of XL’s flow battery technology in real-world applications.
Image: XL Batteries’ new funding from Merrin Investors will accelerate its ability to scale its flow battery operations, enhance grid resilience, and support energy independence by reducing reliance on foreign supply chains.
