Inlyte Energy announced its iron-sodium battery technology had achieved over 80% round-trip efficiency in third-party cycle testing of its battery, marking a significant breakthrough for long-duration energy storage.
The milestone positions Inlyte’s battery as a highly efficient, domestically sourced alternative to traditional lithium-ion systems for stationary battery storage.
Southern Company research and development is expected to deploy the first integrated system in Q4 2025, signifying an important step toward broader commercial adoption.
The results were independently validated by engineering and testing leader HORIBA MIRA; the technology’s performance was evaluated under realistic cycling and abuse scenarios. Results confirmed the battery’s performance, safety, durability, and simplicity.
The results build upon Inlyte’s iron-sodium cell-level performance findings, demonstrating stable performance of 90% efficiency and no capacity loss after more than 700 cycles. The new battery-level results demonstrate realized performance from integrating 100 iron-sodium cells and associated auxiliary control systems.
“We have a next-generation energy storage solution that we can manufacture domestically, with domestically sourced materials. This enables true energy independence, which has never been more important,” said Antonio Baclig, CEO of Inlyte Energy, in a statement.
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