Google has invested about $1 billion in Form Energy to help launch its long-duration battery technology. This deal will let Google support the development of Form Energy’s 100-hour battery, which can store electricity much longer than regular lithium-ion batteries.
The investment reflects growing demand for energy storage solutions capable of bridging gaps in solar and wind generation, particularly during periods of low output.
Long-Duration Storage at the Core
TechCrunch says Form Energy’s iron-air battery can provide power for up to 100 hours, which is much longer than most grid batteries that usually last only a few hours.
Tech in Asia noted that this capability allows the technology to address one of renewable energy’s biggest challenges: intermittency. The publication reported that the battery’s extended duration makes it suitable for maintaining grid stability during prolonged periods when renewable generation is limited.
Supporting Clean Energy Goals
The deal aligns with Google’s broader efforts to transition toward carbon-free energy operations. Long-duration storage solutions like Form Energy’s batteries could play a key role in helping data centers operate on renewable energy even when solar or wind output fluctuates.
The investment supports the company’s objective of maintaining reliable power while expanding its clean energy infrastructure.
Technology Built for Scale
Unlike lithium-ion batteries, Form Energy’s iron-air system relies on abundant materials, which may enable cost-effective scaling for grid-level storage. The battery’s design allows it to store energy for multiple days, making it suitable for balancing supply and demand over extended periods.
Such systems could help utilities maintain consistent power availability even during prolonged renewable shortfalls.
Strategic Implications
The partnership underscores the increasing importance of energy storage in supporting large-scale renewable adoption. Investments in long-duration battery systems are becoming
Google’s funding will support deployment of the technology at scale, potentially accelerating the adoption of multi-day storage solutions.
Toward Multi-Day Energy Security
With renewable generation expanding globally, the ability to store power for longer periods is becoming increasingly important. Form Energy’s 100-hour battery represents an effort to extend storage duration beyond current limits, enabling energy systems to function reliably during extended disruptions in generation.
Google’s investment signals growing recognition that multi-day storage may play a central role in achieving stable, carbon-free energy systems.
