In a groundbreaking move that could reshape the renewable energy landscape, Indian deep-tech startup Offgrid Energy Labs has secured $15 million in Series A funding to revolutionize battery storage technology. This significant investment comes as global markets seek alternatives to lithium-based systems amid supply chain constraints and sustainability concerns.
Redefining Battery Storage Technology
Offgrid Energy Labs has developed ZincGel, a proprietary zinc-bromine-based battery system that challenges conventional lithium-ion technology. This innovative approach to battery storage delivers 80-90% of the energy efficiency of lithium batteries but at a significantly lower levelized cost. The technology addresses critical limitations of lithium, including volatile supply chains and shorter lifespans.
Addressing Global Energy Storage Challenges
The global push for renewable energy expansion has created unprecedented demand for efficient battery storage solutions. India specifically aims to increase its non-fossil energy capacity from 50 gigawatts to 500 gigawatts by 2030. Additionally, the country targets 236 gigawatt-hours of battery energy storage capacity by 2031-32. However, China’s dominance over the lithium supply chain presents a major challenge for many nations.
Offgrid’s technology offers three key advantages:
- Enhanced safety with water-based electrolyte and low fire risk
- Longer lifespan – twice that of typical lithium-ion batteries
- Superior performance in extreme temperatures (down to -10°C)
Strategic Expansion and Manufacturing Plans
The startup plans to build a 10-megawatt-hour demonstration facility in the UK by Q1 2026. This facility will feature a carbon footprint 50% lower than typical lithium battery gigafactories. The choice of the UK location leverages Europe’s strong battery manufacturing ecosystem while maintaining India as a key target market for future commercialization.
Technical Innovation and Competitive Edge
ZincGel technology utilizes zinc-bromide chemistry with a proprietary water-based electrolyte, eliminating fire risks associated with lithium batteries. The system can handle longer discharges (6-12 hours) multiple times throughout its lifetime and employs a carbon-based cathode for both fast charging and discharging. Furthermore, the technology reduces dependency on graphite, lowering production costs significantly.
Market Applications and Industry Partnerships
Offgrid targets industries with net-zero goals seeking to maximize renewable energy integration. Applications include peak shifting and decentralized, off-grid energy solutions. Early testers include Shell and Tata Power, with ongoing discussions with Europe’s Enel Group for customized battery solutions. The startup has secured over 25 IP families across major markets including the US, UK, India, China, Australia, and Japan.
Funding and Strategic Alignment
The $15 million Series A round was led by Archean Chemicals, a specialty chemicals manufacturer that now holds a 21% stake in Offgrid. This partnership provides strategic advantages in bromine manufacturing and supply chain management. The startup’s post-money valuation reaches approximately $58 million, reflecting strong investor confidence in alternative battery storage solutions.
Future Outlook and Commercialization Timeline
Offgrid Energy Labs plans to begin commercializing ZincGel technology in late 2026, following the UK demonstration facility completion. The next phase involves establishing a gigafactory in India to scale production. The startup’s approach focuses on making alternative battery storage financially viable while addressing market gaps in stationary storage applications.
Frequently Asked Questions
What makes zinc-bromine batteries better than lithium-ion?
Zinc-bromine batteries offer enhanced safety, longer lifespan, better performance in extreme temperatures, and reduced supply chain dependencies compared to lithium-ion systems.
When will Offgrid’s battery technology be commercially available?
Commercialization is expected to begin in late 2026 following the completion of their UK demonstration facility in Q1 2026.
How does ZincGel technology reduce costs?
The technology uses widely available materials, eliminates fire safety systems needed for lithium, reduces graphite dependency, and employs simpler manufacturing processes.
What industries will benefit most from this technology?
Industries with net-zero goals, renewable energy integrators, and applications requiring peak shifting or off-grid energy solutions will benefit significantly.
Why did Offgrid choose the UK for its first facility?
The UK offers a strong battery manufacturing ecosystem and existing infrastructure, while co-founders are already based there to oversee operations.
How does this technology support India’s renewable energy goals?
By providing cost-effective, domestically producible battery storage solutions that reduce dependence on imported lithium and support grid-scale renewable energy integration.
