Advanced Battery Energy Storage Solutions
for a Resilient Grid

An iron-air battery stores energy through the reversible electrochemical reaction between iron and oxygen. During discharge, iron oxidizes to rust and releases electrons; during charge, rust is reduced back to iron. Iron-air chemistry uses abundant, low-cost materials and is well suited for long-duration, stationary energy storage.

Long-duration energy storage refers to systems capable of discharging stored energy for four hours to multiple days. LDES is critical for renewable energy firming, grid reliability, and replacing fossil-fuel peaking plants. Iron-air batteries are a leading LDES technology for stationary applications.

Lithium-ion excels at short-duration, high-power applications but becomes economically inefficient for 4–24 hour grid storage. FeRON's iron-air chemistry uses abundant iron, non-flammable aqueous electrolytes, and is optimized for long-duration stationary storage at significantly lower cost per kWh over multi-hour discharge cycles.

FeRON is PROTEON ENERGY's hybrid energy storage platform combining iron-air batteries for long-duration energy delivery with supercapacitors for rapid power bursts. It is engineered for grid-scale energy storage, renewable integration, telecom backup, microgrids, and industrial backup across India.

Grid-scale energy storage supports renewable curtailment reduction, evening peak shifting, frequency regulation, black-start capability, telecom tower backup, industrial continuity, microgrid autonomy, and rural electrification. PROTEON ENERGY targets utility-scale and behind-the-meter deployments with FeRON.

Iron-air batteries use non-flammable, aqueous electrolytes and do not exhibit lithium-ion thermal runaway. This makes them inherently safer for utility yards, industrial campuses, telecom sites, and densely populated areas where fire risk is a critical concern.

Iron is among the most abundant elements on Earth and is widely available in India. Iron-air stacks use commodity materials and simple cell architecture, enabling lower capital costs than lithium-ion or vanadium flow batteries for applications requiring 100+ hours of cumulative discharge over a project lifetime.

FeRON stores excess solar and wind generation during high-production periods and discharges during evening peaks or low-generation windows. This renewable firming reduces curtailment, stabilizes grid frequency, and enables higher penetration of clean energy without fossil-fuel fallback.

PROTEON ENERGY develops iron-air battery systems with India-first supply chains, leveraging domestic iron resources and local manufacturing. This reduces import dependency, supports energy security, and aligns with India's clean energy infrastructure and decarbonization goals.

Yes. Iron-air long-duration storage is well suited for telecom backup battery systems, providing multi-hour to multi-day runtime without diesel generators. FeRON offers a sustainable, low-maintenance alternative for tower sites requiring reliable off-grid or weak-grid power.

FeRON is designed for 4–24 hour long-duration energy storage applications, with multi-day discharge capability for deep grid backup, rural microgrids, and industrial resilience. Duration scales with system configuration and deployment architecture.

PROTEON ENERGY advances battery innovation in India by commercializing iron-air LDES for utility-scale deployment. The company targets investors, utilities, renewable developers, policymakers, and industrial customers seeking credible, deep-tech alternatives to imported lithium-ion for stationary storage.

Metal-air batteries generate electricity by oxidizing a metal anode (such as iron, zinc, or aluminum) with oxygen from air. Iron-air variants prioritize energy density economics and safety for grid applications. PROTEON ENERGY specializes in iron-air energy storage through its FeRON platform.

Utilities, renewable developers, telecom operators, industrial customers, and investors can contact PROTEON ENERGY at officialmail@proti-onenergy.in to request the FeRON factsheet, discuss pilot deployments, or explore strategic partnerships for grid-scale energy storage in India.