Global Iron-Chromium (ICB) Flow Batteries Supply, Demand and Key Producers, 2026-2032

The global Iron-Chromium (ICB) Flow Batteries market size is expected to reach $ 429 million by 2032, rising at a market growth of 33.2% CAGR during the forecast period (2026-2032).

Iron-chromium Flow Batteries were pioneered and extensively researched by NASA in the 1970s and 1980s and by Mitsui in Japan. The FeCr flow battery is a redox flow battery (RFB). Energy is stored by using Fe2+ – Fe3+ and Cr2+ – Cr3+ redox couples. The active chemicals are always completely dissolved in the aqueous electrolyte. Like other true RFBs, the power and energy ratings of the FeCr system are independent of each other and can be optimized individually for each application.

Growing Need for Long-Duration Energy Storage

One of the main drivers for Iron-Chromium (ICB) flow batteries is the accelerating global shift toward long-duration energy storage (LDES) solutions. With renewable energy (wind and solar) penetration increasing sharply, grid operators worldwide face volatility and intermittency challenges.

While lithium-ion batteries dominate short-duration storage (1–4 hours), ICB flow batteries are designed for 6–12 hours or even longer discharge durations, filling critical gaps for overnight storage, renewable firming, and daily peak shaving.

Policy Support & Pilot Deployments

Governments in North America, Europe, and Asia-Pacific have identified flow battery technologies — including Iron-Chromium — as strategic LDES candidates alongside vanadium and zinc-iron flow systems.

The US Department of Energy (DOE) and California Energy Commission (CEC) continue to fund pilot-scale flow battery projects. While vanadium remains the more mature chemistry, ICB is emerging as a cost-effective alternative where vanadium supply or cost constraints exist.

In China, several provinces (Inner Mongolia, Gansu, Shandong) have explicitly included ICB demonstration projects in their “14th Five-Year” new energy storage roadmaps, positioning them as local supply chain alternatives to vanadium flow batteries (VRFB).

Technology Improvements & Cost Decline

Compared to VRFBs, Iron-Chromium flow batteries historically faced technical barriers like:

Higher cross-contamination between iron and chromium ions.

Limited electrode stability.

More complex electrolyte regeneration requirements.

This report studies the global Iron-Chromium (ICB) Flow Batteries production, demand, key manufacturers, and key regions.

This report is a detailed and comprehensive analysis of the world market for Iron-Chromium (ICB) Flow Batteries and provides market size (US$ million) and Year-over-Year (YoY) Growth, considering 2025 as the base year. This report explores demand trends and competition, as well as details the characteristics of Iron-Chromium (ICB) Flow Batteries that contribute to its increasing demand across many markets.

Highlights and key features of the study

Global Iron-Chromium (ICB) Flow Batteries total production and demand, 2021-2032, (M Wh)

Global Iron-Chromium (ICB) Flow Batteries total production value, 2021-2032, (USD Million)

Global Iron-Chromium (ICB) Flow Batteries production by region & country, production, value, CAGR, 2021-2032, (USD Million) & (M Wh), (based on production site)

Global Iron-Chromium (ICB) Flow Batteries consumption by region & country, CAGR, 2021-2032 & (M Wh)

U.S. VS China: Iron-Chromium (ICB) Flow Batteries domestic production, consumption, key domestic manufacturers and share

Global Iron-Chromium (ICB) Flow Batteries production by manufacturer, production, price, value and market share 2021-2026, (USD Million) & (M Wh)

Global Iron-Chromium (ICB) Flow Batteries production by Type, production, value, CAGR, 2021-2032, (USD Million) & (M Wh)

Global Iron-Chromium (ICB) Flow Batteries production by Application, production, value, CAGR, 2021-2032, (USD Million) & (M Wh)

This report profiles key players in the global Iron-Chromium (ICB) Flow Batteries market based on the following parameters - company overview, production, value, price, gross margin, product portfolio, geographical presence, and key developments. Key companies covered as a part of this study include Herui Power Investment, etc.

This report also provides key insights about market drivers, restraints, opportunities, new product launches or approvals.

Stakeholders would have ease in decision-making through various strategy matrices used in analyzing the World Iron-Chromium (ICB) Flow Batteries market

Detailed Segmentation:

Each section contains quantitative market data including market by value (US$ Millions), volume (production, consumption) & (M Wh) and average price (US$/KWh) by manufacturer, by Type, and by Application. Data is given for the years 2021-2032 by year with 2025 as the base year, 2026 as the estimate year, and 2027-2032 as the forecast year.

Global Iron-Chromium (ICB) Flow Batteries Market, By Region:
United States
China
Europe
Japan
South Korea
ASEAN
India
Rest of World

Global Iron-Chromium (ICB) Flow Batteries Market, Segmentation by Type:
4.5KW
30KW

Global Iron-Chromium (ICB) Flow Batteries Market, Segmentation by Application:
Energy Storage System
Public Utilities

Companies Profiled:
Herui Power Investment

Key Questions Answered:

1. How big is the global Iron-Chromium (ICB) Flow Batteries market?

2. What is the demand of the global Iron-Chromium (ICB) Flow Batteries market?

3. What is the year over year growth of the global Iron-Chromium (ICB) Flow Batteries market?

4. What is the production and production value of the global Iron-Chromium (ICB) Flow Batteries market?

5. Who are the key producers in the global Iron-Chromium (ICB) Flow Batteries market?

6. What are the growth factors driving the market demand? Show more