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Energy verified Verified Outcome TRL 8

Multi-Day Iron-Air Battery Storage

domain Client: Utility handshake Provider: Form Energy schedule Deploy: 2023-Present
88 Impact
Enterprise Ready
Evidence Score: 4/10
Strength: Medium

Executive Summary

ANALYST: COI RESEARCH

Deployment of 'rust belt' batteries using iron, water, and air to store energy for 100 hours at 1/10th the cost of lithium-ion, enabling retirement of coal plants.

rate_review Analyst Verdict

"The holy grail of cheap storage. The chemistry (rusting and un-rusting iron) uses abundant, non-toxic materials. While heavy and slow (not for frequency response), it is perfect for replacing baseload coal capacity."

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Full Audit Report Available Includes Risk Register, Technical Specs & Compliance Data.

warning The Challenge

Retiring coal plants requires a reliable replacement that can last through multi-day weather slumps (e.g., a week of low wind). Lithium batteries are too expensive ($150/kWh) for 100-hour duration. The grid needs a 'capacity' battery, not just a 'power' battery.

psychology The Solution

Form Energy's battery works by reversible rusting. Discharging: iron converts to rust (releasing energy). Charging: rust converts back to iron (using energy). The cost target is <$20/kWh. The system is deployed as modular blocks on former coal plant sites, utilizing existing transmission interconnects.

settings_suggest Technical & Deployment Specs

Integrations
Grid Control
Deployment Model
PPA / Asset
Data Classification
Operational
Estimated TCO / ROI
Low (Capacity payment)
POC Summary ( to )

"N/A"

shield Risk Register & Mitigation

Risk Factor Severity Mitigation Strategy
Manufacturing Scale High West Virginia factory buildout.
Efficiency Medium Low RTE acceptable due to low CapEx.

trending_up Impact Trajectory

Audited value realization curve

100-hour discharge duration Verified Outcome
Primary KPICost target 1/10th of Lithium-Ion
Audit CyclePilot projects confirmed (MN, CO)

policy Compliance & Gov

  • Standards: Utility Regs
  • Maturity (TRL): 8
  • Evidence Score: 4/10
  • Data Class: Operational

folder_shared Verified Assets

description
Verified Case Study
PDF • Version 1
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Technical Audit
PDF • Audited
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Security Architecture

The "Blind Verification" Protocol

How we verified these outcomes for Utility without exposing sensitive IP or identities.

Private
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1. Raw Evidence

Audit ID: #PRIV-704
Evidence: Direct SQL Logs
Public
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2. Verified Asset

Outcome: Verified
Ref ID: #COI-704

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