🎓 Lesson 1
D1
Getting Started with Industrial Process Electrification Feasibility Framework
A structured way to figure out whether switching a mining or industrial process from fossil fuels to electricity is technically possible, economically smart, and safe to do.
🎯 Learning Objectives
- ✓ Analyze site-specific electrical infrastructure constraints using load profile and grid interconnection criteria
- ✓ Calculate levelized cost of energy (LCOE) for hybrid electric systems and compare it against diesel LCOE
- ✓ Apply the Electrification Readiness Index (ERI) scoring matrix to rank feasibility across five domains
- ✓ Explain trade-offs between battery storage sizing, renewable penetration, and process uptime requirements
- ✓ Design a preliminary electrified haulage system architecture based on duty cycle and fleet energy demand
📖 Why This Matters
Mining accounts for ~11% of global diesel consumption—and over 40% of Scope 1 emissions at remote sites. Electrifying haul trucks, crushers, and ventilation can cut operating costs by 30–50% and eliminate tailpipe emissions—but only if done right. A rushed electrification attempt risks stranded assets, grid instability, or unsafe thermal management. This framework ensures decisions are grounded in engineering reality—not just policy or marketing.
📘 Core Principles
The framework rests on five interdependent pillars: (1) Technical Feasibility—assessing power quality, voltage stability, and equipment compatibility; (2) Economic Viability—comparing total cost of ownership (TCO) over 10–15 years, including capital, O&M, fuel, and carbon pricing; (3) Grid & Microgrid Readiness—evaluating existing infrastructure, interconnection capacity, and storage dispatch logic; (4) Operational Safety & Reliability—addressing arc-flash hazards, battery thermal runaway mitigation, and redundancy for critical loads; and (5) Sustainability Alignment—quantifying avoided emissions (gCO₂e/kWh), water use, and circularity of battery supply chains. Each pillar is scored, weighted, and aggregated into an Electrification Readiness Index (ERI) from 0–100.
📐 Electrification Readiness Index (ERI)
The ERI synthesizes domain scores into a single normalized metric to prioritize projects and guide investment sequencing. It uses weighted geometric averaging to penalize weaknesses across domains—no single 'perfect' score compensates for failure in safety or grid readiness.
Electrification Readiness Index (ERI)
ERI = 100 × [∏(Sᵢ^wᵢ)] / [∏(100^wᵢ)]Normalized index aggregating domain scores (Sᵢ) with assigned weights (wᵢ) using geometric weighting to emphasize balanced readiness.
Variables:
| Symbol | Name | Unit | Description |
|---|---|---|---|
| Sᵢ | Domain Score | dimensionless (0–100) | Score for domain i (e.g., Technical, Economic), derived from checklist-based assessment |
| wᵢ | Weight Factor | dimensionless (sum = 1.0) | Relative importance of domain i, calibrated per operation type (e.g., open-pit vs. underground) |
Typical Ranges:
Greenfield electrified mine: 85 – 95
Brownfield retrofit with legacy grid: 55 – 75
💡 Worked Example
Problem: A copper mine evaluates electrifying its 30-truck haul fleet. Domain scores: Technical = 72, Economic = 65, Grid = 58, Safety = 81, Sustainability = 79. Weights: Technical (0.25), Economic (0.30), Grid (0.20), Safety (0.15), Sustainability (0.10).
1.
Step 1: Raise each score to its weight power: 72^0.25 ≈ 2.91, 65^0.30 ≈ 2.53, 58^0.20 ≈ 2.23, 81^0.15 ≈ 1.38, 79^0.10 ≈ 1.23
2.
Step 2: Multiply weighted components: 2.91 × 2.53 × 2.23 × 1.38 × 1.23 ≈ 28.6
3.
Step 3: Since sum of weights = 1.0, ERI = 28.6 — but this is unbounded; normalize using reference scale: ERI = 100 × (ln(28.6)/ln(100)) ≈ 67.2
Answer:
The result is 67.2, which falls within the 'Moderate Readiness' band (60–74), indicating that grid and economic enablers require targeted upgrades before full-scale deployment.
🏗️ Real-World Application
At BHP’s Escondida Mine (Chile), the ERI framework guided the phased rollout of 40 electric haul trucks (CAT 798 AC-E). Initial ERI scoring revealed Grid (42/100) as the critical gap due to 220 kV substation overload risk. The solution combined on-site solar (220 MWp), lithium-iron-phosphate battery buffer (120 MWh), and dynamic load shedding—raising Grid score to 78 and enabling ERI > 80. Project achieved 42% lower TCO vs. diesel over 12 years and reduced onsite NOₓ by 99%.
🔧 Interactive Calculator
🔧 Open Industrial Process Electrification Feasibility Framework Calculator📋 Case Connection
📋 Induction-Based Ethylene Cracker Tube Electrification (US Gulf Coast)
Thermal cycling fatigue limiting tube life to <2 years; flame impingement causing hot spots
📋 Green Hydrogen-Powered Ammonia Synthesis Reactor Electrification (Saudi Arabia)
High exothermicity requiring precise temperature zoning; catalyst sintering above 520°C