Electric Mobile Equipment KPIs and Definitions Guideline
Published: June 13,2024This white paper defines performance indicators for battery electric vehicle (BEV) adoption, covering:
- Battery Health Metrics: Charge cycles, state-of-charge (SoC), and state-of-health (SoH).
- Energy Consumption Optimization: Evaluating terrain impact, regenerative braking efficiency, and charging schedules.
- Fleet-Wide Data Integration: Standardizing real-time telemetry from onboard sensors, smart charging stations, and energy dispatch systems.
BACKGROUND
There has been an increased interest in BEVs, to help reduce emissions, resulting in the need for greater understanding of their differing operational characteristics, infrastructure needs, maintenance, and operating costs. These technologies are noticeably different compared to internal combustion-based equipment. Although there are advantages with electric mobile equipment, constraints cannot not be ignored, specifically when it comes to planning (operating conditions), mixed or hybrid fleet (battery electric vs internal combustion engine (ICE)), safety, maintenance (BEV powertrain, batteries, and charging infrastructures), and electrical energy management.
PURPOSE
The objective of this white paper is to suggest KPIs that can help mining companies integrate BEVs into their operations. The target audience of this white paper is mining operators who can benefit from the use of the KPIs; enabling improved decision-making and planning.
IN SCOPE
- Why KPIs should be considered
- KPIs for different uses
- Build the electrical energy demand based on long-term mine plan
- Progress at-face relative to a given shift
- Fleet size and fixed plant emulation (energy requirements) over the life of mine
- Replacement schedule, mixed fleet, and optimized dispatch
- Investment decisions and readiness planning
- KPIs for Introducing BEVs
- Understanding BEV impact on existing mines for decision-making and planning
- Environmental scanning (research and development, trials, and production status of critical BEV components like battery capacity)
- BEV operationalization and improvement
- Energy management, storage, supply, and demand
- Site/operation requirements for BEV usage (operational and maintenance restrictions) mine operation changes with electrification
- Operational Efficiency & Infrastructure
- Energy consumption, maintenance cost, and productivity
- Timeline and lead times
- Battery & Charging Considerations
- Questions to ask OEMs to maximize battery performance (i.e., minimum/maximum cell temperatures)
- Charger infrastructure and management (stationary and dynamic)
- Energy demand and storage (peak and average)
- Time between recharging
- Drawdown rate
OUT OF SCOPE
- Design of electric equipment
- Vendor-specific information
- Regulatory requirements and mine rescue
- Measurement of safety performance (i.e., fire risks, chemical risks, etc.)
- Battery chemistry selection
- Time-Usage Model (TUM)
- Training and skill development
- Environmental impact
- Economic factors (cost savings and return of investment)
- Efficiency ranking of energy transfer modes (e.g., dynamic charge downgrade, up-ramp assist, etc.)
- Application dictated time between charging
TABLE OF CONTENTS
Under development.
WHAT'S HAPPENING
April 16, 2025: Project proposal has been sent to the Working Group Steering Committee for project approval.
Project Steering Committee
Bismark Osei – Freeport-McMoRan
Michel Serres – Stream Systems Ltd.
Ron Bose – XPS-Glencore
Tim Joseph – JPI Mine Equipment & Engineering
Troy Charsley – Hatch
Get Involved
To get involved contact us at: gmgprojects@gmggroup.org