2043 of electric shovels. Additional challenges included safety risks associated with installing poles and overhead electrical lines in geotechnically unstable areas, as well as recurrent damage to electrical infrastructure caused by evolving mining phases or proximity to blasting zones. In several cases, active mining phases had to be interrupted to allow electrical supply reconfiguration, directly impacting short‑term planning continuity. These issues were further exacerbated by limited on‑site inventory available to electrical maintenance teams, resulting in delays in infrastructure deployment such as poles and associated equipment. Moreover, electrical installations often exhibited shortened service life, as infrastructure was placed in areas later mined and therefore required premature removal and reinstallation, increasing both capital and operational expenditures. Overall, the lack of systematic integration between electrical supply design and long‑term mine planning was identified as a critical gap constraining operational efficiency and project value optimization. 2. OBJECTIVES AND SCOPE 2.1 Objectives The objective of this study is to establish technical criteria and guidelines for integrating electrical infrastructure into open pit mine design and planning, positioning power supply as an early planning variable, and improving alignment between the spatial positioning of electrical equipment and infrastructure and the progressive deepening and evolution of the pit. 2.2 Scope This study was conducted at a single large-scale open pit cooper mine in southern Peru and considers a five-year planning horizon. At the time of the study, the mine was operating two active adjacent pits, each with two defined future cutback phases. Long-term mine plans considered the progressive integration of both pit into a single, larger open pit. The dynamic evolution of pit geometry, combined with the interaction between short, medium, and long-term planning horizons, makes this case representative of complex open pit operations where infrastructure integration plays a critical role. The scope of this study includes the evaluation of operational constraints associated with the location and progressive evolution of electrical infrastructure across different mining phases, as well as the identification of recurrent operational challenges related to trailing cable length, post‑blast re‑energization requirements, and the reconfiguration of electrical infrastructure. In addition, the study covers the development of technical guidelines for the strategic positioning of poles, overhead lines, and power supply points based on the projected spatial advance and deepening of the open pit. This study does not include detailed economic quantification of operational costs or financial benefits, nor advanced electrical system modelling such as detailed load-flow calculations or electrical simulations. However, qualitative impacts will be discussed later. 3. METHODOLOGY OR APPROACH The methodology is based on the following steps: 3.1 Baseline Assessment As a starting point, a baseline assessment was developed to understand the existing electrical power supply configuration for mining equipment and to evaluate how electrical infrastructure was integrated into the mine planning process.
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