Micro-LNG for Energy Security in Northern Peru: A Techno-Economic Framework Based on Mature Gas Fields

Francisco Huaytan Ponce J.; Juana Adaniya Higa B. · Proceedings of the LACCEI international Multi-conference for Engineering, Education and Technology (2026) · DOI: 10.18687/laccei2026.1.1.1741

Resumen

This study develops and evaluates a techno-economic framework for decentralized liquefied natural gas (LNG) supply aimed at strengthening energy security in northern Peru through the implementation of a micro-LNG plant under a Brownfield scheme integrated with existing gas infrastructure in the Paita area, Piura region. The methodology combines process simulation for the selection of small-scale liquefaction technologies, assessment of gas availability from nearby mature fields, and modeling of capital, operational, and storage costs. In addition, a financial evaluation based on discounted cash flow is performed using a weighted average cost of capital (WACC) adjusted for country risk and regulatory requirements related to strategic storage. The results indicate that the use of a mixed refrigerant liquefaction scheme, supplied with local gas from the Paita-Piura area, enables a technically feasible and financially attractive project, with a positive net present value and an internal rate of return above the project's WACC, while remaining competitive with centralized LNG supply from the Melchorita plant. Sensitivity analysis identifies LNG selling price as the main driver of profitability, allowing the definition of a feasible negotiation range between producers and industrial users. Furthermore, the incorporation of a strategic LNG storage system equivalent to 30 days of consumption, in compliance with current regulations, significantly enhances regional supply resilience and improves project performance under disruption scenarios. Overall, the results demonstrate that Brownfield micro-LNG projects supplied by mature gas fields constitute a scalable and replicable solution to decentralize supply, reduce vulnerability to logistical and social disruptions, and ensure reliable and cost-effective natural gas supply for energy-intensive sectors.

Instituciones: Universidad Nacional de Ingeniería