Appendix 1 presents the methodology used to develop the data for the Vietnam Energy Transmission and Transport Technology Catalogue.
First, data are compiled from practical experience in Vietnam (where available) as well as relevant international sources, ensuring both representativeness and reliability. The technologies considered cover the full range of energy transport systems, including electricity transmission lines, cables, pipelines, transport vessels, conveyors, railways, and trucks, along with associated stations and auxiliary equipment used for conversion, regulation, or support of energy transport processes.
A core element of the methodology is the application of a standardized structure for describing each technology. Every technology is presented with mandatory components, including a concise description of operating principles, key system elements, inputs, outputs, and energy balance. The energy balance section captures all energy flows, including inputs, outputs, losses, and auxiliary energy requirements during operation.
In addition, the methodology requires an assessment of operational and system-level aspects, such as the advantages and disadvantages of each technology, comparisons with alternative options, spatial requirements (standardized as area per unit of capacity), and environmental characteristics. These environmental aspects include visual impact, noise, risk, and ecological footprint. This approach ensures that the evaluation reflects real-world deployment feasibility, rather than focusing solely on technical performance.
Each technology is also supplemented with information on research and development (R&D) status and examples of existing projects. Priority is given to examples from Vietnam, while international examples are used for technologies that are not yet widely deployed domestically. This helps illustrate both the maturity level of each technology and its potential applicability.
From a quantitative perspective, the methodology requires that each technology be accompanied by standardized technical and economic data tables. These include capital costs, operation and maintenance costs, technical lifetime, construction time, energy losses, and technology-specific performance parameters. The data are provided for key time horizons such as 2025, 2030, and 2050, reflecting the state of technologies at different stages of investment decision-making. In addition, the data tables include uncertainty ranges to represent the inherent variability and uncertainty in the projections.