Towards Greener Tourism: Evaluation of the Energy Performance and Self-Sufficiency in a Modular Dwelling Across Spanish Territory

Repurposing shipping containers to construct modular buildings is an emerging trend that contributes to a more sustainable building sector. In the tourism sector, they enable low-impact, relocatable accommodation adaptable to diverse environments, reducing their ecological footprint. The feasibility of using this kind of structure for self-sufficient tourist accommodation has not yet been thoroughly explored. This work focuses on the case study of the Versatile Cabin, a modular building made from end-of-life shipping containers. It provides a comprehensive analysis of its thermal performance and the capability of maintaining comfortable indoor conditions without relying on the electricity grid. Using TRNSYS, the thermal demands of the dwelling are evaluated across 45 different Spanish locations, taking into account the climatic diversity of the country. Additionally, the study explores the integration of a photovoltaic system to supply power for the HVAC equipment, revealing potential for self-sufficiency, particularly in southern locations with lower heating demand. The results indicate that the PV system can meet between 88.5% and 99.9% of the dwelling’s electricity needs, with an average of 96.1%. Overall, the findings offer valuable insights into the thermal performance and self-sufficiency of modular buildings within the tourism sector, aligning with sustainable building practices and sustainable development goals.