The fourth monitoring visit of the LIFE DRY4GAS project took place the 27th of May 2021. The meeting, organized by CIEMAT as project coordinator, was celebrated virtually due to the COVID-19 crisis and was attended by representatives of all the partners currently participating in the project. At the meeting, the progress of the project during the last year was presented. Representatives of each of the partners gave presentations to assess the current development of tasks and deliverables, as well as the deadlines for their completion. It was highlighted that the Mid-term Report with the justification of all the expenses and the technical development of the project was delivered in June 2020, which was accepted by the European Commission. In addition, during the last year the prototype construction has been started, with the setting-up of the concrete slab and the warehouse, the building and installation of different parts of the solar dryer and the construction of the combustion chamber and the heat exchanger. The project is currently under development and is progressing satisfactorily.