Due to the increasing energy consumption of the world, new alternative energy sources are needed. The alternative energy resources can be classified into three categories such as fossil fuels energy resources, renewable energy resources, and nuclear energy resources. Solar energy is a very commonly used renewable energy resource for generating electricity and heating water. In this paper, establishing a solar energy system is handled as an investment analysis problem whose parameters are defined under uncertainty. Therefore, neutrosophic sets as a mean of dealing with uncertainty have been preferred to capture this vagueness and impreciseness. Neutrosophic sets are one of the extensions of intuitionistic fuzzy sets, which use an indeterminacy function unlike the other extensions of fuzzy sets. This paper proposes a new neutrosophic investment analysis method by using interval-valued parameters to evaluate solar energy systems. In the application section, three different types of solar energy systems are evaluated by the proposed method. It is observed that the proposed method presents big flexibility to experts and it gives effective and efficient results.

由于世界上能源消耗的增加，需要新的替代能源。替代能源可分为三类，例如化石燃料能源，可再生能源和核能资源。太阳能是一种非常常用的可再生能源，用于发电和取水。在本文中，建立太阳能系统被视为投资分析问题，其参数在不确定性下定义。因此，为了解决这种模糊性和不精确性，人们首选以中智集作为处理不确定性的手段。中智集是直觉模糊集的扩展之一，与模糊集的其他扩展不同，直觉模糊集使用不确定函数。本文提出了一种新的中智投资分析方法，即使用区间值参数来评估太阳能系统。在应用部分，通过提出的方法评估了三种不同类型的太阳能系统。可以看出，该方法为专家们提供了很大的灵活性，并给出了有效而有效的结果。