The creation of solar energy project aims to accelerate the use, and also launched its own currency. Its overall goal is to offer a cost-effective and environmentally friendly incentive for the production of salt energy. I think this project is abandoned and I do not trust the project. I went to the project site, and realized that it does not work, only the advertising screen. in addition, I have not seen a single platform at all where it would be possible to get detailed information about the project. There are not enough up-to-date social media accounts to get information. I came across complaints from some users when I was doing my research. The cost of the token rose too much at a time, and then fell and lost money, this is stated in the complaints. Looking at the token's chart, one can say with confidence in the accuracy of these statements. The SIERRA token is currently listed on only one exchange, moreover, it is not in circulation and has a low value. It also lacks leadership and transaction volume. It seems to me that the project is currently abandoned. Therefore, due to this reason, it is risky to invest in tokens.