The energy from the nature I have heard comes to know and it has been applied a lot in the world. But when I mention energy from heaven I think of Eloncity. This is a viable project, I think so because of its feasibility and it has a very popular development team !!!
The goal of the Eloncity project is to disperse the infrastructure. This is a difficult task, because letting people change their daily energy habits has been around for a long time. So other than transparency, other factors are very important for the project to succeed such as convenience, cost, long-term sustainability ..... Despite many challenges, but I still believe. Project will succeed in the future !!!
The Eloncity project is a scattering of infrastructure. So the dispersion of it is very high, in order to ensure the transaction is convenient for the project when entering into the following steps, I think the transaction processing system must anticipate a very large trading volume, Even so many fold times the current trading volume of coin now like BTC, ETH ..... This is a daunting task. However, I am very hopeful that Eloncity will have a radical solution to the project will soon succeed in the future !!!