Okay, let’s tackle this. So Adali Fadel has an impressive 58 years of experience in the energy sector, which is unusually long. Typically, engineers with such extensive experience can command higher rates. However, considering the industry and location (United States), I'll take a conservative approach. A general rule of thumb for engineers in the energy sector is $75-$150 per hour, depending on the level of experience and location. Given Adali's exceptional experience, I'll estimate a slightly higher rate, but still within the lower range, at $75 per hour.