Okay, let’s tackle this. So William Wysong has 12 years of experience in organic food and green energy ventures, which is a niche area. His skills in organic gardening, green building, and sustainability are in demand. Location is Nashville, Tennessee, which is a mid-sized city with a growing economy. Industry demand for sustainability experts is increasing, but the market is not overly competitive in this niche. Considering his experience and skills, I would estimate his hourly rate to be around $125, which is slightly below the average rate for sustainability experts in the US. However, this is a conservative estimate, and his actual rate could be higher depending on the specific job requirements and industry standards.