Okay, let’s tackle this. So Lucas has a Master’s degree from Johns Hopkins, which is a reputable institution. He also has full professional proficiency in German, which is a valuable skill. Skills like photovoltaics, solar energy, and renewable energy are in demand, especially in the US. However, his rate is not in the top tier of professionals with similar skills. Considering his education and language skills, I would estimate his rate to be around $125 per hour, which is slightly below the average rate for a renewable energy expert with similar qualifications. This is because his rate is not as high as those of experienced professionals with more than 10 years of experience or those working in high-demand locations like California or New York.