So far so good. The assembly was straight forward. The included flange was easily welded onto section of pipe to mount unit onto. The housing of the turbine is metal which I guess I wasn't expecting. Appears well made. Overall very pleased with the product. So here is a update. Have noticed an increased amount of battery charge in the mornings. Average of about a volt. I do live in a dependably breezy area. Very pleased. I will be getting another of these before adding more panels to our system. So update. Customer service is exllent was able to get some replacement blades.