Solar seems to be pushing wind out of the market in the boating world. They stil make them but while I hear people asking and see solar installations all the time. I don't remember the last time someone asked about wind.
Go back 20 yrs and wind could outperform solar both in cost and output. Now, solar has largely caught up and with no moving parts, it's basically an install and forget it option.
Remember while they may start producing power at 5-10mph, it will be a negligible amount until you get above 15mph and the rated power won't come until you get up in the 20-25mph range.