Can superyachts go electric?

Solar-powered electric yachts have hit the superyacht market. Silent Yachts and Sunreef Yachts are two companies working on developing this technology. Allied Market Research predicts the solar boat industry will grow 14% by 2031 to $2.4 billion. CNBC headed to the Cannes Yachting Festival to get an inside look at the companies building solar-powered electric yachts, and to explore the challenges the technology faces in playing a wider role in the future of maritime transportation.