Another way to look at it: I don't remember the article saying anything about how big the batteries are, but let's take a guess they're about 80kwh, similar to

Another way to look at it: I don't remember the article saying anything about how big the batteries are, but let's take a guess they're about 80kwh, similar to a Tesla. Let's say the boat can easily add solar panels to collect an average of 200 watts for 10 hours a day. That's 2kwh per day, or enough to fully recharge the boat in 40 days. If you go boating once every two weeks, then that's a third of a full charge for free. Is that worth it? It depends. It seems like a nice feature to have, and it adds some additional weight and complexity to the boat, and increases the manufacturing cost somewhat. The hardest part might be explaining to customers that solar panels don't increase the range and they'll have to plug in to charge if they want to use the boat every day.