Whichever way you go with alternative-energy solutions for your boat, whether it’s all solar, solar plus wind, or solar, wind, and water, keep in mind that you’ll also need to integrate charge controllers and switching systems to maximize your power-generating setup. Also, you may be converting some of the power you generate and store in batteries to AC current via an inverter. The options in this arena are almost endless and a bit complex for the electrically challenged. If you fall into that category, I highly recommend that you consult with an experienced marine electrician. Done properly, an onboard alternative-energy system employing all of the things mentioned here can truly take you a long way away from a petro-based world.