The Energy Observer is a boat that is able to power its self-using solar panels, wind turbines, and a hydrogen fuel cell. Recently, the Energy Observer made a stop in London as part of a PR tour that began three years ago. One of the prominent organizations that has supported the Energy Observer is Toyota, which believes it can show how hydrogen-powered vehicles can be implemented.
The ship operates with many different power sources. One is a 126kWh battery that powers the motor and supplies power to the crew. However, when battery power is reduced to under 60% of its max, then hydrogen fuel cells are used to cover the rest of the power needs. Since the Energy Observer operates in the ocean, it can use the seawater as a power source.
Image Credit: Toyota