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The 31-metre boat is covered by 537 m 2 [7] of solar panels rated at 93 kWp, [8] which in turn connect to two electric motors, one in each hull. [2] There are 8.5 tons of lithium-ion batteries in the ship's two hulls. [9] The boat's shape allows it to reach speeds of up to 10 knots (19 km/h). [1]
List of solar-powered boats is a list of boats powered by the sun, typically solar panels providing electrical power to motors. Aditya, India's First Solar Ferry, [2] 75 passenger boat is operating in Vaikom, Kerala, India. [3] [4] Alstersonne is a passenger ferry for 100 persons on the river Alster in Hamburg, Germany. As of year 2000 it was ...
A solar panel is a device that converts sunlight into electricity by using photovoltaic (PV) cells. PV cells are made of materials that produce excited electrons when exposed to light. These electrons flow through a circuit and produce direct current (DC) electricity, which can be used to power various devices or be stored in batteries.
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The use of electricity alone to power boats stagnated apart from their outboard use as trolling motors until the Duffy Electric Boat Company of California started mass-producing small electric craft in 1968. It was not until 1982 that the Electric Boat Association was formed and solar powered boats started to emerge. [16]
As 1 kW solar panels produce approximately 4 kWh of energy per day, factoring the system efficiency and standard sun of the location of 5.72 (averaged throughout the year). Hence the energy from solar panels is 80 kWh. The gap in energy is provided by lithium battery that can provide up to 40 kWh (80% discharge) from a total capacity of 50 kWh.
For example, a solar panel with 20% efficiency and an area of 1 m 2 produces 200 kWh/yr at Standard Test Conditions if exposed to the Standard Test Condition solar irradiance value of 1000 W/m 2 for 2.74 hours a day. Usually solar panels are exposed to sunlight for longer than this in a given day, but the solar irradiance is less than 1000 W/m ...
Increased panel efficiency due to cooling: the cooling effect of the water close to the PV panels leads to an energy gain that ranges from 5% to 15%. [6] [43] [44] [45] Natural cooling can be increased by a water layer on the PV modules or by submerging them, the so-called SP2 (Submerged Photovoltaic Solar Panel). [46]