Enhancing Your Yacht with Solar Power

Solar Energy

Harnessing solar energy for your yacht not only promotes sustainability but also enhances autonomy at sea. Whether you’re looking to power your daily appliances or extend your time offshore, installing solar panels is a worthwhile upgrade. This article will explore the various components involved, from choosing the right type of batteries to the installation of solar panels and integrating them into your yacht’s existing system.

Choosing the right type of battery: AGM vs. Lithium

Before adding solar panels, it's essential to consider your yacht's battery capacity. AGM (Absorbed Glass Mat) batteries are known for their durability and lower cost but are heavier and have a lower depth of discharge compared to lithium batteries. AGM batteries are robust, maintenance-free, and relatively affordable, making them a good option for yachts with modest energy needs. However, they are heavier and less efficient than lithium batteries, which offer several advantages despite their higher cost.

Lithium batteries, while more expensive, provide longer lifespans, higher efficiency, and significant weight savings—ideal for marine applications where space and weight are at a premium. Lithium batteries can handle deeper discharges, meaning they can use more of their capacity without being damaged, providing a more reliable and long-lasting power source for your yacht’s systems. As dealers of Mastervolt, MG Energy, Relion, and Victron, we provide top-tier solutions tailored to your specific maritime energy needs

Solar Panels: Flexible vs. Rigid


Solar panels come in two main types: flexible and rigid. 

​Flexible panels are lightweight and can conform to the shape of your yacht’s deck, roof or Bimini top making them less intrusive. They are perfect for curved surfaces but generally have lower efficiency compared to rigid panels. Flexible panels are advantageous for their ease of installation and minimal impact on the yacht's aesthetics. However, their lower efficiency means that more surface area is needed to achieve the same power output as rigid panels.

Rigid panels, on the other hand, are more durable and offer higher efficiency. They are ideal for mounting on a dedicated solar arch where they can maximise exposure to sunlight. Rigid panels are more robust and capable of withstanding harsh marine environments, providing a consistent and reliable source of energy. 
Our partnerships with leading solar panel manufacturers, including Solara and SunPower, ensure that we equip your yacht with the most efficient and suitable solar technology available.

Mounting options: Solar Arch vs. Bimini top canvas


The choice between a solar arch and a Bimini top for mounting solar panels often comes down to your yacht’s layout and your energy needs. A solar arch is sturdy, can hold multiple panels, and is ideal for larger installations. It also serves as a platform for other equipment like antennas or lights, making it a multifunctional addition to your yacht. The stability provided by a solar arch ensures that the panels are securely mounted and optimally positioned for maximum sunlight exposure.
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A Bimini top, while less robust, offers a dual function of providing shade and generating power, ideal for smaller yachts or those with limited space. The Bimini top is versatile and can be folded or removed when not in use, offering flexibility in managing the yacht’s space and appearance. Both mounting options have their merits, and the choice largely depends on the specific requirements and constraints of your yacht.

Wiring considerations: Series vs. Parallel configurations

The wiring configuration of your solar panels significantly impacts system efficiency and reliability. In a series configuration, connecting panels increases the system voltage, making it suitable for smaller systems with minimal shading. Conversely, a parallel configuration increases the system current, making it ideal for larger systems where each panel operates independently, providing better resilience to shading. This setup requires more wiring and more charge controllers.

Charge controllers and inverters


To ensure your solar panels effectively charge your batteries, a charge controller is necessary. There are two main types: PWM (Pulse Width Modulation) and MPPT (Maximum Power Point Tracking). MPPT controllers are more efficient, especially in varying sunlight conditions.
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Inverters convert the DC power generated by the solar panels into AC power for your appliances. Pure sine wave inverters provide clean power suitable for sensitive electronics, while modified sine wave inverters are more affordable but less efficient for certain devices.

System integration and monitoring


Integrating your solar power system with your yacht’s existing electrical setup and using monitoring systems enhances convenience. While not crucial, these features ensure seamless operation with other power sources and provide real-time data on power generation, battery status, and energy consumption. Onboard displays and remote monitoring help optimise energy use and maintain system performance.

Professional installation and maintenance

For optimal performance and safety, professional installation is recommended. Regular maintenance ensures the longevity and reliability of your solar power system. Our installation process includes a detailed evaluation of your energy needs, custom configuration based on yacht specifications, and expert mounting by experienced technicians. Regular inspections, cleaning, and firmware updates for inverters and monitoring systems are essential to maintain the system's efficiency

Electrical Marine Services

With years of experience in the marine electrical industry, Electrical Marine Services is proud to be a dealer for renowned brands such as Mastervolt, Victron, MG Energy, Relion, Solara, and SunPower. Our expertise and partnerships enable us to provide the highest quality components and customised solutions for your yacht’s solar power needs.

For more information or to discuss your specific requirements, please Contact us for a consultation. Our team is dedicated to helping you enhance your yacht with reliable and efficient solar power solutions