How do I choose a marine generator?


Choosing the right marine generator for your boat or yacht involves several considerations to ensure it meets your power needs and performs reliably in the marine environment. Here are some steps to help you make an informed decision:

Determine Your Power Requirements:

Start by listing all the electrical appliances and systems on your boat that will be powered by the generator. Consider essentials like lighting, navigation equipment, refrigeration, air conditioning, and entertainment systems.

Calculate the total wattage (or kilowatts) needed to power these devices simultaneously. Add a margin for future upgrades or additional equipment.

Fuel Type:

Marine generators are available in different fuel options, such as diesel, gasoline, or propane. Diesel generators are most common in marine applications due to their efficiency, reliability, and availability of fuel at marinas. Choose a fuel type that suits your vessel and preferences.

Size and Power Output:

Select a generator that provides enough power to meet your calculated electrical load. Marine generators typically range from a few kilowatts to tens of kilowatts in output capacity.

Consider the size and space available on your boat for installation. Ensure that the generator physically fits in your designated installation location.

Generator Type:

There are two main types of marine generators: AC generators and DC generators. AC generators produce alternating current, which is suitable for most boat systems. DC generators produce direct current and are less common. Ensure you choose the appropriate type for your boat's electrical system.

Brand and Reliability:

Research reputable marine generator manufacturers with a history of producing reliable products. Reading customer reviews and seeking recommendations from other boat owners can be helpful.

Noise and Vibration:

Consider the noise and vibration levels of the generator. Look for generators designed with sound insulation and vibration-damping features to minimize disturbances on board.

Environmental Factors:

Assess the generator's environmental impact, such as emissions and fuel consumption. Opt for models that meet or exceed emission regulations and are fuel-efficient.

Cooling System:

Choose between raw water-cooled and heat-exchanger-cooled generators. Raw water cooling is common in marine generators but requires regular maintenance to prevent corrosion. Heat-exchanger cooling uses a closed system, reducing the risk of corrosion.

Installation and Maintenance:

Ensure that you have the necessary space, ventilation, and access for installation and regular maintenance. Some generators may require more maintenance than others.


Determine your budget for purchasing, installing, and maintaining the marine generator. Keep in mind that quality and reliability are often reflected in the price.

Warranty and Support:

Look for generators with good warranty coverage and access to reliable customer support. A strong warranty can provide peace of mind and financial protection.


Ensure that the chosen generator complies with any applicable regulations and standards, including emissions and safety requirements.

Seek Professional Advice:

Consult with a marine electrician or a boat mechanic who has experience with marine generators. They can provide valuable insights and help with the installation process.

Ultimately, selecting the right marine generator involves a balance between your power needs, budget, and the specific requirements of your vessel. Taking the time to research and make an informed decision will lead to a more reliable and efficient power source for your boat or yacht.

We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies. Privacy Policy