Can You Combine Diesel Generators with Battery Storage?

Combining Diesel Generators with Battery Storage

Combining diesel generators with battery storage is a common approach in off-grid and remote power applications. This strategy allows you to leverage the strengths of each technology: the reliability and high power output of diesel generators, and the efficiency and flexibility of battery storage. By pairing a diesel generator with a battery bank, you can optimize your power system for peak shaving, load shifting, and grid backup.

Choosing the Right Battery Bank Size

When selecting a battery bank, consider the size of the system and the amount of energy you want to store. As a general rule, a diesel generator should be sized to provide 25-30% of the total system power, with the remaining 70-75% coming from the battery bank. For example, if you have a 10 kW diesel generator, you might choose a 100 kWh battery bank to store excess energy generated during the day for use at night.

Benefits of Hybrid Systems

Hybrid systems that combine diesel generators with battery storage offer several benefits, including improved efficiency, reduced fuel consumption, and increased reliability. By optimizing the use of your diesel generator and battery bank, you can minimize the number of generator startup cycles, which reduces wear and tear on the engine and extends its lifespan. Additionally, hybrid systems can provide a stable and reliable source of power, even during extended periods of low sunlight or high demand.