Diesel Generator Size Guide: How to Calculate the Right Capacity Selecting the correct Diesel Generator size is critical for ensuring reliable power and cost - efficient operation in Dubai’s commercial and industrial environments. An undersized generator risks overload and downtime, while an oversized unit leads to unnecessary fuel consumption and higher oper ating costs. This guide explains how UAE businesses can calculate the right diesel generator capacity. Step 1: Identify Your Total Load Begin by listing all equipment that must operate during a power outage. This may include lighting, HVAC systems, machi nery, IT infrastructure, and safety systems. Each device has a rated power requirement, typically measured in kilowatts (kW). Adding these values provides your total running load. Step 2: Account for Starting Power Some equipment, such as motors and comp ressors, requires higher power at startup. This surge load must be included when sizing a diesel generator. Ignoring starting power is a common mistake that can lead to generator failure under load. Step 3: Convert kW to kVA Diesel generator capacity is usually rated in kilovolt - amperes (kVA). To convert kW to kVA, divide the total kW by the power factor, typically 0.8 for most applications. kVA = kW ÷ 0.8 This calculation ensures your diesel generator can handle the actual electrical demand. Step 4: Add a Safety Margin In Dubai’s high - temperature conditions, generators may experience reduced performance. Adding a safety margin of 20 – 25% allows for future expansion and ensures stable operation under peak demand. Step 5: Consider Application Type Determine whether the diesel generator will be used for standby, prime, or continuous power. Standby generators support short - term outages, while prime and continuous units are designed for extended operation. Selecting the right duty type ensures optimal performance and compliance. Professional Assessment Matters Accurate sizing requires technical expertise. As the master distributor of Kirloskar Generators in the UAE , MYSPAN Power Solutions provides professional load assessments, ensuring each diesel ge nerator is precisely matched to business requirements in Dubai. Conclusion Correct diesel generator sizing is essential for efficiency, reliability, and cost control. By carefully calculating load requirements and working with an experienced supplier, UA E businesses can ensure uninterrupted power and long - term operational confidence. For expert guidance on diesel generator selection in Dubai, MYSPAN Power Solutions is your trusted partner.