Data center operators are stockpiling diesel generators as a backup power safeguard against rising grid outages. In 2023, the sector accounted for 22% of all industrial diesel generator sales, up from 15% in 2020, per a BloombergNEF report.
Regions like Europe and North America are driving growth due to aging infrastructure and extreme weather events. For example, Microsoft’s Dublin data center installed 16 MW of diesel backup power in 2024 after a storm caused a 6-hour blackout, costing $2 million in lost revenue.
Challenges:

• Emissions Regulations: The EU’s Stage V emissions standards are forcing manufacturers to redesign engines with selective catalytic reduction (SCR) systems.
• Sustainability Pressure: Critics argue diesel generators contradict net-zero goals, prompting hybrid solutions (e.g., diesel + solar/battery storage).
  Industry Response:
  Cummins Inc. launched the C2250D5A generator, which meets Tier 4 Final emissions rules while delivering 2,250 kVA of power.