Which Backup Power Option Fits Your Site?
Diesel generators, battery UPS, hydrogen fuel cells, hydrogen engines and Secure Power Units — compared side by side, with hydrogen in focus.
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Backup Power Options
Five Ways to Keep the Lights On
Each technology has its own cost, response time, runtime and emissions profile. Here is how they stack up.
Diesel Generators
Mature, low CAPEX, fast start — but noisy, polluting and fossil-fuel dependent.
Read more →Battery & UPS
Millisecond response, clean and silent — best for short-duration ride-through.
Read more →Hydrogen Fuel Cells
Zero-emission runtime, seconds to start, scalable with hydrogen storage.
Read more →
Market Context
Why Backup Power Is a Growing Market
$2.8B → $12.5B
Hydrogen standby generators · 2025→2034 · CAGR 18.9%
$3.8B → $10.4B
H2 fuel cell backup power · 2025→2034 · CAGR 11.8%
0.5–3 MW
Data center pilots: Equinix · Microsoft · INNIO
Source: Dataintelo: standby generator market · fuel cell backup power market
Hydrogen: Ready for Prime Time?
Fuel cells start in seconds, run as long as hydrogen lasts, and emit only water. The infrastructure is the main question — explore how hydrogen compares.
Compare Hydrogen vs. Diesel