Hydrogen advocates look to capitalize on California’s goal to replace diesel for back-up generation


California regulators are on the lookout for cleaner alternatives to replace the widespread use of back-up diesel generation – particularly among data centers in Silicon Valley and other areas of the state – and some industry players think hydrogen could be the answer. To learn more, read “Hydrogen advocates look to capitalize on California’s goal to replace diesel for back-up generation.”

Key Takeaways:

  • Hydrogen fuel cells are advantageous for several reasons: they occupy less space than batteries, possess long-term storage capability, are quiet, reliable, and 100% zero-emission.
  • The key draw of hydrogen is its cost effectiveness at longer durations.
    • For a completely resilient, 100% renewable data center with zero emissions, using hydrogen would translate to a levelized cost of electricity amounting to $119 per MWh.
    • Batteries would lead to over $4,000 per MWh levelized cost to ensure 48 hours of backup power.
  • Taking a step back from the issue of replacing diesel back-up generators, environmental advocates are urging the state to prioritize the adoption of renewable, zero emissions technologies.
  • Ben Schwartz, policy manager at Clean Coalition, said California could adopt policies to promote the efficiency of solar and storage alternatives to diesel generation.

Path to 100% Perspective:

Renewable fuels, such as hydrogen, can help utilities overcome the variability challenges posed by seasonal conditions and extreme weather. One approach that can be leveraged in the transition to a 100% renewable energy system is power-to-gas (PtG). PtG technology uses excess energy from wind and solar to produce synthetic hydrogen and methane. The combination of stored fuel potential and thermal capacity yields a long-term energy storage system that acts like a gigantic distributed “battery.” Coupled with traditional, shorter-term storage technologies, this system can help meet seasonal energy demands when renewables are variable, and provide a reliable and secure supply of electricity during periods of extreme weather.


Photo by Clayton Cardinalli on Unsplash