Read time: 3 mins
Based on Uncertainty ahead: Should stand-alone energy systems bet on hydrogen backup?, by Dan Virah-Sawmy, Fiona J. Beck and Bjorn Sturmberg, published December 2025.
Hydrogen is often promoted as a key solution for long-duration energy storage, but its economic value in stand-alone energy systems remains highly uncertain. Even under conditions designed to favour hydrogen, this study finds that it remains costly, raising important questions for policymakers and investors planning future energy systems.
Read time: 3 mins
Based on Uncertainty ahead: Should stand-alone energy systems bet on hydrogen backup?, by Dan Virah-Sawmy, Fiona J. Beck and Bjorn Sturmberg, published December 2025.
1
Hydrogen remains expensive, even under favourable conditions
Even when considering load profiles that strongly favour hydrogen, cost benefits remain limited.
2
Fuel cell costs are the critical bottleneck
The relative cost of fuel cells compared to batteries is the dominant factor limiting hydrogen viability.
3
Falling battery costs weaken the case for hydrogen
As batteries become cheaper, the economic argument for adding hydrogen rapidly diminishes.
Decarbonising remote and stand-alone energy systems is essential for achieving net zero, particularly in locations where extending the grid is impractical. While hydrogen is increasingly seen as a promising long-duration energy storage solution, its economic viability remains uncertain due to high costs and limited deployment of key technologies such as fuel cells and electrolysers.
This study uses a Monte Carlo framework to explore how uncertainty in future technology costs affects the competitiveness of hybrid battery/hydrogen systems. A total of 8,000 scenarios were simulated, comparing hybrid systems against battery-only alternatives under both constant and seasonal load conditions.
Importantly, the study focuses on load profiles that can be considered ideal for hydrogen, including prolonged and highly seasonal demand patterns, conditions under which hydrogen is expected to perform best. These scenarios therefore represent an upper-bound test of hydrogen’s economic potential.
Despite this favourable setup, the results show that hydrogen integration only becomes economically attractive under narrow and often unrealistic cost conditions. For constant loads, cost savings remain modest, typically below 12 per cent. Even in seasonal load scenarios, where hydrogen is theoretically most valuable, substantial benefits only occur under extreme and unlikely cost combinations, such as very low fuel cell costs combined with persistently high battery costs.
The analysis further shows that the ratio of fuel cell cost to battery cost is the dominant driver of system performance. Under current cost estimates, hydrogen delivers only marginal improvements, often below 5 per cent, and these benefits diminish further as battery costs continue to decline.
“Even under ideal conditions for hydrogen, cost benefits remain limited.”
