[ fuel cells ]
a method to store excess energy when renewable generation is high and demand is low .
By using an electrolyser to convert renewable electricity into green hydrogen , the gas created can be stored in its gaseous form and used later – offering a practical and valuable answer to the question of how to manage power demand during peak periods .
This energy production model provides a flexible green hydrogen reserve that can be tapped into when needed , helping to balance the grid and reducing the need to curtail the production of electricity – a costly and wasteful step . This not only stabilises the grid but also maximises the use of renewable energy , ensuring that excess generation is put to good use and not wasted .
Battery storage vs green hydrogen
While large batteries are often held aloft as an option for storing excess electricity , their high costs per kWh of storage make them unsuitable for managing and saving large-scale quantities of energy . Batteries can definitely be effective for short-term energy balancing , but their financial and practical limitations hinder their suitability for storage over extended periods .
The ability to store and transport hydrogen provides more flexibility than that offered by large batteries because significantly less space is needed during utilisation . In contrast , green hydrogen storage offers a more scalable and cost-effective solution for dealing with significant volumes of surplus energy , particularly when large quantities need to be stored for longer durations .
Rendering of IE-GRID 1MW 30 ’ container concept
nature of IE-GRID ensures that the system can be tailored to the specific needs of different projects , providing flexibility and efficiency .
This on-demand power generation capability strengthens the case for fuel cells being put forward as an essential component in the modern energy management mix , enabling producers to provide an accurate and rapid response to fluctuations in electricity supply and demand . Unlike conventional power management systems , fuel cells can seamlessly adjust to grid needs , enhancing the overall flexibility and reliability of renewable energy integration .
Rapid response capabilities
Intelligent Energy ’ s proven fuel cell technology stands out for its ability to respond quickly to sudden changes in grid demand . This agility not only supports the smooth integration of renewable energy but also reduces the operational stress on the grid . This allows for a more stable and efficient power supply . Advanced control algorithms within systems like IE-GRID enable real-time adjustments to be made , ensuring electricity is delivered exactly when and where it ’ s needed .
Fuel cells for on-demand power
Hydrogen-powered fuel cells , particularly in combined units like Intelligent Energy ’ s IE- GRID system , provide a controlled and efficient way to convert stored green hydrogen back into electricity when the grid needs it . The modular
Our technology is already being used in the field – proving its worth . Our collaboration with the US Department of Defence at Hickam Air Force in Honolulu , Hawaii , is a demonstration of this at a micro-grid level . As part of this project , Intelligent Energy is supplying 600 kW
42 Hydrogen Tech World | Issue 18 | October 2024