The Role of Power-to-Gas in Long-Duration Energy Storage
The ultimate role of P2G in the long-duration energy storage landscape will be defined by how we navigate the complex interplay between its profound potential and its persistent challenges.
While still in its infancy, power-to-gas (P2G) technology is one of the few viable options for large-scale energy storage solutions. Converting excess renewable energy into methane allows storing high energy amounts for a long time in existing gas infrastructures.
Power2Gas (P2G) is a process that uses surplus renewable energy to convert water to hydrogen ('green hydrogen') with electrolysis. The gas can then undergo methanation, to create synthetic natural gas (bio-SNG - 'green methane').
A novel storage service mode is proposed combining P2G technology with microgrids. Optimization models are tailored for distributed energy system management. Nash bargaining based-model reformulation is used for fair benefit distribution. The performance is investigated focusing on the full recovery of solar power.
In this ESaaS mode, the P2G system acts as an energy trading hub. The ESaaS operator manages the system and enables microgrids to access energy storage services. In return, the ESaaS operator generates revenue through electricity and hydrogen trading.
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