1. Topic : Power To Gas Name : Hiten Chhajed
LAS493 : Topics in Sustainability and Energy
Name : Hiten Chhajed
Topic : Power To Gas

2. Power to Gas :
What?
Why?
The process
Gaps/drawbacks
Current and future research
Conclusion
Feedback/Q&A

3. Process : Electrolysis Methanation Injection The solution :
The problem?
Electrolysis
Methanation
Injection
Transmission issues
Surplus energy storage
The solution :
Power To Gas (PtG)

4. Electrolysis 1) AEL (Alkaline Electrolysis)
2) PEM (Polymer Electrolyte Membrane)
3) SOEC (Solid Oxide Electrolysis)

5. Methanation Methanation chemical reaction:
CO2 + 4 H2  CH4 + 2 H2O kJ/mol
CO + 3 H2  CH4 + H2O kJ/mol
Types of Methanation Reaction :
Biological
Catalytic
Microorganisms serve as biocatalyst
Operating temperature : degrees Celsius
Operating pressure : 1-10 bars
Suitable for small plants
Not so flexible
Lower Efficiency
Nickle based catalyst
Operating temperature : degrees Celsius
Operating pressure : bars
Suitable for larger plants
Very flexible
Higher Efficiency

6. Bigger Picture

7. Difficulties faced : Choice of electrolysis process Hydrogen Storage
Low Methanation efficiency
Fluctuating power inputs
Impurities with CO2
Limits the possible geographic sites due to CO2 sources

8. Thank you