This document discusses operational modeling of sustainable gas supply chains. It examines the cost of decentralized biogas production and centralized upgrading and injection into the natural gas grid. It finds economies of scale for centralized production, with a cost of 13 €ct/Nm3. It also looks at matching variable biogas supply to seasonal gas demand. Scenarios include flexible biogas production, green gas storage, and adding a second digester. Comparing these scenarios at a 300 Nm3/hr scale, expanding the model, and increasing gas demand coverage.

1. Operational modeling of
sustainable gas supply chains
Evert Jan Hengeveld, Jan Bekkering

2. Basic sustainable gas supply chain
Algemene informatie

3. Cost price in relation to scale

4. Does decentralized production of biogas and
centralized upgrading and injection in the natural gas
grid make sense?

5. Influence decentralized production on cost price
Scale advantage for the configuration with a centralized digester, up to
13 €ct / Nm3.

6. Matching supply and demand
Algemene informatie
time
mn
3/hr
time
tonnes/yr
time
tonnes
time
mn
3/hr
time
mn
3/hr
What is the cost price of green gas as a function of
scale, when the seasonal fluctuation in gas demand
must be met by a green gas supply chain?

7. Data gas demand in a geographical region
Algemene informatie

8. Scenario 1: Flexible biogas production
Algemene informatie
timemn
3/hr time
mn
3/hr

9. Scenario 2: Green gas storage within supply chain
Algemene informatie
Gas storageQ ≦ 10,000 Nm3: pipes 8.5 bar
10,000 < Q < 300,000 Nm3: pipes 100 bar (and
compression)

10. Scenario 3: Adding second digester (with 6
months production)
Algemene informatie
Production second digester only during winter months

11. Comparison at scale 300 Nm3/hr
Algemene informatie

12. Expanding the model
Algemene informatie

13. Increasing the Gas Demand Coverage (GDC)
Algemene informatie