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Biomethane Injection into Natural Gas Networks


Biomethane Injection into Natural Gas Networks

The first systematic and comprehensive Handbook for biogas production, biogas use and biogas technology

Biomethane is a flexible and easily storable fuel that can be used wherever natural gas is used without the need to change any settings on equipment designed to use natural gas. In regions where a natural gas grid already exists, there is a ready-made system for the distribution of biomethane. In chapter 16 of the Biogas Handbook, Ecologic Institute's Dr. Wolfgang Urban briefly introduces the legal framework and technical standards of biomethane feed-in to the German gas network.

The chapter furthermore describes the different subsidy schemes and reliefs to encourage biomethane production or utilization; and the different available options for biomethane feed-in and feed-in facilities. It also looks at one of the most challenging aspects of biomethane feed-in – costs and energy efficiency – and outlines several options for improvement.

The Biogas Handbook: Science, Production and Applications

The "Biogas Handbook: Science, Production and Applications" provides a comprehensive and systematic guide to the development and deployment of biogas supply chains and technology. Following a concise overview of biogas as an energy option, part one explores biomass resources and fundamental science and engineering of biogas production. Plant design, engineering, process optimisation and digestate utilization are the focus of part two. Finally, part three discusses international experience and best practice in biogas utilization, including a review of market development and biomethane certification schemes.


Urban, Wolfgang 2013: "Biomethane injection into natural gas networks", in: Jerry Murphy Arthur Wellinger, David Baxter (ed.): The biogas handbook. Science, production and applications. [Woodhead Publishing Series in Energy. Oxford, Cambridge, Philadelphia, New Delhi: Woodhead Pubishing, 378-403.

25 pp.
Project ID
Table of Contents

16.1 Introduction
16.2. Technical and legal conditions of biomethane feed-in in Germany
16.2.1 Special regulations for gas network access of biogas plants
16.2.2 Technical standards and rules of technology
16.3 Design and operation of injection utilities
16.3.1 Basic design of a biomethane gas feed-in station
16.3.2 Gas compression
16.3.3 Pressure regulating and metering devices
16.3.4 Determination of gas composition
16.3.5 Conditioning facility
16.3.6 Gas mixing facility
16.4 Biomethane quality adjustments
16.4.1 Heating value adjustment by LPG
16.4.2 Computer-based heating value reconstruction method
16.4.3 Network zoning into districts with fixed heating value
16.4.4 Biomethane feed-in as additional gas
16.4.5 Comparison of the different network compatibility measures
16.5 Economic aspects of biomethane injection
16.6 Optimization and efficiency increase
16.7 Conclusion and future trends
16.8 Sources of further information and advice
16.9 References
16.10 Appendix: glossary

biomethane, natural gas grid, grid injection, gas injection regulation, gas conditioning, fuel, biomethane feed-in, feed-in facilities, energy efficiency, Germany