Biomethane (upgraded form of biogas) holds unlocked potential as a substitute to fossil natural gas, in terms of achieving climate reduction targets as well as developing a locally secured fuel supply. Biomethane is fully compatible with the existing natural gas grid infrastructure. Currently, nine countries in European Union are practicing natural gas grid injection. Remaining countries are in various phases of development concerning production and utilisation of biomethane. Successful deployment of a biomethane project requires coordinated action in terms of academic, industrial and economic co-operation. It demands established legal and political framework as well as supportive financial conditions. The thesis aims at researching how the state of development of biomethane generation and utilization gets affected by the support activities within a countries policy framework? To seek a solution, the theoretical framework of “Technological Innovation System (TIS)” is adapted. TIS provide a methodological approach to assess the development of an upcoming technology under the existing policies, regulatory and financial conditions. In the given study, the framework of TIS is adapted to the technology of “biomethane generation and injection into natural gas grid”. This adaptation led to the development of: Detailed overlapping matrix of the main structural components i.e. Actors, Networks and Institutions and their corresponding activities across the value chain. Development of a set of diagnostic questions and performance indicators, enabling an assessment of the dynamics of the technological system, eventually leading to the identification of strengths and weaknesses in the system. The adapted technological system analysis framework is further applied on two countries “Germany and UK” as case studies. With the aid of diagnostic questions, the dynamic system characteristics are evaluated in each country context. Germany reveals a well-functioning biomethane TIS. Considerable knowledge base and experience is available, appropriate policies and financial incentives are in place, dedicated organisations are established to address the technological and industrial issues. Germany currently has a market promoting biomethane utilisation via CHP applications. Further growth can be expected by addressing resource mobilisation to fulfill a larger share of heat demand and application as renewable transport fuel. Biomethane industry is in its nascent stage in the UK. At the time of thesis research two upgrading plants are in operation. Analysis of the system functions within UK, signals a healthy biogas industry, but there is lack of activity within the “biomethane” context. The industry is in the stage of knowledge development. Biomethane production is well communicated within national strategies. The key technical issues being encountered by the industry are the focus of research. A balanced market formation would require increasing the resource mobilisation in terms of availability of skilled manpower as well as providing access to financial capital. The industry is experiencing pilot trials and subsequent dissemination of information of the results of these trials to the stakeholders in the value chain is recommended. Overall, Technological Innovation System (TIS) has been an effective tool to evaluate the national approach towards development and deployment of biomethane as a technology .Moreover TIS assists in systematic identification of the strengths and weaknesses of the system. It provides a methodological approach to statically and dynamically analyse biomethane development strategy within a given region and can also assist in benchmarking the development conditions in more than one region. / European Project Titled "GreenGasGrids"

The thesis is focused on energetic utilisation of biomass. It was used a qualitative research and document analysis of articles. The first part deals with the theoretical framework, therefore definitions and possibilities of biomass utilisation. The second part contains methodology, follows research and its evaluation. The first aim of this thesis is to summarize the utilisation of biomass as renewable energy and to distinguish positive and negative impacts of the utilisation of this source and evaluate its economic efficiency. There are several possibilities of utilisation of biomass, but it is necessary to select the suitable process and its utilisation. Based on the large number of examples from life it can be stated that it is economically efficient. The second aim is to identify main misconceptions related to utilisation of biomass. The main misconception is comparing the utilisation of solar energy, which has not left positive attitude of people to renewable energy, with utilisation of biomass. There are few examples of comparing photovoltaic with utilisation of biomass on the same level. In regard of the basic principles of utilisation of biomass, those two sources cannot be compared at all, they are not similar. Another misconception is apprehension of appropriation of land used for growing energy...