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A master plan for creating a hydrogen valley in Spain

In 2003, a hydrogen strategy was developed by the Government of Aragon. Its main objective is the development of new hydrogen technologies integrated with renewable energies and the promotion of Aragon’s incorporation to economic activities related to the use of hydrogen as an energy vector. To that end, the organisation, management, and execution of a wide range of actions in order to generate, store and transport hydrogen for its use in fuel cells, in transport applications or for the generation of distributed energy is carried out. The Government of Aragon aims to encourage research, technological development, cogeneration and industrial adaptation, contributing to industrial modernisation and the improvement of competitiveness. The implantation of projects based on sustainable energies that provide technological innovation and promote the energetic and environmental sustainability are favoured. Nowadays there are 73 members of the hydrogen strategy which are part of its Board and they belong to different sectors of interest.

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Hydrogen valley in the Northern Netherlands

Over the past several years, the Northern Netherlands has accelerated its hydrogen project pipeline together with its ambitions of becoming the leading European hydrogen ecosystem. The Northern Netherlands has received recognition as the leading European Hydrogen Valley developing a full-fledged green hydrogen value chain. Furthermore, multinationals have increasingly committed to the Northern Netherlands as their hydrogen ecosystem of choice, and regional governments have increased their commitments to realize the Northern Netherlands hydrogen ecosystem.

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Involvement of industrial parks in the regional energy strategy – Neustrelitz

The city of Neustrelitz is a very ambitious municipality, especially in the areas of renewable energies, climate protection, and digitization. The local public utility company (Stadtwerke Neustrelitz), the municipality and the State Centre for Renewable Energy MV work hand in hand to promote the sustainable development of the municipality. The new city strategy for 2025 “green smart digital” unites the visions of the local actors. The development and implementation of a green business park is a further component in the realisation of the city vision 2025.

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Industrial symbiosis in Ennshafen

The ENNSHAFEN port, located in Enns, is the newest and most modern public port in Austria. Several local stakeholders are committed to invest in various types of energy cooperation: PV modules on (large) company roofs or other areas at the Ennshafen site, utilization of waste heat flux at Ennshafen between relevant companies, cooperation of companies regarding electricity (supply and demand) and gas (supply and demand), and electrification of the power supply of anchored
ships.

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Solar Heating and Cooling in an Energy Efficient Residential Building

Within a privately owned residential building a variety of technologies are implemented to reduce the energy consumption. Both a solar heating system and heat pump are connected to a boiler for the heating of water. This water is used as sanitary hot water. Space heating and cooling is achieved from fan coil units (FCUs); where hot or cold water circulates inside the convectors depending on the need. Finally, underfloor heating is established through a closed water pipe system, with a heat pump as heating source. The monitoring of the entire system takes place in one control unit.

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Zero-emission Settlement in Bad Aibling

In the south of Germany a small district heating network has been installed in the town of Mietraching/Bad Aibling. The main sources of district heating are a woodchip boiler, mainly used in cold days, and solar collectors, mainly used in the warm days. The solar collectors are connected to centralised and decentralised buffer tanks for energy storage. Furthermore, a gas installation is delivering peak load for in mid-winter. The district heating network supplies heating to about 130 households, 2 schools, office buildings and a hotel.

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Ensuring energy security and cost- efficient heat supply

The district heating system of Brasov has gone through several transformations in the attempt to find a solution for the zones located within the urban agglomeration of Brașov. Unfortunately, the lack of vision and the misun- derstanding of the advantages of such a system, coupled with a legislation that allows for easily installing natural gas individual boilers, led to a situation where only 4% of the local population was still connected to the DH in 2014 (reference year of the project).The future of this system is directly linked to the local policies, which should be supported by the population, by the real estate developers and last but not least, by policy makers.

The current strategy is trying to provide insight into the renewable sources that could be used in the future in order to ensure energy security and cost efficient heat supply at local level.

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Ensuring energy security and cost- efficient heat supply

Helsingør developed its own Climate Plan back in 2009. The municipality is part of a regional cooperation programme aimed at developing a Strategic Energy Plan in partnership with all the municipalities in the area, and is a signatory to the European Covenant of Mayors (www.eumayors.eu).

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Renewable heating strategy for a new development area

This case study covers the investigation of renewable heat supply options for the new development area «Teilraum 31» in Ansfelden. The area is mainly owned by the municipality which, therefore, can define priorities regarding energy efficiency and renewable energy. The new development area could include ca. 120,000 m2. According to the current planning strategy, it will be used for different types of buildings – mainly residential ones, and could reach a plot ratio of 0,45 to 0,55 per building lot. The expected buildings consist of around 100 single-family houses, 200 row houses and 10 small multi-family houses.

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