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Energy efficiency and smart energy
Energy efficiency at companies
The Port of Hamburg and the port-based industry account for a large proportion of the industrial energy consumed in the City of Hamburg. Evaluations of the energy-efficiency measures taken under the funding and support programme “Enterprises for Ressource Protection” revealed that port-based companies account for more than 40 per cent of Hamburg’s energy savings. This shows that the potential for saving energy in the Port of Hamburg is considerable, which is exactly what Hamburg’s funding and support programme “Enterprises for Ressource Protection” is aimed at: port-based companies receive consulting and financial support to implement energy-saving measures as well as to install energy measurement and control technology and introduce energy management systems. Amongst other things, measures are supported which relate to heating and cooling technology, electric-powered motors, compressed air, production technology and information technology. The goals hoped to be achieved by May 2015 are the implementation of energy-efficiency measures and the introduction of energy management systems to reduce annual carbon emissions by 12,000 tonnes.
Combined heat and power and the recovery of waste heat for in-house use
Combined heat and power (CHP) or co-generation is an electricity-generating method that recovers the waste heat produced. This excess heat can be used to heat or cool buildings or as industrial process heat. Not only CHP schemes but industrial processes, too, produce excess heat that can be captured for in-house use. Port-based companies can rely on funding and support programmes such as “Enterprises for Ressource Protection” for advice and aid. The aim hoped to be achieved by May 2015 is the installation of additional CHP plants and the recovery of unexploited excess heat produced by port-based businesses for in-house use to reduce annual carbon emissions by 50,000 tonnes.
Cross-company use of waste heat
Some port-based businesses produce more industrial waste heat than they can use for their own purposes. Supplying the surplus to neighbouring companies may prove an ideal ecological and economic solution. Such “energy co-operatives” will in future be taken account of in the location and land use policy. Already studies are being conducted as part of “Enterprises for Ressource Protection” to identify unused waste-heat sources in the port and how they can best be exploited. The aim hoped to be achieved by May 2015 is the implementation of pilot projects in cross-company waste-heat exploitation.
Demand-side management and virtual power plant
Generating electricity from renewable energies poses a particular challenge to grid management. Virtual power plants and targeted demand-side management systems help dealing with the uncertainties. In virtual power plants, decentralised electricity generators such as wind, CHP or solar power plants are combined to compensate for intermittent electricity production. A virtual power plant can be coupled with a demand side consisting of electricity consumers and storage systems, which enables the use of other synergies and a demand-side management in line with electricity supply. Under “Enterprises for Ressource Protection” production plants will be examined for their suitability as virtual power plants. At the same time, electricity consumers will be identified who can be switched to supply-based demand and who are willing to take part in an external demand-side management scheme. The virtual power plant and the combined demand side will then be coupled with storage systems. The aim hoped to be achieved by 2015 is the establishment and expansion of a demand-side management system and a virtual power plant with the port-operating businesses.
Storage technologies are of enormous importance when it comes to power derived from renewable energies as the highly intermittent wind or sun power frequently does not meet the demand on the grid. It must therefore be possible to store surplus electricity produced, for example in times when wind or solar power production is high, to provide it in times of peak demand. The potential for energy-storage schemes in the port area will be checked and identified, and potential options of use will then be outlined. The aim hoped to be achieved by 2015 is the development of initial project ideas and pilot projects.
Hydrogen produced from renewable energies
Hydrogen is a universal energy storage medium, which can be stored and transported in gaseous or liquid form. Used as fuel to power motors or in fuel cells, it generates electricity, heat or kinetic energy. The only emission is water vapour. To promote the use of hydrogen technology, options to convert the electricity generated locally from renewable energies to hydrogen via an electrolysis system, for instance, will be verified. Furthermore, the options to use the hydrogen thus generated to power vehicles or in production processes of the port industry, for example, will be analysed. The aim hoped to be achieved by mid 2014 is the analysis of options for using hydrogen in industrial applications and the construction of a demonstration plant to generate hydrogen from renewable energies.
Funding and support programme to refurbish commercial buildings
Over 60 per cent of non-residential buildings in Hamburg were built before the first thermal insulation regulation came into force in 1977. Unlike refurbishments of residential buildings, energy-efficiency related refurbishments of the building envelope of commercially used buildings are the exception. The funding and support programme “Energy Consulting and Energy-Efficiency Related Refurbishment of the Building Envelope of Non-Residential Buildings” also offers port-based companies advice on and aid for refurbishment measures. The programme will contribute to lowering energy consumption and CO2 emissions. The aim hoped to be achieved by May 2015 is to see at least three refurbishment projects in the area of the port funded by the support programme.
port of the future