Utvärdering av effektstyrningssystemet EnergiDirigent® ur ett miljöperspektiv

Sammanfattning: Energy Director is a control and measuring system for energy consumption and is part of the product portfolio of E.ON AG for more efficient use of energy, offered to business customers. As of today, the system has only one parameter of control, namely power, and the objective of this essay has been to investigate whether other ones could be added. The emphasis is on the environmental perspective, which is why carbon dioxide has served as an example for this parameter in question. Parallel with the study of Energy Director electricity on the margin, calculations of carbon dioxide equivalents and also the Swedish trade of electricity have all been highlighted. Results indicate that when reductions in energy are made it is endorsed to omit from electricity on the margin rather than some mean distributed electricity, under certain conditions, and in addition the calculations of the reductions should be modified regarding the efficiency of the power stations fuelled by lignite and bituminous coal. Sweden practices trade with the Nordic countries as well as Poland and Germany. Import and export represents essential factors in the discussion of electricity on the margin but they can nonetheless today be included in calculations concerning savings in emission of carbon dioxide. The development of Energy Director is suggested to follow a model that includes the total emissions of carbon dioxide at each installation. Contributions are descended from local sources at the site, which are continuously measured, and from the energy that is obtained, where the equivalent amount of carbon dioxide has to be theoretically estimated. The total carbon dioxide limit control is then accomplished by means of controlling the obtained energy.