Page 120 - New Trends in Green Construction

Energy Sources and Renewable Energy
Figure 1 shows the average monthly values of the DCF index, obtained for each of the typical buildings. It is observed how, throughout the year, the highest value of the DCF index takes place in the buildings catalogued with the lowest economic level, with values of 54.77% in June, which indicates that in this month, more than half of the electrical demand of this type of housing is covered with the energy produced in the PV installation. The minimum value of this coverage index in this type of buildings takes place in the month of January, with a value of 27.73 %, so that only this small percentage of the demand is covered with the production of renewable energy present in the building, the rest of the energy consumed must be taken from the grid. The value of the DCF index in middle and higher-income dwellings is reduced on average by 3.19% and 9.38% respectively, this trend being maintained throughout the year. Current regulations can be decisive for consumers to decide to invest massively in this type of installations, especially when about half of the overall PV capacity is likely to be deployed on buildings. Only in this way will it be possible to achieve the proposed energy saving and environmental objectives.
Figure 1. Monthly average values of the DCF coefficient for the three types of buildings according to the economic level
4. Acknowledgment
This work is supported by the Spanish Ministry of Economy and Competitiveness under Research Project SCEMS TEC2013–47316–C3–1–P. It is also supported by an agreement with Solar del Valle SL company.
5. References
Palacios García E.J., Moreno-Muñoz, A., Santiago I., Flores-Arias J.M., Bellido-Outeiriño
F.J. (2017), Distributed energy resources integration and demand response: the role of stochastic demand modeling, Large scale grid integration of renewable energy sources. IET The Institution of Engineering and Technology, pp 245-278.
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DCF Total consumption (%)