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Roof-top solar energy potential under performance-based building energy codes: The case of Spain | Grupo de Fluidodinámica Numérica

Roof-top solar energy potential under performance-based building energy codes: The case of Spain

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TítuloRoof-top solar energy potential under performance-based building energy codes: The case of Spain
Publication TypeJournal Article
Year of Publication2011
AuthorsIzquierdo S, Montañés C, Dopazo C, Fueyo N
JournalSolar Energy
Volume85
Start Page208
Issue1
Pagination208-213
Date Published01/2011
ISSN0038092X
Abstract

The quantification at regional level of the amount of energy (for thermal uses and for electricity) that can be generated by using solar systems in buildings is hindered by the availability of data for roof area estimation. In this note, we build on an existing geo-referenced method for determining available roof area for solar facilities in Spain to produce a quantitative picture of the likely limits of roof-top solar energy. The installation of solar hot water systems (SHWS) and photovoltaic systems (PV) is considered. After satisfying up to 70% (if possible) of the service hot water demand in every municipality, PV systems are installed in the remaining roof area. Results show that, applying this performance-based criterion, SHWS would contribute up to 1662 ktoe/y of primary energy (or 68.5% of the total thermal-energy demand for service hot water), while PV systems would provide 10 T W h/y of electricity (or 4.0% of the total electricity demand).

DOI10.1016/j.solener.2010.11.003
Short TitleSolar Energy