ESPA (Electronic Structure Principles and Applications)  is a series of international conferences organized by the Spanish Community of Quantum Chemists. The ESPA conferences, initiated in 1998, have a two year periodicity and cover all major fields of Theoretical and Computational Chemistry. The previous ESPA editions were organized in Madrid (1998), San Sebastián (2000), Sevilla (2002), Valladolid (2004), Santiago de Compostela (2006), Palma de Mallorca (2008), Oviedo (2010), Barcelona (2012), Badajoz (2014) and Castellón (2016). These conferences were initially intended to bring together the Spanish Theoretical and Computational Chemistry community, however, they grew over time (both in national and international participation), thereby evolving into a key event with international reputation in the field.

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  10th ESPA - Castellón 2016
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  9th ESPA - Badajoz 2014
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  8th ESPA - Barcelona 2012
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  7th ESPA - Oviedo 2010
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  6th ESPA - Palma de Mallorca 2008
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  5th ESPA - Santiago de Comostela 2006
• 4th ESPA - Valladolid 2004
• 3rd ESPA - Sevilla 2002
• 2nd ESPA - Donostia 2000
• 1st ESPA - Miraflores - Madrid 1998