There is a growing awareness among all countries and their decision ma
kers, regardless of economic and industrial development, that the envi
ronment must be protected, leading towards a sustainable future. This
is especially important in the energy sector-which is the principal fa
ctor in economic and industrial development-since the primary energy s
ources of today, fossil fuels, are the main culprits of global environ
mental problems, such as the greenhouse effect, ozone layer depletion,
acid rains and pollution. Industrial countries, being greater consume
rs of fossil fuels, are affected to a greater extent by their environm
ental harms. Consequently, these countries are leading the way in envi
ronmental protection measures. The European Union, the second largest
industrial grouping in the world, has become one of the leaders in tak
ing important measures in the energy sector to curb the harmful emissi
ons over the years. Spain, a member of the European Union, has initiat
ed planning to reduce the pollutants produced by the energy sources an
d bring them in line with the European Union efforts, while keeping up
the country's economic development. This paper reports the efforts an
d planning of Spain through the year 2010 to comply with the European
Union environmental regulations on one hand and to sustain economic de
velopment on the other. (C) 1997 Elsevier Science Ltd. All rights rese
rved.