The Climate Change Performance Index is an instrument supposed to
enhance transparency in international climate politics. Its aim is to
encourage political and social pressure on those countries
which have,
up to now, failed to take ambitious actions on climate protection as
well as to highlight countries with best-practice climate policies. On
the basis of standardised criteria, the index evaluates and compares the
climate protection performance of 58 countries that are, together,
responsible for more than 90 percent of global energy-related CO2
emissions. 80 percent of the evaluation is based on objective indicators
of emissions trend and emissions level. 20 percent of the index results
are built upon national and international climate policy assessments by
more than 200 experts from the respective countries.