Over the period 2000-2003, the Swedish Environmental Protection Agency carried out or assisted in around 20 evaluations of environmental work in the country. We have looked, for instance, at a number of instruments in the environmental area, how work towards some of the national environmental quality objectives is progressing and how some of the large appropriations in specifi c areas are used. The evaluations have provided valuable knowledge which will be put to use in the Swedish EPA, the Government Offi ces and other authorities and agencies in Sweden. They have led to changes and have been used for example in the “in-depth evaluation” of the environmental objectives and in investigations of instruments. Some have been used as study material at universities and colleges.This report represents an attempt at a synthesis of the 21 evaluations. It also contains a fact sheet for each evaluation, which, in a highly abridged form, states the more important observations, conclusions and proposals. The aim, target group and method of evaluation for each evaluation are presented in the fact sheets. We hope that the report will also be of interest and of use as worthwhile reading material for people who work outside Sweden, for example on method development in the environmental area.Original title: 21 utvärderingar – vad lär de oss? En syntes av ett antal utvärderingar på miljöområdet åren 2000 – 2003. ISBN 91-620-5366-3.