The Cluster Active Archive is being assembled with the aim to hold high-quality, high-resolution Cluster instrument data for scientific use in both the near and the distant future. In this paper, the contributions to the archive from the Electric Field and Waves instrument are described. The archived data quantities are listed and explained, together with information on how they are computed and measures taken to ensure high scientific quality. Calibrating dc electric field data is a tedious process which involves both comparison with other data sets and theoretical as well as empirical modelling.