This document is deliverable D26 the work package of WP4 Capacity standards and site selection criteria in the EU GeoCapacity project and provide a summary of the work carried out in WP4.1 Site selection criteria and WP4.2 Storage Capacity Standards. The objective of WP4.1 is to produce a set of site selection criteria required when considering sites for geological storage and to develop a site ranking methodology. The basic selection criteria, geological parameters and important ranking criteria have been outlined in the report D23 Site selection criteria. The criteria have been applied by GeoCapacity partners when selecting sites and can serve to standardize other projects and future work. Ranking methodology and application of the methodology to a test case study have been described in the D25 application of Standards. The objective of WP4.2 is development of methodologies for calculating storage capacity in different geological settings and application of the standards to a test area. A standardized methodology for storage capacity estimation in aquifers, hydrocarbon and coal fields have been outlined in the report D24 Storage capacity standards. The standards have been applied by GeoCapacity partners when estimating storage capacity and can be applied to other projects and future work as well. Application of the standards to a test area and sensitivity analyses of change in storage capacity based on different methodology have been described in the report D25 Application of standards