This paper presents the results from a review of projects, technologies and applications utilizing seasonal thermal energy storage (STES) primarily for cooling loads. The review covers four countries (Canada, Germany, The Netherlands, Sweden) participating in an IEA R&D collaborative work program. The characteristics of 55 projects are summarized. Projects included in the review include projects with feasibility study only, projects under preparation and completed projects (approximately equal in number in each category). Project load type, system configuration, storage type, size and cost are included. Experience and lessons learned are also summarized.Assessments of the infrastructure in each country to design and implement such projects are given. Market development characteristics are reviewed in terms of legislation and regulations, and other barriers and drivers.