This document summarizes case studies of solar energy projects in Belgium, Estonia, and Finland. In Estonia, a 9-story apartment building installed a 140 kW solar thermal system with 64 collectors, reducing natural gas usage by 15% and achieving a 10-11 year payback. Another Estonian project proved larger solar parks are feasible. In Finland, Aalto University has researched solar technology for over 30 years, educating over 2500 professionals. TEKES, a Finnish innovation support center, provides funding to support the solar industry. OPAM Solar produces off-grid solar products for Finland and Africa.