On June 21st, European Solar Day highlights the power and potential of the sun. Two energy cooperatives, Cooperativa de Energia (Romania) and Zelena Energetska Zadruga (Green Energy Cooperative) (Croatia), joined the celebrations. As technical partners of the pioneering LIFE LOOP project, both organisations are helping cities and citizens harness the power of the sun for community benefit. Their inspirational stories are featured in the Solar Saves campaign by Solar Power Europe.