cooo’s key goal is to make solar energy production and consumption accessible to everyone, making the energy system in Spain both sustainable and accountable. We buy solar plants that we then divide into participations starting at €100 for long-term investments and €1000 for short-term ones. In the 15 years since Ecooo was created, we have socialised 124 solar plants throughout Spain, with more than 4.500 participants, avoiding the emission of 40.836T CO2 to the atmosphere. Ecooo’s solar-energy plants are registered and are entitled to a steady retribution for a 30-year period. The return rate of investments is calculated according to the income generated quarterly by energy sales of each plant, and deducting the maintenance, taxes, and managing costs. Profits are shared among participants according to the amount of money they have invested.