bert kohlmann heads the center for research and development of renewable energy.in less than ten years, costa rica plans to meet all its electricity needs with renewables. >> costa rica has many excellent options when it comes renewable energy -- we have solar energy, geothermal energy, biomass, water power, and wind power. we have all of that here in costa rica. >> the lectures are in english. around two-thirds of the students come from abroad. >> i come from nicaragua. my name is francisco leiva, and i think with this course i can use all the knowledge to use in my region, because we have a lot of wind energy and also solar energy. >> the students go wherever there's environmental technology -- even on top of a roof. this solar energy unit heats water. >> what i have here is a here is a hand-held infrared thermometer. so if you hold that to the collector and press the button, than you can read, what the temperature of the collector is at the moment. >> it's registering 35 degrees celcius. >> the entire campus maintains high environmental standards. every newcome