General Overview and Energy Efficiency -- Energy for the Present and Future: A World Energy Overview -- Energy, Present and Future -- Advanced Energy Conversion -- Energy efficiency in Mexico - a bird's eye view -- Energy efficiency and conservation in Mexico -- Traditional Energy Resources -- Status of the Mexican Electricity Generation -- Thermoeconomic Study of CCGT Plants -- CO2 Capture for Atmosphere Pollution Reduction -- Fossil Fuels Pollution and Air Quality Modeling -- Fundamentals of Boiling Water Reactor Safety Design and Operation -- General Overview of the Current Situation of Nuclear Energy -- The Clean and Safe Nuclear Reactors of the Future -- Transition Strategies for a Hydrogen Economy in Mexico -- Nuclear Energy Economical Viability -- Natural Safety Storage of Radioactive Waste -- The Reinassance of Nuclear Power -- Alternative Energy Resources -- Renewable Energy in Mexico: Current Status and Future Prospects -- The Development of Thermal Solar Cooling Systems -- Converting Solar Radiation to Electric Power in Mexico -- Some Recent Research on Solar Energy Technology -- Wind Energy: an opportunity for diversifying electricity generation in Mexico -- Development of geothermal energy in México and its energetic potential for the future -- Energy and Activated Carbon Production from Crop Biomass Byproducts -- Hydrogen: The Ecological Fuel for Mexican Future -- Nuclear Fusion as an Energy Option for the 21st Century. The world has entered a period of significant changes regarding the future of energy generation, mainly caused by the apparent exhaustion of hyd- carbons in the near future, and the Greenhouse gases (GHG) effect of alt- ing the climate worldwide. Mexico, as a developing country, and as the eleventh-most populated nation with the thirteenth-largest territory, and as the owner of important oil production resources, is a good example of a State needing to improve and increase its energy generation. A concerted action amongst the e- nomic sectors involved - both governmental and industrial - could dras- cally improve the present situation regarding the development of its alt- native energy resources. The main motivation for organizing the German-Mexican Symposium 2006 Energy for the future: towards a cleaner planet, was to get a global perspective for changing the present energy-mix in Mexico, currently based on fossil fuels, towards cleaner energy resources. To achieve this, a wide range of relevant topics must be analysed, such as the state of the art of each energy type, their potential use and benefits, social, economic, - litical and environmental aspects, and their inclusion as a real alternative to energy generation programs. It will take time for every country to reduce its dependence on hydrocarbons and to increase its alternative energies share.