Renewable energy for climate change mitigation and sustainable development. Ashwani Kumar The continued use of fossil fuels will require a significant amount of carbon dioxide to be removed by either physical capture and storage geologically or in the deep oceans or through biological capture at the source as algae. Renewable energy technologies are being called upon to reduce the release of carbondioxide into the atmosphere through development of a more sustainable energy system, and are expected to play a role in “energizing” the development process for both large and small developing countries. They are also expected to provide economic and energy security for developed and developing countries, and are seen as providing new business opportunities and jobs around the world. What ever concentration are decided by policy makers to meet the goal of Article 2 of the UN Framework Convention on Climate Change to avoid dangerous anthropogenic damage to the climate system renewable energy sources shall play an important role in it. The different topics cover R&D results, demonstrations, state-of-arts, technologies, equipments and good practices for best solutions for Bioenergy use. Biomass energy Liquid/gas/ Transportation, solid fuels, Heat (H,M,L),Direct solar energy Cooling Geothermal energy Buildings, Electricity Work (mech) ,Hydro energy Work (elec) ,Industry Ocean energy Lighting ,Wind energy are some of the renewable energy sources being developed globally. . 1. Renewable energy sources that rely upon capturing the natural energy fluxes of the sun : Biomass and bioenergy, the wind, gravity, photosynthesis and geothermal heat 2. Bioenergy policy in different countries around the world, and bioenergy promoting programmes and fossil-free examples, security of energy supply. Legislation, Green values, strategies and market instruments, certificates, feed in tariffs, emission trading. 3. Biomass Demand, Supply and Employment: Potentials of different biomass resources (forest, agro, by-products, waste) quantities, measurements methods, qualities and properties for feedstock from forestry, agriculture, peatlands, municipals and processing industry. 4. Market potential and demands, green energy markets. Bioenergy markets by sectors, national and areal demonstration and markets, implementations of bioenergy business and use, fuel quality assurances and standards, price competitiveness. Rural employment and entrepreneur business models and practices. 5. Sustainable Criteria of Bioenergy: Sustainable use of bioenergy, models, sustainability criteria of biofuels and biomasses, LCA on green house gas reduction, carbon dioxide capture. Technologies and systems for lowering emissions and nanoparticles, healthy questions, recycling and ash handling, flue gas cleaning, sustainable development 6. Fuel Production Technology and Economy:Logistics and production technologies of biomasses from forest, agriculture and peatlands. Business models, procurement and transport systems, quality and cost handling, energy efficiency and economy of bioenergy production chains, management and operational tools. 7. CHP and Power Production: Combined Heat and Power Production (CHP), Nordic NordPool electricity markets, market system and trade, CO2-emission trading and market visions, co-firing, combustion and boiler systems and technologies, carbon dioxide capture. Technologies and systems for CHP production, market implementations, Co-combustion with peat. 8. Individual House Heating Solutions: Small boilers, firewood and pellet stoves and ovens. Low 8. Fuel demands and boiler and biofuel certification (billets, fire wood, pellets, wood chips, biogas, bioliquers etc). 9. Solid conversion: Production and properties of pellets, torrefaction and production of biocarbons 10. Chemical Conversion Technologies: Gasification, pyrolysis, biological conversion and liquid fuels production (biodiesel, ethanol, direct/indirect liquefaction) 11. Biogas: Production of biogas from different sources. Upgrading to methane. Use in different sectors. 12. Biofuels for Transport: New innovations, biofuels and growing markets, first and second generation biofuels, car technologies, sustainability of biofuels. 13. Socio-economic aspects of climate change and implications for sustainable development