With a technology revolution underway there is a need to understand how each existing and new technology impacts energy scenarios in the near term and in the long term. To be able to do this, there is a need for identifying parameters of existing technologies and for each new technology that aims to offer low costs, high efficiency, and low environmental impact. The IEA-ETSAP methodology requires a detailed quantifiable understanding of each technology it includes in a scenario. Such well documented detailed quantifiable understanding is already available, to the IEA-ETSAP community, for many energy supply technologies and more technologies are added to the list regularly.