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[en] The thermal solar energy production is a promising and strongly growing sector. However, these technologies must be integrated to electric power systems, i.e. coupled with fossil-fired or biomass-fired plants, and the energy must be stored. This production can be either centralised or decentralised: this corresponds to different situations, different markets, different technologies and equipment (rows of mirrors to concentrate solar heat on a tube, linear Fresnel reflectors to concentrate solar heat on a tube, heliostats or mirrors which concentrate heat at the top of a tower, and parabolic disks which produce electricity with a Stirling gas engine at their focal point). This road-map focuses on electric power generation, and discusses key variables of the present market, proposes a vision for 2050, identifies objectives to be reached by 2015, and barriers to be removed, outlines the needs of demonstrators and their administrative framework.
[en] This study presents two complementary plans of renovation of buildings which are considered as energy sieves. The first one, so-called target scenario, aims at renovating such buildings belonging to the private sector within 10 years, according to objectives defined by the French government, with a D level as performance indicator. This scenario can thus be distinguished from the trend-based scenario which corresponds to a constant renovation rate, equal to the present one. The second plan is based on the possibility of making investments to help housings reaching the BBC level (BBC stands for Low Consumption Building). The implications of these both scenarios are herein analysed in terms of public and private investment, and in terms of assessment of economic, social, environmental and health benefits. After a presentation of the present situation, and various relevant elements (condition of the building stock, definition of energy poverty), the three scenarios (trend-based, target, and BBC) are presented and discussed