4.3.2 technologies, including a high R&amp;D effort, that compensate for the current lack of internalization of the environmental costs of non-renewable technologies.  Aid for research and technological development in underdeveloped areas. &gt; The effective integration of renewable energy in the transport and building sectors (case of biomass and solar). 0 Ensure that from 2010 renewable energies are placed in a strategic and competitive position compared to fossil fuels, increasing their contribution to the Spanish energy mix with respect to PER considerations until achieving a contribution to gross electricity consumption of 32 % in 2012 and 37% in 2020. fossil fuels, increasing their contribution to the Spanish energy mix with respect to PER considerations until achieving a contribution to gross electricity consumption of 32% in 2012 and 37% in 2020. (ii) Measures Encourage actions that favor those less developed such as biomass, and thermoelectric and photovoltaic solar energy, stimulating investment in technological development that lowers current installation costs.. Promote small photovoltaic installations of less than 5 Kw., through the improvement of the premiums of the conditions of access to the network and the administrative procedures for obtaining subsidies and applications for connection permits. Increase in hydraulic use through the rehabilitation of closed mini-power plants, improvement of existing ones and installation of turbines in reservoirs that lack them. Provide investments in renewable energies and cogeneration with a framework of greater economic security that contributes to their strengthening, evaluating an improvement in the bonuses that the Tax on Economic Activities grants to companies that use or produce