J. Phys. IV France 09 (1999) Pr3-189-Pr3-194
Integration of solar thermal energy in a conventional power plant : The Colón solar projectM. Silva1, M. Blanco2 and V. Ruiz1
1 Grupo de Termodinámica, Escuela Superior de Ingenieros, Camino de los Descubrimientos s/n, 41098 Sevilla, Spain
2 CIEMAT, Plataforma Solar de Almería, Carretera de Senés s/n, Tabernas, Almería, Spain
This paper reports on the first phase of the Colón Solar Project, originally conceived as the hybrid repowering of an existing thermal power plant, with the addition of a gas turbine in a topping configuration integrating thermal energy (steam) produced by a solar system. However, the project developed in a changing economic environment, in which a new legal structure, still incomplete, as of January, 1998 has liberalized the electricity generation market. This forced the original configuration to be modified, resulting in an all-new combined cycle with solar energy integrated into a Heat Recovery Boiler. Basic plant engineering placed special emphasis on the most important solar components (heliostat and receiver), and an economic analysis showed that the plant is profitable under the assumptions of the analysis. Nevertheless, the relatively low IRR, as well as the uncertainty of realization of some of those assumptions, made the utility postpone its decision to build the plant.
© EDP Sciences 1999