Hybrid system for concentrating solar power and energy from waste integration

This paper focuses on the energy analysis and plant design of a hybrid system based on CSP (Concentrating Solar to Power) and EfW (Energy from Waste) for improving its energy efficiency and the reduction of LCOE (Levelized Cost of Electricity). Based on the energy analysis of the plant, the incorporation of CSP was modeled to achieve increasing of annual solar fraction, assuming annual RDF (refuse derived fuel) availability, and maximizing annual energy production. The arrangement was chosen and the best configuration of the cycle was determined according optima design. The efficiency was quantified and the LCOE was selected as economic index. The energy analysis was carried out along an annual profile formed by 4 scenarios: EfW (Energy from Waste) plant processing raw domestic waste, CSP plant without storage, CSP with 7h TES (Thermal Energy Storage) and the hybrid system where CSP and EfW is integrated. According to the preliminary results, from standard CSP and CSP with 7h TES scenarios, the hybrid concept increases efficiency by 11% and 1%, as well as and the capacity factor by 580% and 109%, respectively. The LCOE reduce from 193,22 US$/MWh and 160,52 US$/MWh to 28,20 US$/MWh respectively. If compared with standard EfW, the efficiency increase 42%, and the capacity factor 24% and the LCOE increase 29% (LCOE from EfW 21,90 US$/MWh).