Cost–Benefit Analysis of Solar Thermal Plants with Storage in a Hydrothermal System

Energies

André Luiz Diniz¹  Ana Paula Cardoso Guimarães¹  Leonardo dos Santos Reis Vieira¹  Cibelle Pereira Trama²  Amaro Olímpio Pereira Júnior² 

[1] Electrical Energy Research Center (CEPEL), Rio de Janeiro 21941-911, RJ, Brazil;Energy Planning Program, Alberto Luiz Coimbra Institute for Graduate Studies and Engineering Research, Federal University of Rio de Janeiro (PPE/COPPE-UFRJ), Rio de Janeiro 21941-914, RJ, Brazil;

关键词: concentrated solar power;    thermal energy storage;    levelized cost of electricity;    energy value;    net cost of electricity;    hydrothermal system;   

DOI  :  10.3390/en14185662

来源: DOAJ

【 摘 要 】

Economic feasibility studies of concentrated solar power (CSP) plants with thermal energy storage (TES) systems have been mainly based on the levelized cost of electricity (LCOE), disregarding the economic benefits to the electricity system resulting from the dispatchability of the CSP plants. The analysis of these benefits is essential since the existence of storage can provide greater operating flexibility to the system. Although there are few studies on the benefits of CSP plants in thermoelectric systems, this analysis has not yet been done in a predominantly hydroelectric system. In this paper, CSP plants with TES systems were inserted in a hydrothermal system in order to estimate the economic benefits and the net cost of electricity generated by those plants. The System Advisor Model (SAM) and the hydrothermal scheduling model DESSEM were used in a real case study of inclusion of CSP plants in the Brazilian system. The results indicate that the cost of a CSP plant, previously estimated by the LCOE, can be reduced by at least 37% when considering its benefits to a hydrothermal system, increasing its competitiveness with other technologies. Therefore, we propose the use of the net cost for an appropriate comparison among energy sources.

【 授权许可】

Unknown