This work focuses on a technical and economic study of a solar power plant with cylindro-parabolic concentrators coupled with an indirect thermal energy storage system with two tanks located in Ghardaïa, using the System Advisor Model (SAM) calculation code. The various mathematical models of the components of the power plant have been established. Simulation of thermal and electrical production has been conducted, and the analytical and parametric study (multiple solar (MS), storage duration, levelized cost of electricity (LEC)) of the adopted storage system has been completed. We concluded the simulation with a financial study. The study demonstrated the feasibility of electricity and heat production through this technology in our sun-rich country, with a Direct Normal Irradiance (DNI) exceeding 2000 kWh/m2/year and an average daily sunshine duration exceeding 10 h. Annual production is directly linked to the DNI. The power plant can exceed its production capacity on sunny summer days, just as it can operate below capacity on cloudy winter days. The positive effect of storage only occurs when the plant operates at full capacity and the DNI significantly exceeds 300W/m2; otherwise, it would be a costly and unprofitable operation. It is also observed that the beneficial effect of storage on the net electricity produced only starts from MS = 1.5. And for the same solar multiple, there is an optimal storage duration that yields the best production.