Date of Publication :8th September 2025

Abstract: Concentrated Solar Power (CSP) systems are seen as dependable substitutes for large-scale renewable energy production, particularly in areas like western India that have a high content of Direct Normal Irradiance (DNI). This study reviews the technological maturity, efficiency characteristics, and operating principles of the four most important CSP technologies: Parabolic Trough Collectors, Linear Fresnel Reflectors, Solar Tower (ST) Systems, & Parabolic Dish (PD) systems. As of today, LFR and PTC technologies rule over CSP capacity in India owing to their maturity in commercialization, moderate cost, and robust operational experience; ST and PD technologies provide relatively high operating temperature and efficiency, thus potentially well-suited for niche and modular applications. The study is based on the operational experience of large-scale projects in India's Andhra Pradesh, Gujarat, and Rajasthan. CSP offers the possibility of generating electricity and high value high-pressure industrial steam (131 bar, 521 °C) from solar energy with no direct carbon emissions, utilization of non-arable land and potential for hybridization. The biggest stumbling blocks are expensive upfront costs, large amounts of water used in arid areas and policy uncertainty. The schematic flowchart to represent the sequence of operation for a CSP plant. Thermal storage, precise tracking, and receiver design improvements are recognized as methods to enhance CSP's functionality & performance in the Indian renewable energy grid.

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