The document discusses the commercial viability of solar thermal power generation systems in India under new market and regulatory developments. It provides background on solar energy potential in India, reviews global and domestic experience with solar thermal power projects, and analyzes the key Indian project proposals. Technical issues around capital costs, capacity utilization factors, and unproven technologies are discussed. The document recommends parameters like capital subsidy, fossil fuel backup allowance, and development of a reliable power source to achieve viable tariffs of Rs. 22-27/unit for solar thermal power in India.