In a word, functions of CSP in the power grid can be defined as follows: in the case of a small grid-connected scale, CSP can be used for peak load regulation, supporting the photovoltaic and wind power generation to meet the needs of system peak load and frequency regulation; when the grid-connected scale grows bigger and bigger, it is entirely possible for CSP to replace nuclear power and static hydropower in power systems. As to value of CSP, the National Renewable Energy Laboratory of the United State conducted a research experiment to compare photovoltaic power generation, wind power generation, CSP without thermal storage and CSP with thermal storage. Experimental results show that CSP can not only replace high-cost generator units but also reduce the number and relevant cost of generator starts and stops, decrease emission of harmful gas, improve capacity benefit at peak time, and cut marginal expenses of the whole system. Therefore, CSP has higher value, basically about 20% more than that of the photovoltaic power generation. And, I think highly of CSP’s value and functions in power systems in the future.