Concentrating Solar Power is a concept of transforming solar irradiation into heat that is used for power production. There are different concentrating technologies (parabolic trough, fresnel, power tower etc.).
Solar Thermal Power, Concentrating Solar Thermal
Solar Thermal Energy
https://en.wikipedia.org/wiki/Solar_thermal_energy; own formulation
High-temperature collectors concentrate sunlight using mirrors or lenses and are generally used for fulfilling heat requirements up to 300 deg C / 20 bar pressure in industries, and for electric power production. Two categories include Concentrated Solar Thermal (CST) for fulfilling heat requirements in industries, and Concentrated Solar Power (CSP) when the heat collected is used for power generation.