― As concentrating solar power technology is developing day by day, here is an explanation how parabolic trough works. ∙ Before going to parabolic trough, let’s understand the principle of CSP. ∙ The receiver receives heat from sun light. This heat is gathered in oil or other heat medium which further converts water into steam. This steam is used to run steam turbine which produces electricity. ∙ As you can see in the image the parabolic concentrator concentrates heat into the [...].