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Parabolic trough (solar)


Technology Description

Parabolic trough systems consist of parallel rows of mirrors (reflectors) curved in one dimension to focus the sun's rays. Stainless steel pipes (absorber tubes) with a selective coating serve as the heat collectors and are insulated in an evacuated glass envelope. The reflectors and the absorber tubes move in tandem with the sun as it crosses the sky. A synthetic oil transfers the heat from the collector pipes to heat exchangers, producing superheated steam to run a steam turbine and produce electricity.

Relevance for Net Zero

High in regions with good Direct Normal Irradiation (DNI) resources, as solar thermal electricity (STE) plants in combination with thermal storage can be a dispatchable generation source, providing system services, e.g. inertia, and supporting the integration of solar PV

Key Countries

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