World’s largest solar thermal power plant based on linear Fresnel technology

19th September 2013

Calasparra, Spain – In August 2012, the 30 MWel solar thermal power plant Puerto Errado 2 has started commercial operation. The plant daily supplies the electricity for 15‘000 homes, generated from 100% renewable resources. The plant which was turnkey delivered by the German technology provider Novatec Solar, performs excellent and even exceeds the expectations of the investors. From September 2012 until August 2013, the plant has generated 40,000 MWh of electricity.

The construction of the unique solar power plant on an area of 650,000m2 has started with the ground-breaking ceremony in April 2010. In 28 solar field rows of 1000 m length each, 302,000m2 mirror surface has been installed which captures the sun rays in southern Spain. The location Calasparra is predestined for the application, with more than 3‘000 hours of sun per year; the region is one of the sunniest in Europe.

Flat glass mirrors (so called primary reflectors) focus the sunlight onto an absorber tube filled with water. As a result, the water is heated up and evaporates at 275°C and 55 bar. The saturated steam is directed to two turbines, driving a 15 MW generator each. Thus, the thermal energy is converted into electricity and fed into the grid. The steam from the turbines is condensed in air cooled condensers and recirculated to the solar field. Special developed cleaning robots clean the mirrors during the night and ensure an almost waterless cleaning. The grass underneath the mirror rows is regularly grazed by sheep; thereby avoiding the use of machines. Furthermore, Puerto Errado 2 does not use additional energy produced by gas or oil combustion but generates steam directly, not using thermal oil as heat transfer fluid. The result is 100 percent ecological power.

The project company Tubo Sol PE2, S.L. has been founded under Spanish law for the construction and operation of the power station. Shareholder of the company are the Swiss utilities EBL (Genos-senschaft Elektra Baselland (51%), Industrielle Werke Basel (IWB) (12%), Elektrizitätswerke der Stadt Zürich (10%), Elektrizitätswerke des Kantons Zürich (6%), Energie Wasser Bern (6%) and the techno-logy provider Novatec Solar (15%).

Contact for press inquries regarding PE2:
Urs Steiner, President of the Supervisory Board
Tel: 0041 61 926 15 00

Tubo Sol PE2 S.L.
Tubo Sol PE2 S.L. is the owner of the 30 MW linear Fresnel power plant Puerto Errado 2 in the region of Murcia, Spain. Tubo Sol PE2 is a project company under spanish law which has been founded for the construction and operation of the power station.

Electricity, heat and telecommunication are the core businesses of the private and independent com-pany EBL. We are committed to an ecological power generation and want to make our contribution to sustainable protection of our environment.

The IWB is an independent company supplying the canton Basel city with electricity, drinking water and telecommunications services. Furthermore, the IWB provides natural gas for 27 municipalities in the North West of Switzerland. The IWB meet the needs of its customers for safe, affordable and sustainable energy sources.

ewz (Elektrizitätswerk der Stadt Zürich)
Since 1892, ewz supplies the city of Zurich and parts of the Canton Grisons with power and provides services related to energy. ewz places the highest value on a reliable, economical and environmentally friendly power supply and works actively for the promotion of renewable energies.

Elektrizitätswerke des Kantons Zürich (EKZ)
EKZ supplies almost ten percent of the electricity required in Switzerland. The company is involved in numerous activities for increasing energy efficiency and promoting renewable energy and offers a wide range of energy services.

Energie Wasser Bern (ewb)
Energie Wasser Bern is committed to a future-oriented and sustainable energy supply. The company plans to phase out nuclear power and has already begun to restructure the power generation. Besides electricity, the company supplies the city of Bern and surrounding communities with natural gas, water, connects them with glass fibers and offers services in the field of electric and gas mobility.

Novatec Solar
Novatec Solar is a leading technology provider of concentrated solar power technology. The company specialises in the manufacturing, assembly and operation of solar steam generators based on Fresnel collector technology. The headquarters of Novatec Solar GmbH is located in Karlsruhe, Germany.

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