PS10 and PS20

PS10 and PS20
Name	PS10 and PS20
Location	Sanlúcar la Mayor, Andalusia, Spain
Status	Operational
Commissioning	2007 (PS10), 2012 (PS20)
Owner	Abengoa, Cobra, Acciona (various operators)
Technology	Solar power tower, heliostat field
Capacity	11 MW (PS10), 20 MW (PS20)

PS10 and PS20 are concentrated solar power tower plants located near Seville in Andalusia, Spain. Commissioned in the late 2000s and early 2010s, they were developed by firms linked to Abengoa and constructed near industrial and research centers in the Andalucía region, contributing to Spain’s renewable energy portfolio during rapid expansion of solar projects across Europe. They sit within a landscape of policy, investment, and technology actors that include energy companies, research institutes, and international markets.

Overview

PS10 and PS20 are commercial-scale concentrated solar power (CSP) tower installations sited in the municipality of Sanlúcar la Mayor, close to Seville and the Doñana National Park buffer zone. They emerged during a period of policy support from the Spanish government and regulatory frameworks influenced by the European Union renewable targets and directives. Project development involved corporate entities such as Abengoa, Acciona, and later contractors like Cobra, intersecting with financiers and insurers from institutions such as the European Investment Bank and multinational banks. The plants attracted attention from industry conferences like Intersolar, COP summits, and academic centers including CIEMAT and Universidad de Sevilla.

Design and Technology

Both installations utilize a central receiver tower surrounded by a heliostat field, a configuration that draws on research from laboratories and pilot facilities like PSA Solar Platform, SENER, and projects in Almería and Algeria. Heliostat mirrors focus sunlight onto a receiver atop a tower where a heat transfer fluid—often thermal oil or steam as used in projects influenced by Solar One, Solar Two, and Ivanpah Solar Power Facility developments—produces steam driving a turbine manufactured by firms similar to Siemens or Alstom. Engineering and construction contractors included industrial groups with experience in projects like Gemasolar, Andasol, and other CSP plants. Control systems integrate components from automation suppliers in the vein of Siemens, Schneider Electric, and data platforms used in utility operations by companies like Iberdrola and Endesa.

Operational History

PS10 entered commercial operation in 2007, followed by PS20 around 2012, during a wave of Spanish renewable rollouts that paralleled deployment in countries such as United States, China, Morocco, and South Africa. Their operations intersected with policy shifts including Spanish tariff reforms and international market pressures from gas and nuclear incumbents like Repsol, Enel, and EDF. Maintenance and upgrades were informed by experience from plants like Gemasolar and incidents at other towers documented in industry literature and standards from IEC and ASME. Operational data were monitored by research partners and stakeholders including CIEMAT, CSIC, and university researchers from University of Córdoba and Technical University of Madrid.

Performance and Efficiency

Reported net capacities—approximately 11 MW for PS10 and 20 MW for PS20—translate into annual generation metrics used in comparisons with photovoltaic plants such as Córdoba PV plants and thermal storage-enabled CSP like Gemasolar. Efficiency factors drew on receiver design lessons from projects like Solar Two and international research consortia including IES-UPM and National Renewable Energy Laboratory. Performance assessments considered heliostat field layout, optical losses studied alongside examples from Ivanpah, thermal conversion efficiency akin to steam cycles by Alstom/Siemens, and capacity factors compared with thermal storage systems in Andasol and hybridization examples at Solana Generating Station. Seasonal and diurnal variability were evaluated against regional irradiance datasets maintained by agencies such as AEMET.

Environmental and Economic Impact

Environmental impact analyses examined land use near Doñana National Park, avian mortality concerns similar to discussions around Ivanpah and conservation groups, and water consumption issues referenced against cooling technologies used across CSP and nuclear facilities like Garoña. Economic impacts considered capital expenditure profiles similar to projects financed with support from European Investment Bank instruments and national incentives, job creation comparable to other renewables projects promoted by entities such as Red Eléctrica de España and SEOPAN, and interactions with electricity market mechanisms operated by OMIE and grid operators. Broader implications connected to climate policy dialogues at UNFCCC meetings and innovation funding from programs like the European Commission’s framework programs.

Comparative Analysis and Variants

PS10 and PS20 are often contrasted with other CSP technologies such as parabolic trough arrays exemplified by Andasol, central receivers like Gemasolar with molten salt storage, and tower projects such as Ivanpah in scale and storage capability. Variants and technological evolutions in the sector include molten salt receivers, direct steam generation as trialed in research by PSA Solar Platform, and integration with hybrid gas turbines observed in demonstration projects backed by utilities like Iberdrola and Endesa. International comparisons span deployments in United States, Egypt, Morocco, Chile, and South Africa, and involve manufacturers and developers such as Abengoa, Acciona, Siemens, NREL, and SENER.

Category:Concentrated solar power in Spain