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Next Generation of Solar Energy Storage Advances as Nevada Project Begins Commissioning

U.S.-developed energy storage technology at Crescent Dunes Solar Energy Project leads storage revolution for solar industry

SANTA MONICA, Calif., Feb. 12, 2014 /PRNewswire/ -- SolarReserve, a leading worldwide developer of large-scale solar power projects and advanced solar thermal technology, today announced that construction of the 110 megawatt (MW) Crescent Dunes Solar Energy Project located near Tonopah, Nevada, marked another major milestone by entering the plant commissioning phase. Crescent Dunes is the first utility-scale facility in the world to feature advanced molten salt power tower energy storage capabilities. SolarReserve's unique and innovative energy storage technology provides for larger scale installations and high efficiency energy collection and storage. The Crescent Dunes Project is more than five times the capacity output of pilot projects that have previously tested this technology.

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As a result of the advanced energy storage technology, the 110 MW project will generate more than 500,000 megawatt-hours per year, enough to power 75,000 homes during peak electricity periods. This annual output is more than twice that of other technologies per MW of capacity, such as photovoltaics (PV) or direct steam solar thermal.  The storage technology also eliminates the need for any backup fossil fuels, such as natural gas, which are needed with other technologies to keep the system going during times of no or low solar resource. Nevada's largest electric utility, NV Energy, will purchase 100 percent of the electricity generated, under a 25-year power purchase agreement.  Full commercial operation is scheduled for later in 2014.

Commissioning is the initial stage of bringing the project into operations and includes system-by-system verification and startup, as well as equipment calibration and testing.  Commissioning activities underway at Crescent Dunes include energization of the utility interconnection system and other electrical systems, as well as the first stages of testing and calibration of the heliostat field. This heliostat field is comprised of more than 10,000 "billboard-sized" mirrors that track the sun and total more than 1 million square meters of glass.  Full commissioning activities will also include startup of the demineralized water, air, steam, cooling and many other systems which are commonly found in traditional power plants.  However, unlike traditional power plants, commissioning includes systems unique to Crescent Dunes such as a Heliostat Field Control System that will control and concentrate the sun's energy and also the Molten Salt System that will harness, store and transform the sun's energy into superheated steam, making this the most advanced solar power plant in the world. The facility also includes a dry cooled condenser in a hybrid configuration to minimize water use to levels well below that of conventional power plants.

"Start of commissioning of the Crescent Dunes solar power plant marks a critical milestone for the project as well as the solar industry. We are now able to build utility-scale power plants, fueled only by the sun, which operate on-demand, day and night, just like traditional fossil fuel or nuclear power plants," said SolarReserve's CEO Kevin Smith. "SolarReserve's industry-leading solar thermal energy storage technology solves the intermittency issue that limits the use of other renewable energy projects and thus enables firm, reliable delivery of electricity whether or not the sun is shining or the wind is blowing."

The Crescent Dunes plant is the showcase for SolarReserve's game-changing energy storage technology—a realistic solar energy solution that operates day and night like coal, natural gas, oil, diesel and nuclear plants, but without the harmful emissions or hazardous wastes associated those traditional plants.  Additionally, Crescent Dunes includes the capability to dry cool the steam cycle, an environmentally friendly low water use feature that will saves millions of gallons of water each year. Once operational, the 110 MW Crescent Dunes plant will be the world's largest solar thermal plant with fully integrated energy storage.

SolarReserve is joined as investors in the project by ACS Cobra, a worldwide leader in the engineering and construction of power plants and thermal solar facilities, and the equity capital practice of Santander, a global financial services and banking leader. ACS Cobra's Nevada-based affiliate, Cobra Thermosolar Plants Inc., is constructing the facility as the general contractor while utilizing Nevada and regional subcontractors to perform the work.  The project also closed on $737 million in project debt along with a loan guarantee from the U.S. Department of Energy as part of the overall project financing that was completed in the fall of 2011.

About SolarReserve

SolarReserve, LLC – headquartered in Santa Monica, California – is a leading developer of large-scale solar energy projects and advanced solar thermal technology.  The Company has global development activities and more than $1.8 billion of projects in construction. SolarReserve has commercialized the world's leading solar thermal energy storage technology utilizing molten salt in a power tower configuration. SolarReserve's solar energy storage technology has the capability to deliver clean, reliable electricity "on demand" at any time, day and night. SolarReserve's experienced team of power project professionals has assembled an extensive 5,000 MW worldwide development portfolio of large-scale solar projects, including some featuring advanced solar thermal technology (CSP) and others utilizing photovoltaic (PV) technology.

In addition to the Crescent Dunes CSP project located in Nevada, SolarReserve has three photovoltaic projects, totaling 246 MW of generation capacity, in construction in South Africa.  The Letsatsi and Lesedi power projects, each 75 MW in size, were selected as the "African Renewable Energy Deal of the Year" by Project Finance Magazine in 2012.  The three projects have a combined capital cost of more than $820 million and are all slated for commercial operation in 2014.

In addition to its headquarters in the US, SolarReserve has offices in Spain, Chile, South Africa, Turkey, Australia and the UK, with development activities underway in the Middle East, Africa, Australia, China, and Latin America.

U.S. Media Contact: Mary Grikas, SolarReserve, +1.310.315.2274, [email protected]

For more information: www.SolarReserve.com

About ACS Cobra

The ACS Group is a world leader in the construction and services activities taking part in key sectors for the economy including energy and infrastructure. The ACS Group operates in all fields of applied engineering, from development and construction of new projects to maintenance of industrial infrastructure in the energy, communications and control systems sectors.  A commitment to sustainability is an inherent part of the ACS Group's corporate and business strategy – ACS is committed to the social and economic progress of the countries in which it operates.

Media Contact:
Avda. Pio XII 102
28036 Madrid, Spain
+34 91 343 92 00
[email protected] / http://www.grupoacs.com

About Santander

Banco Santander (SAN.MC, STD.N, BNC.LN) is a retail and commercial bank, based in Spain, with a presence in 10 main markets. Santander is the largest bank in the euro zone by market capitalization. Founded in 1857, Santander had EUR 1.24 trillion in managed funds, 103 million customers, 13,927 branches – more than any other international bank – and 182,958 employees at the close of 2013. It is the largest financial group in Spain and Latin America. It also has significant positions in the United Kingdom, Portugal, Germany, Poland and the northeast United States. Santander registered EUR 4.37 billion in attributable profit in 2013, an increase of 90% from the previous year.

Media Contact:
Ciudad Grupo Santander Edificio Arrecife Pl. 2

28660 Boadilla del Monte (Madrid), Spain
+34 91 289 52 11
[email protected] / http://www.santander.com

SOURCE SolarReserve

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