APS solar power plant can deliver power six hours after dark

Sponsored by

The Solana Generating Station combines uses concentrated solar power (CSP) technology with thermal energy storage to deliver renewable power up to six hours after the sun goes down.

The solar power project, which delivers electric power to customers of Arizona Public Service Co. (APS), sits on a three-square-mile area near Gila Bend, Arizona and has a capacity of 280 MW. This capacity is enough to provide energy for 70,000 Arizona homes — a city the size of Yuma

"Solana represents an important technological advance in solar energy production compared to the more-common photovoltaic technology, which needs direct sunlight in order to produce electricity," according to APS.

The project was constructed and is owned by Abengoa Solar.

The plant’s CSP technology produces electricity by collecting the sun’s heat to create steam that turns conventional turbines. The process begins with 2,700 parabolic trough mirrors, which follow the sun to focus its heat on a pipe containing a heat transfer fluid.

This fluid, a synthetic oil, can reach a temperature of 735 degrees Fahrenheit. The heat transfer fluid then flows to steam boilers, where it heats water to create steam. The steam drives two 140 MW turbines to produce electricity, much like a traditional power plant.

In addition to creating steam, the heat transfer fluid is used to heat molten salt in tanks adjacent to the steam boilers. The thermal energy storage system includes six pairs of hot and cold tanks with a capacity of 125,000 metric tons of salt, and the molten salt is kept at a minimum temperature of 530 degrees Fahrenheit.

When the sun goes down, the heat transfer fluid can be heated by the molten salt to create steam by running it through the tanks instead of the field of parabolic mirrors.

APS serves more than 1.1 million customers in 11 of the state’s 15 counties.

Sponsored by

CURRENT ARTICLES

Nebraska nuclear power plant taken temporarily offline

12/18/2014

The Fort Calhoun nuclear plant in Nebraska has been taken temporarily offline due to a lockout of its main generator

North Carolina group wants Duke Energy to build fewer power plants

12/18/2014 Duke Energy responded in a statement that NC WARN is complaining after the company built natural gas and solar power units...

Revenue from zero energy buildings to total nearly $4.6 trillion through 2035

12/18/2014 Worldwide revenue from zero energy buildings is expected to total nearly $4.6 trillion from 2014 through 2035, according t...

SDG&E Sunrise Powerline transmission line delivers 1 GW of renewable energy

12/18/2014 San Diego Gas & Electric said more than 1,000 MW of renewable power is being delivered to the San Diego region made po...

Westinghouse, EDF sign nuclear fuel supply contract

12/18/2014 Westinghouse Electric Co. announced that it has been awarded a long-term contract to provide several thousand tons of fuel...

ITC energizes Kansas transmission line, substations

12/18/2014

The 122-mile double-circuit, 345 kV transmission line runs east of Medicine Lodge, Kan., to Spearville, Kan. 

Gunfire damages BPA transmission insulators

12/18/2014

Damaged insulators can put people nearby at risk of electric shock, serious injury or death

INDUSTRY STOCKS

ON DEMAND WEBCASTS

Benefits of a Managed Service System

Attend this webinar, sponsored by Itron, to understand how utilizing managed services can optimiz...

Architecting Communication Networks for Smart Grids

This webinar will provide the essentials of communication networking to meet the challenges of th...

The Power of Behavioral Design: Lessons for Energy Efficiency Providers

Behavioral design principles are key differentiators when it comes to influencing consumer behavi...

3D BIM for Substations—Driving Efficiency from Design Through Operation and Maintenance

In this webinar, PESTECH will describe their transition to intelligent substation design and its ...

High Availability Networks. Application of IEC6439-3 Protocols for IEC61850 Process Bus implementation

Networks can now be built for the first time with genuinely uninterrupted data communication betw...

EL&P BUYER'S GUIDE PRODUCTS

Resources on Demand

Manages resource requests, tracks personnel movements, and supports lodging/logistics during a power restoration event.

MITEM Corp

Provides CRM solutions for regulated U.S. public utilities. The product, MitemView integrates differently designed systems to share critical data a...

Smart Grids

Quanta is contributing to its customers' smart grid initiatives by installing technology on power networks to provide energy management solutions f...

Horizontal Directional Drilling

With 28 small, mid-sized and large drilling rigs, Quanta Pipeline Services is one of the largest horizontal directional contractors in the world fo...

POWERGRID PRODUCT LISTINGS

EtherMate® Industrial Ethernet - IO Modules

LioN-M ProfiNet device with 16 digital I/O channels, channels can be used universally as inputs or outputs, M12 socket, ro...

OFL280 FlexTester - Handheld OTDR

AFL's OFL280 FlexTester offers an unmatched combination of fiber test functions, ease-of-use, portability, and value.

TRM® 2.0 - Test Results Manager PC Analysis and Reporting

Test Results Manager 2.0 (TRM® 2.0) is an all-in-one analysis, viewer and reporting tool designed for use with NOYES fiber...

Low-Smoke Zero Halogen Premise Distribution Cable

AFL’s Low-Smoke Zero Halogen (LSZH) distribution cable offers all of the benefits of a traditional 900 µm based optical ca...

FEATURED ENERGY JOBS

View more Job Listings >>

POWERGRID International

October 2014
Volume 19, Issue 10
1410pg_C1digital

ELECTRIC LIGHT & POWER

October 2014
Volume 92, Issue 5
1409ELP-cover_digital