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

FERC grants California ISO waiver of EIM pricing parameters

07/30/2015 FERC on July 21 issued an order conditionally accepting, subject to a further compliance filing, readiness provisions for ...

Ameren seeks eminent domain authority for Illinois Rivers Project

07/30/2015

ATXI requested expedited approval of the petition, with a proposed deadline for decision on Sept. 10

Power demand records continue, ERCOT asks for conservation

07/30/2015 Electric demand this week has reached three consecutive July records, breaking 67,000 MW for the first time since 2011 

IPL to stop burning coal at Harding Street Station Unit No. 7

07/30/2015

IPL also received approval to install and operate wastewater treatment technologies at Harding Street

Hopes rise for offshore wind as U.S. builds its first offshore wind farm

07/30/2015 U.S. Secretary of the Interior Sally Jewell said Monday that lenders, regulators and stakeholders can now see a path forwa...

SunPower buys 1.5 GW U.S. solar power plant pipeline

07/30/2015

With the acquisition, SunPower has assumed ownership of projects in varying stages of development across 11 states

VIDEO: Riverside, California buys renewable energy from Iberdrola

07/29/2015

Iberdrola Renewables will deliver about 101,000 MWh of firm renewable energy annually  

FEATURED ENERGY JOBS
View more Job Listings >>

INDUSTRY STOCKS

ON DEMAND WEBCASTS

Solar + Storage: Capturing Opportunities and Overcoming Challenges

The convergence of solar and energy storage applications is under way. The combined application o...

Storage Enters the Global Stage: What’s the value proposition for your region?

For electricity storage, the events of the last two years have shown that the skepticism around t...

How to deploy mobile forms + devices to speed up field service processes & reporting

Overcoming the pain points associated with any process is much simpler and more cost effective th...

Beyond Integration: Three Dynamics Reshaping Renewables and the Grid

In a unique industry research initiative, DNV GL gathered views from over 1,600 energy sector par...

Engaging the Small and Mid-sized Business (SMB) Marketplace

This session will outline how Duke Energy leveraged Voice of Customer insights, previous experien...

EL&P BUYER'S GUIDE PRODUCTS

Nuclear Horizontal Modular Storage (NUHOMS®)

AREVA TN’s NRC-licensed NUHOMS® system ensures the highest safety and lowest dose performance. With no tipping, tripping and sliding, you have the...

Decontamination & Decommissioning

Decommissioning strategy development, cost estimates, plant modifications; system and building decontamination; RV segmentation; large component re...

Cavitation Peening

AREVA developed its innovative solution for asset management, significantly extending the life of reactor components. Cavitation Peening is a perma...

ATRIUM™ 11 for BWR Fuel

ATRIUM™ 11 design fuel – in operation since 2012 – provides significantly lower fuel rod power levels for power uprate margins, operational flexib...

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...

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...

OFL280 FlexTester - Handheld OTDR

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

ADSS Mini-Span® Fiber Optic Cable

AFL Mini-Span® All-Dielectric Self-Supporting (ADSS) cable is designed for outside plant aerial and duct applications in l...

POWERGRID International

May 2015
Volume 20, Issue 5
1505pg_C1

ELECTRIC LIGHT & POWER

April 2015
Volume 93, Issue 2
1503ELP_C1