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Ivanpah Solar Electric Generating System

This page provides information on Ivanpah Solar Electric Generating Station, a concentrating solar power (CSP) project, with data organized by background, participants, and power plant configuration. Ivanpah consists of a total of three separate units, Ivanpah 1 has a total capacity of 126 MW and Ivanpah 2 and 3 are both 133 MW each. Upon completion, Ivanpah will be the largest solar thermal power tower system in the world.

Status Date: November 20, 2014
Project Overview
Project Name: Ivanpah Solar Electric Generating System (ISEGS)
Country: United States
Location: Primm, NV, California
Owner(s): NRG Energy; BrightSource Energy; Google
Technology: Power tower
Turbine Capacity: Net: 377.0 MW Gross: 392.0 MW
Status: Operational
Start Year: 2014

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Technology: Power tower
Status: Operational
Country: United States
City: Primm, NV
State: California
County: San Bernardino
Lat/Long Location: 35°33′ 8.5″ North, 115°27′ 30.97″ West
Land Area: 3,500 acres
Solar Resource: 2,717 kWh/m2/yr
Source of Solar Resource: NREL Solar Power Prospector
Electricity Generation: 1,079,232 MWh/yr (Expected/Planned)
Contact(s): Andy Taylor
Company: BrightSource Energy
Key References: Web site
Break Ground: October 2010
Start Production: January 2014
Cost (approx): 2,200 USD million
Construction Job-Years: 1896
Annual O&M Jobs: 90
PPA/Tariff Date: January 2010
PPA/Tariff Period: 25 years
Project Type: Commercial
Incentives: $1.6 billion in federal loan guarantees


Developer(s): BrightSource Energy
Owner(s) (%): NRG Energy; BrightSource Energy; Google
EPC Contractor: Bechtel Engineering
Generation Offtaker(s): Pacific Gas & Electric; Southern California Edison

Plant Configuration

Solar Field

Heliostat Solar-Field Aperture Area: 2,600,000 m²
# of Heliostats: 173,500
Heliostat Aperture Area: 15.0 m²
Heliostat Description: Each heliostat consists of two mirrors
Tower Height: 459 ft
Receiver Manufacturer: Riley Power
Receiver Type: Solar receiver steam generator
Heat-Transfer Fluid Type: Water
Receiver Inlet Temp: 480F
Receiver Outlet Temp: 1050F
Receiver Temp. Difference: 570F

Power Block

Turbine Capacity (Gross): 392.0 MW
Turbine Capacity (Net): 377.0 MW
Turbine Manufacturer: Siemens SST-900
Output Type: Steam Rankine
Power Cycle Pressure: 160.0 bar
Cooling Method: Dry cooling
Annual Solar-to-Electricity Efficiency (Gross): 28.72%
Fossil Backup Type: Natural gas

Thermal Storage

Storage Type: None