Solar Thermal Power Tower Technology Providing Utility-Scale, Reliable, Clean Energy Generation. Yasser Dib CSP Today USA, Las Vegas June 28, 2012

Transcription

1 Solar Thermal Power Tower Technology Providing Utility-Scale, Reliable, Clean Energy Generation Yasser Dib CSP Today USA, Las Vegas June 28,

2 Introduction BrightSource Energy designs, develops and deploys concentrating solar thermal technology to produce high-value steam for electric power, petroleum and industrial-process markets worldwide. 2

3 An Unmatched Legacy in Solar Thermal Sept 2007 Application for Certification (AFC) of Ivanpah filed with CEC; deemed DataAdequate Oct 2011 Coalinga project delivered to Chevron Feb 2012 Selected by Sasol for South African Solar Plant design Ivanpah: CSP Solar Project of the Year (Solar Power Gen USA) March 2012 Founding member of CSP Alliance April 2012 Ivanpah: Energy Project of the Year (USC CMAA Green Symposium) Solar Energy Generating Systems (SEGS) in Mohave Desert built by company s original engineering team Company founded 1980 s 1990 s April 2008 Signed 900MW PPA with PG&E June 2008 SEDC startup pilot plant proof of concept Oct 2010 Ivanpah approved to commence construction boots on the ground April 2011 $2.2 B Ivanpah Project financial close 2013 Ivanpah Commencement of Operations: Unit 1: Q2 (PG&E) Unit 2: Q3 (SCE) Unit 3: Q4 (PG&E) Feb 2009 World s largest solar deal signed: 1.3GW PPA with Southern California Edison (SCE) 3

4 BrightSource Power Tower Components 4 4

5 Heliostats Overview Two flat glass mirrors (2.3m x 3.3m) mounted on a single pylon equipped with a computercontrolled drive system Heliostat individually positioned to optimize annual plant output and revenue Dual-axis tracking significantly increases plant output, particularly in winter months and late afternoon hours of the day Low-impact design avoids costly extensive land grading and concrete pads 5

6 Proprietary Optimization Control Software Overview Solar Field Integration and Control System (SFINCS) Algorithmic software determines the optimal position of each heliostat accounting for the unique conditions of each project site The SFINCS control system manages distribution of energy across the solar receiver using real-time heliostat-aiming and closed-loop feedback On-site weather systems, and visual and infrared cameras provide real-time feedback into advanced algorithms for solar field management Proprietary optimization and control software maximizes project performance and power production efficiencies Infrared Camera System 6

7 Solar Field Optimization Field layout simulation calculates optimal heliostat positioning to minimize shading, and maximize heat concentration on solar receiver Coordinated field of heliostats enables system to achieve industry-leading steam temperature and pressure levels 7

8 Solar Receiver Overview Solar Receiver Steam Generator (SRSG) SRSG Infrared Image SBMS Temperature Measurement Solar Receiver Superheater SOLAR RECEIVER STEAM GENERATOR (SRSG) Utility-scale inside out boiler heated by reflected solar radiation Proprietary coatings for maximum solar energy absorption SOLAR BOILER MANAGEMENT SYSTEM (SBMS) Matches steam output to load demand Camera and sensors transmit real-time heat levels to heliostat control system Flexibility to respond rapidly to cloud cover & weather changes 8

9 Power Block: Turbine Overview System produces steam to match high-efficiency turbines Leverages conventional turbine to deliver power with the reliability and power quality characteristics required by utilities and grid operators High temperature and pressure steam (565 C and 160 Bar) take advantage of stateof-the-art turbine efficiencies Future efficiency gains driven by technology roadmap 9

10 Power Block: Air Cooled Condenser Overview Key design parameters: Water Use: dry-cooling, conservation and closed-loop recycling Uses air instead of water to condense steam Dry-cooling requires 90% less water than competing wet-cooled or hybrid systems Power tower: A cost-effective dry-cooling plant Greater power production offsets additional cost per unit electricity Ability to produce higher temperature steam results in smaller efficiency loss By producing and selling more electricity, dry-cooling is an economically viable choice 10

11 Industry-Leading Technology Roadmap IVANPAH POST-IVANPAH UNDER DEVELOPMENT TODAY NEAR TERM LONGER TERM C % MW BAR HRS Increased size drives power block cost effectiveness High temperature and increased pressure drive turbine efficiency and lower costs Additional capacity and storage yield higher efficiency and increased asset utilization 11

12 CSP Technology: Areas of Focus Solar Field - Wireless communication and control - Mirror reflectivity, cleaning and anti-fouling - Heliostat control and accuracy - Improved measurement devices (flux, tracking) - Real-time attenuation measurement and cloud coverage - Weather forecasting, day ahead, hours and immediate Receiver - Advanced selective coatings - Alternative heat transfer fluids - Secondary reflectors Supercritical steam conditions and turbine efficiencies High Efficiency Storage Integration 12

13 Solar Hybrid Applications Fossil Baseload Power Plants We offer three unique solar thermal hybrid power plant configurations for customer specific applications: 1. Solar Boost for supplemental production 2. Solar Add-On for extended production 3. ISCC-Complete Hybridization Integrated Solar Combined Cycle (ISCC) utilizing Alstom s multiple chamber firing Highest efficiency Lowest emissions and fuel consumption Greatest operational flexibility Solar hybridization allows fossil baseload power plants to reduce fossil fuel consumption, air pollutants and other regulated emissions. 13

14 BrightSource Solar Plant With Thermal Energy Storage Extends electricity production into later parts of the day and after sundown, when valued most by utilities Reduces the cost of renewable power: - Increases a plant s capacity factor / higher asset utilization - Offers higher efficiencies than competing solar thermal power plants Provides utilities with greater operational flexibility to shape production to account for variable production of other intermittent resources Offers utilities and grid operators additional operational and market value: - Balancing and shaping capabilities - Ancillary services to support a reliable grid 14

15 Conclusion Proprietary technology produces high-value steam for power, petroleum and industrial process markets worldwide Project development proven at commercial scale Technology roadmap with visibility into significant cost reductions Thoughtful sighting and low-impact development design 15

16 brightsourceenergy.com Proprietary & Confidential 2012 BrightSource Energy, Inc. All rights reserved. 16