1 / 16

Introduction

Introduction. Concentrating Solar Power for Utility Scale Projects Dr. Fred Morse Chairman, CSP Division, SEIA and Consultant to US Department of Energy. Objectives. To present to the ACC Commissioners a technical overview of Concentrating Solar Power as a utility scale option for Arizona

razi
Download Presentation

Introduction

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Introduction Concentrating Solar Power for Utility Scale Projects Dr. Fred Morse Chairman, CSP Division, SEIA and Consultant to US Department of Energy

  2. Objectives • To present to the ACC Commissioners a technical overview of Concentrating Solar Power as a utility scale option for Arizona • To answer questions about this solar option • To provide background of the WGA Solar Task Force’s recommendations and the Southwestern Utility CSP Consortium

  3. Topics • What is CSP and why should you care? • What is the CSP potential and where are the optimal sites in Arizona? • What does CSP cost today, what is projected for the future, and how credible is that projection? • What is the SW Utility CSP Consortium? • Any benefits to Arizona from CSP deployment? • WGA Solar Task Force policy recommendations.

  4. CSP Options for Large-Scale Power

  5. CSP Technology • Some of these technologies use curved mirrors to focus the sun’s rays and to make steam, others directly produce electricity. • This steam is used to produce electricity via conventional power equipment. • In multi-Megawatt plants, CSP provides the lowest cost solar electricity.

  6. Trough Technology • Trough Collectors (single axis tracking) • Heat-Collection Elements • Heat-transfer oil (Therminol VP1) • Oil-to-water Steam Generator • Oil-to-salt Thermal Storage • Conventional steam- Rankine cycle power block

  7. Operating Central Station Systems • The Solar Energy Generating Systems (SEGS) at Kramer Junction, CA (SEGS III-VII) • Five 30MW hybrid trough plants for a total of 150MW Capacity • Commissioned 1986-1988 • Performance has increased with time • Four additional SEGS plants located in two locations (Daggett, Harper Lake) for combined total of nine plants and 354 MW capacity

  8. CSP Has Worked for California Reliably for 15 Years CA Energy Crisis • Averaged 80% on-peak capacity factor from solar • Over 100% with fossil backup • Could approach 100% from solar with the addition of thermal energy storage. Mount Pinatubo Volcano SCE Summer On-Peak Weekdays: Jun - Sep 12 noon - 6 pm

  9. 1-MW Arizona Trough Plant

  10. 64 MWe Solargenix Solar Electric Plant: Boulder City, NV

  11. 6-Dish/Stirling Prototypes - Sandia

  12. Attributes of CSP • Hedge against NG volatility and carbon caps • LCOE is known and fixed for 30 years • Well suited for utility scale installations of 100+ MW • CSP can provide firm dispatchable output • Utilities understand solar steam generation

  13. Storage provides decouplingof energy collection and generation lower costs because storage is cheaper than incremental turbine costs higher value because power production can match utility needs Value of Dispatchable Power?Meeting Peak Power Demand Hourly Load Solar Resource Generation w/ Storage

  14. Arizona’s CSP potential and optimal sites • CSP requires the direct beam component of the sun’s energy – something that Arizona has a lot of. • CSP also requires currently unproductive flat land – something that Arizona also has a lot of. • Using only the top 20% of the intensity of the solar energy, Arizona’s CSP technical potential in the hundreds of GW – a truly impressive in-state energy resource • Considering transmission access, it is possible to identify many optimal sites in the state • Mark Mehos will elaborate on these points

  15. CSP Cost Today and Tomorrow • Like any utility scale power plant, CSP cost depends on many variables. • If all are favorable, LCOE today is in the mid teens in c/kWh for firm dispatchable power and could drop to the low teens with existing incentives. • Current cost gap is 5-6 c/kWh. • Several independent and credible studies project 8 c/kWh (nominal) after 4GW installed thereby eliminating this cost gap. • Mark Mehos will provide details.

  16. SW Utility CSP Consortium • LCOE is lower from one 250 MW CSP plant than five 50 MW CSP plants in five locations. • 12 SW utilities are exploring some kind of aggregation to realize this benefit. • Seek to gain operational experience with CSP and contribute to cost reduction. • Barbara Lockwood, APS will provide report on status and plans of this group.

More Related