1. 1© 2010 Macademia
Session # 5 – November 11, 2010
TODAY’S TOPIC:
Solar Thermal Power
Concept and Contents Copyright Macademia 2010; Copyright on pictures as indicated; no unauthorized use or publication
Picture Copyright to Nur Energie., no further use allowed without permission

2. 2© 2010 Macademia
Where are we now?
Kick-Off Wind Solar PV Funding
Solar
Thermal
SHP & other
Renewables
Session # 5 – November 11, 2010

3. 3© 2010 Macademia
What we will cover
• The basics to Solar Thermal Power
• Early installations and current projects
• Examples from practice – the expert interview
• Your views and questions
Session # 5 – November 11, 2010

4. 4© 2010 Macademia
Your visiting scholar today:
Dr. Till Stenzel, Nur Energie, Great Britain
Session # 5 – November 11, 2010

5. 5© 2010 Macademia
• A Brief History of Solar Thermal
• Which technologies are on the market?
• Which regions are most suitable to Solar Thermal?
11 The Basics to Solar Thermal
Our Schedule for Today
Session # 5 – November 11, 2010

6. 6© 2010 Macademia
• Efficiency
• Hybrid Applications
• Storage
• Costs
212 Big topics in Solar Thermal
Our Schedule for Today
Session # 5 – November 11, 2010

7. 7© 2010 Macademia
• Current projects by Nur Energie in Northern Africa
• Major aspects of these projects; critical issues
• Interview with Dr. Till Stenzel
• Questions by participants
3 Examples from practice
Our Schedule for Today
Session # 5 – November 11, 2010

8. 8© 2010 Macademia
A Country
Before we start…
B Data
C Business
• Have you visited the forum?
Session # 5 – November 11, 2010
• Information from your country; on national
approaches, Renewables investments,…
• Statistics on Renewables, Analyses, Reports
• Try to find partners worldwide
• Get advice on projects, jobs, et cetera

9. 9© 2010 Macademia
• The basic difference to PV
• High direct normal insolation
• Sunlight being concentrated to produce heat
• Direct steam generation or fluid with heat exchanger
• Turbine driving a generator to produce electicity
11 The Basics to Solar Thermal
Session # 5 – November 11, 2010

10. 10© 2010 Macademia
• Rooted in France in the 1860s: solar-powered steam engine
• 45 kW trough plant in Egypt in the early 1900s
• Energy crises of 1970s spurred commercial development
• Development of Power Towers in the 1980s
11 A Brief History
Session # 5 – November 11, 2010

11. 11© 2010 Macademia
11 The Main Technologies
Session # 5 – November 11, 2010
• Large variety of versions available
• Key difference: stand-alone or grid-connected stations
• Fossil hybrid and thermal storage versions
• Most common versions:
- Solar Dish
- Trough
- Power Tower

12. 12© 2010 Macademia
12 Big topics in Solar Thermal
Session # 5 – November 11, 2010
• Efficiency
- Theoretically: Tower and Dish systems superior to Trough
- Solar-to-electric efficiency with contrast between laboratory and
marketplace
- Stirling Dish engine with record efficiency
- Recent takeover by Power Tower generation under development

13. 13© 2010 Macademia
12 Big topics in Solar Thermal
Session # 5 – November 11, 2010
• Hybrid applications
- Advantage e.g. over Wind and PV: Thermal nature of the
generation process
- Hybrid versions to draw upon same turbine / generator system

14. 14© 2010 Macademia
12 Big topics in Solar Thermal
Session # 5 – November 11, 2010
• Storage
- Availability on demand without hybridisation
- Cost advantage possible with efficient storage system
- The molten salt technology and its implications for the most
efficient systems

15. 15© 2010 Macademia
12 Big topics in Solar Thermal
Session # 5 – November 11, 2010
• Costs
- Relatively high operating expenditures
- Locations crucial – particular with high direct insolation
- Esp. from 1500 kWh / year onwards
- Arid or Semi-arid regions; ≠ tropics

16. 16© 2010 Macademia
13 Major aspects in these projects
• Location is key
• Funding / Financing approach
• Technological Expertise
Session # 5 – November 11, 2010

17. 17© 2010 Macademia
• Discussion with Dr. Till Stenzel, Nur Energie
3213 Interview with our expert
Session # 5 – November 11, 2010

18. 18© 2010 Macademia
• Continue the discussion in the forum
• Have you been in contact with Solar Thermal projects?
• Share your experience and opinion on this technology.
• What do you think of DeserTec and similar initiatives?
...and for next week, please:
Session # 5 – November 11, 2010

19. 19© 2010 Macademia
Your visiting scholar next week:
Nico Köllner E.ON Climate & Renewables
Session # 5 – November 11, 2010