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1© 2010 Macademia
Session # 6 – November 18, 2010
TODAY’S TOPIC:
Small Hydro Power (and a Wind Interview)
Concept and Contents Copyright Macademia 2010; Copyright on pictures as indicated; no unauthorized use or publication
Picture Copyright: E.ON 2010, no further use allowed without permission
2© 2010 Macademia
Where are we now?
Policy approachesWind Solar PV Funding Solar
ThermalSHP & Wind
Interview
Session # 6 – November 18, 2010
3© 2010 Macademia
What we will cover
• History and Basics of Small Hydropower• Main turbine types and applications• The Renaissance of Small Hydro/Potential• Going back to Wind: Interview with Nico Köllner
Picture Copyright to Thermovolt France S.A.S., no further use allowed without permission
Session # 6 – November 18, 2010
4© 2010 Macademia
Your visiting scholar today:Your visiting scholar today:
Nico Köllner, E.ON Climate & Renewables
Session # 6 – November 18, 2010
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• Definition of Small Hydro• Centuries of Hydropower use• From small turbine applications to large hydro• Main types of systems used
1 The Basics of Small Hydropower
Our Schedule for Today
Session # 6 – November 18, 2010
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• Efficiency and types of turbine systems• Costs depending on system• Locations and Environmental Impact• Potential for Small Hydropower
2 Key Topics in Small Hydropower
Our Schedule for Today
Session # 6 – November 18, 2010
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• The Link to Small Hydropower• From Turbine Sizes to the Location – key factors• Future Challenges
3 A look back to Wind Power
Our Schedule for Today
Session # 6 – November 18, 2010
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A Country
Before we start…
B Data C Business
• What is happening in the Forum?
Session # 6 – November 18, 2010
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• The definition of ‘small hydro’ – no standardization
• Upper Limits from 2.5 MW – 30 MW
• Frequently used: 10 MW capacity
• Substantial impact of “small systems”
1 The Basics of Small Hydropower
Session # 6 – November 18, 2010
10© 2010 Macademia
• A long mechanical tradition –
at different development stages
• Water turbine development in France / 19th century
• 1880s – larger scale electricity generation
• Early 20th century: development of today’s technology
1 Centuries of traditional use
Session # 6 – November 18, 2010
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1 From small applications to Large Hydro
• A tendency to larger units throughout 20th century
• Particularly 1930s to 1970s
• As with other renewables: renewed interest after oil
crises in the 1970s
Session # 6 – November 18, 2010
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1 Main Types of Systems
• High-head system
• Low-head system
• Supplemental systems- irrigation
- drinking water supply
- agricultural purposes
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2 Key Topics: Costs
• Main Components for Small-Hydropower- Engineering Expenditures
- Electrical Equipment / Material used
- Turbine System
• Costs shared very unevenly depending on type of
system used
Session # 6 – November 18, 2010
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2 Key Topics: Costs
• Best Competitiveness- Good site / location with appropriate topography
- Suitable for system with relatively low investment costs
• Wide range of investment costs and availability of
systems
Session # 6 – November 18, 2010
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Session # 6 – November 18, 2010
2 Key Topics: Environmental Impacts
• Potential impacts of Small Hydropower- Impact on ground-water level
- Natural habitat
- Fish migration routes
- Water quality issues
- River flow characteristics
16© 2010 Macademia
Session # 6 – November 18, 2010
2 Key Topics: Environmental Impacts
• Potential impacts of Small Hydropower- Cleaning up garbage
- Enhance water quality
- Green regional energy supply
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0
500
1000
1500
2000
2500
1987 1992 1997 2002 2007 2010
Pow
er p
er U
nit,
kW/U
nit
Leis
tung
pro
Anl
age,
kW
/WE
A
Moving towards optimum capacity of turbines
Source: DEWI, Status der Windenergienutzung in Deutschland, p. 6
18© 2010 Macademia
• Discussion with Nico Köllner, E.ON
3 Interview with our expert
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• Development of Turbine Sizes • Potential for further savings• Repowering with huge potential?• Offshore as the future frontier?• Small decentralized solutions
The big topics in Wind Power
Session # 6 – November 18, 2010
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• Think about a Renewables portfolio for your country
• Which technologies would you recommend?
• Which policy instruments would you use?
...and for next week, please:
Session # 6 – November 18, 2010
21© 2010 Macademia
Your visiting scholar next week:
Alexander Saier United Nations Framework Convention on Climate Change, Cancun (invited, tbc)
Session # 6 – November 18, 2010
