Bernhard Hoffschmidt, Direktor Institute of Solar … · Energy in the future Bernhard Hoffschmidt,...
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Energy in the future
Bernhard Hoffschmidt, Direktor Institute of Solar Research, DLR
Jürgen Kern, System Analyst, DLR
CabWire 2017
Düsseldorf, 07.11.2017
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DLR
German Aerospace Center
Research Institution
Space Agency
Project Management Agency
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Energy
DLR
• Solar
• Wind
• Thermal & Chemical Storage
• Fuel Cells
• Gas Turbines
• System Analyses
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Content
• Agglomeration of the world population
• Growth of MegaCities
• Decentralized regenerative supply of MegaCities
• Regenerative resource versus location of MegaCities
• Centralized supply (Regenerative Hotspots) of MegaCities: example Beijing
• 100% security of supply by „Regenerative Hotspots“
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Interesting facts
▪ In 1800, only 3% of the world's population lived in cities
▪By the end of the 20th century, 47% lived in cities
▪ In 1950, there were 83 cities with populations exceeding one million
▪ In 2007, this number had risen to 468
▪ If the trend continues, the world's urban population will double every 38
years
▪The UN forecasts that today's urban population of 3.2 billion will rise to
nearly 5 billion by 2030, when three out of five people will live in cities.
▪http://en.wikipedia.org/wiki/Megacity
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Istanbul 2010
Istanbul 2000
Istanbul 1990
Istanbul 1975
Deutsches Fernerkundungsdatenzentrum
Taubenböck H, Esch T, Felbier A, Wiesner M, Roth A, Dech S (2012): Monitoring of mega cities from space. Remote Sensing of Environment, vol. 117, pp. 162-176.
Urban Growing DLR.de • Chart 6
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Taubenböck H, Esch T, Felbier A, Wiesner M, Roth A, Dech S
(2012): Monitoring of mega cities from space. Remote
Sensing of Environment, vol. 117, pp. 162-176.
Shanghai 2010
Shanghai 2000
Shanghai 1990
Shanghai 1975
Urban Growing DLR.de • Chart 7
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MegaCities
Deutsches Fernerkundungsdatenzentrum
8 / 18
Taubenböck H (2015): Ohne Limit? Das Flächenwachstum der
Megacities. SpringerSpektrum. S. 49-58.
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Relative Grow-rate in size of MegaCities
~ 1975
~ 1990
~ 2000
~ 2010
Deutsches Fernerkundungsdatenzentrum
Taubenböck H (2015): Ohne Limit? Das Flächenwachstum
der Megacities. SpringerSpektrum. S. 49-58.
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Europe – Afrika - Amerika • Asia
MegaCities
▪Moscow 17
▪London 14
▪Paris 12
▪Rhine-Ruhr 11
▪Istanbul 15
▪Lagos 21
▪Cairo 19
▪Kinshasa 13
▪New York City 24
▪Mexico City 22
▪Los Angeles 19
▪São Paulo 21
▪Buenos Aires 17
▪Rio de Janeiro 14
▪ Tokyo-Yokohama 38
▪ Jakarta 30
▪ Seoul 26
▪ Delhi 26
▪ Shanghai 25
▪ Karachi 24
▪ Beijing 22
▪ Mumbai 21
▪ Osaka 20
▪ Manila 20
▪ Dhaka 18
▪ Bangkok 15
▪ Kolkata 15
▪ Tehran 13
▪ Guangzhou 13
▪ Shenzhen 12
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• Positive - Opportunities • Negative - Challenges
Attributes of MegaCities
1. higher probability of social rise up
2. arts and culture atmosphere/events/
3. opportunities
4. educational opportunities
5. higher qualified jobs
6. higher paying jobs/economic opportunities
7. ..
8. .
1. trash pollution
2. slums
3. traffic congestion
4. water pollution
5. lack of basic needs – electricity/water
6. civil unrest
7. housing shortages/homelessness
8. transportation
9. political fighting
10. lack of basic sanitation
11. pollution of beaches and natural resources
12. inadequate infrastructure (roads)
13. public transportation
14. air pollution
15. lack of recreation areas
16. health risks/diseases
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Tokyo, Japan
Current population = 36.7 million
Estimated population 2025 = 37.1 million
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Delhi, India
Current population = 22.2 million
Estimated population 2025 = 28.6 million
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Mexico City, Mexico
Current population = 19.5 million
Estimated population 2025 = 20.7 million
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New York City
Current population = 20.4 million
Estimated population 2025 = 20.6 million
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Sao Paulo, Brazil
Current population = 19.9 million
Estimated population 2025 = 23.7 million
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Dhaka, Bangladesh
Current population = 14.6 million
Estimated population 2025 = 20.9 million
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Calcutta, India
Current population = 15.6 million
Estimated population 2025 = 20.1 million
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2050 around 75% of the world population
lives on less than 2,8% of the world
surface!
But: Could MegaCities supply their own
electricity?Taubenböck H (2015): Ohne Limit? Das Flächenwachstum der
Megacities.
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Could MegaCities Supply their own Electricity?
• wind energy not possible
• solar thermal power plant CSP not possible
• PV possible but limited
Source : Google Earth
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New York City, Manhattan
Source : Google Earth
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New York City, Manhattan
usable city area
• max. 30%
• Realistic according to a study
by the TU Berlin for the
Greater Berlin is app. 10-20%
(Source: www.pvupscale.org)
Source : Google Earth
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Example Beijing
• Future MegaCity Beijing with
130 million inhabitants
• Today's electricity demand >100TWh/a
• Today’s area of the city
• App. 470 km2
• 25000 people/km2 (value: Manhattan)
• and 11,8 Mio inhabitants
• Maximum own production by 20% usage of
city area for PV: 14,2 TWh/a
In highly condensed metropolitan areas only
a maximum of 15% of the electricity requirement
can be generated itself?
Source: DPA, Beijing at night
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Solar Potential
Source: DLR
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Regenerative resource versus location of MegaCities
Quelle: DLR
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Quelle: DLR
Solare Hotspots versus MegaCities
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Solar Hotspot of Beijing
Source: DLR
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Solar Hotspot:
▪ In the north of Hohhot(Sanyuanjingxiang)
▪ Longitude: 112.11° East
▪ Latitude: 41.65° North
▪ Height: 1685m
▪ Solar Resource 2227 kWh/a
▪ Distance to Beijingapp. 420 km
28Quelle: SWERA, 40 km Resolution by NREL
Solar Hotspot for Beijing
Source: IA Tech GmbH, study 2013
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Solar Thermal Power Plants with Storage
Solar thermal power plants (CSP) with Storage and possible fossil backup
can deliver 100% security of supply
2000 h
+2000 h
>95 %
= 75%
200 h
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6 €cent/kWh for CSP Electricity
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▪ Scenario I: 20% CSP
▪ Salt 100 33 plants 325 km² 18 x 18 km²
▪ Salt 100 117 plants 1137 km² 34 x 34 km²
▪ Scenario II: 70% CSP
▪ Transmission losses
▪ 2,25%
Quelle: LEONI / IA Tech Studie 2013
Solar Hotspot for Beijing
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SummerWinter
Regenerative Hotspot (100% regenerative and 100% Security of Supply)
Quelle: Fallstudie TU Berlin
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Conclusion
• Observation of a massive concentration of the world population in agglomerations and at the same time
depopulation of the countries => MegaCities > 100million Population
• Reason: higher probability of social rise up
• Expected concentration of 75% of the world population on less than 2.8% of land area in 2050
• Electricity supply of the agglomerations/Megacities by "solar or regenerative hotspots" while ensuring 100%
security of supply
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Contact
Bernhard Hoffschmidt [email protected] +49 2203 601 - 3200
Jürgen Kern [email protected] +49 711 6862 - 8119
Tobias Fichter [email protected] +49 711 6862 - 779
Dr. Massimo Moser [email protected] +49 711 6862 - 334
Dr. Franz Trieb [email protected] +49 711 6862 - 423
www.DLR.de/tt/system
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