solar thermal power plants – firm capacity with 100% ... · greenhouse gas emissions (bmu 2002)...

CUEN 3rd Annual Energy Conference, 22nd June 2009Dr. Henner Gladen, Solar Millennium AG

Solar Thermal Power Plants –Firm Capacity with 100% Renewables

Presentation Solar Millennium AG

History of Parabolic Trough Power Plants

Solar Resources

Andasol 1-3, Worldwide Largest Site for Solar Power Generation

Kuraymat, Combined Cycle Power Plant with Parabolic Trough Solar Field

Market Potential


Each year over 1 billion terawatt hours of solar irradiation arrive on Earth. This corresponds to about 60,000 times of the world's current electricity demand. Thus, solar power has the biggest potential of all renewable energies.

Solar Power is inexhaustible …

Resources


… and delivers the highest yield of energy per square kilometer of all renewable energies

Biomass (1)

Wind (30)

Geothermal (1)

Hydro (30)

Solar (250)

in brackets: (typical yields in GWh/km²y)

Source: DLR

In MENA countries, each km² receives per year solar energy equivalent to 1.5 million barrels of oil.

Resources


The highest potential for Solar Thermal Power Plants is located in the „sun belt“ of the earth

Resources

excellent good acceptable not acceptable

Excellent conditions are available in the Southwest of the USA, South America, North Africa, South Africa, Middle East and Australia


History of Parabolic-Trough Power Plants

Solar Resources



Market Potential


History of Parabolic Trough Power Plants

1907: First patentedin Stuttgart, Germany1912: 55 kW plant

build in Egypt by Frank Shuman

Technology


High oil prices triggered a boom for renewable energies.

Solar thermal power plants provide firm capacity during times of peak demand.

Construction of SEGS* I - IX9 power plants with 354 MW

1.2 Bill. US$ investment

13 TWh power generation

Revenues: more than 2.3 Bill. US$* SEGS = Solar Electricity Generation System

California in the 1980’s

Technology


Parabolic-trough power plants utilize proven technology

Technology

Solar irradiation is concentrated 70-80 times on a receiver tube, which is situated in the focal line of a parabolic-trough mirror; the heat is picked up by a thermo oil, flowing inside the tubes, and transferred to a conventional water/steam cycle with a steam turbine and generator set.

Operation is possible in solar-only or hybrid mode (w/ natural gas co-firing)

Power generation is possible on demand; thermal storage and natural gas co-firing allow power generation independent from actual solar irradiation


Low CO2-emissions and short energy payback periods

Greenhouse gas emissions (BMU 2002)

Technology

CO2-Reduction of an Andasol-type power plant compared to a modern hard coal power plant: 149.000 tCO2/y

Solartherm. power plants: app. 5 monthWindmills: 4 - 7 monthPV in middle europe: 2 - 5 yearsUranium, natural gas, coal, oil: never

Energy Payback Period



Solar Resources



Market Potential


Andasol Parabolic Trough Power Plants

Andasol 1Start of work: June 06; Start of operation: 2008

Technology

Andasol 2

Andasol 1

Andasol 3

Andasol 2Start of work: February 07; Start of operation: 2009

Andasol 3Start of work: Summer 2008; Start of operation: 2011


Characteristic data of Andasol 1-3

Technology

Per power plant:

512.000 m2 collector area (= 70 soccer fields)

Thermal storage for 7.5 baseload hours almost doubles power generation of each plant – about 180 GWh (gross) per year

Electricity for up to 200,000 people with 50 MW steam turbine

149.000 to/y CO2-reduction compared to a modern hard coal power plant

about 300 Mio. Euro investment


View on Parabolic Trough Power Plant Andasol 1

Technology


Process diagram of a Parabolic Trough Power Plant with molten salt heat storage and natural gas co-firing

Solarfield w/ HTF Storage Conventional water-steam cycleHX

Frischdampf: 100 bar/ 380°C

Boiler

Fuel

Technology


Blue Tower technology for biomass gasification

Technology for utilization of regenerative feedstock to generate electricity and hydrogen

Technology enables 24 hour operation of solar-thermal power plants in hybrid mode

Demonstration project in Herten/Germany to prove marketability with financial volume of€ 24.6 million, subsidized by Land North Rhine-Westphalia with € 7.1 million

Capacity: ca. 13 MWth / 5 MWel

Laying of foundation stone on March 5th, 2009

Start of commissioning at the end of 2009

Great potential worldwide

Technology


Andasol - design data of molten salt thermal storage

Ø 38,5 m

14 m

292 °C 386 °C

Technology

• Type: 2-Tank Molten Salt Storage• Storage Fluid: Nitrate salt mixture (60% NaNO3 and 40% KNO3)• Melting Point of Fluid: 223°C• Storage Capacity: 1010 MWh (~7.5 hrs full load operation)• Storage Tank Size: 14 m height

37 m diameter• Salt Mass: 28 500 tons• Flow Rate: 953 kg/s• Cold Tank Temp: 292°C• Hot Tank Temp: 386°C


Integration of a Blue Tower into a Parabolic Trough Power Plant

The Blue Tower provides additional heat to drive the water/steam cycle in times without solar heat input.

Technology

Solar Field Heat Storage Blue Tower Power Block


Solar thermal power plants generate firm capacity during times of system peak load

Distinct peak load during daytime (Δ ~ 16.000 MW)

Power generation of windturbines mainly during night times

Spain: Power consumption and wind generation on a summer day

Technology


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direct normal insolationfrom solar fieldto storagefrom storageto turbinenet electricdumped

Andasol Parabolic Trough Power Plants, Operation with 7.5h thermal storage

direct normal insolation

Loading of storage

Power Generation

Unloading of storage

> 20 hours

Technology



Solar Resources



Market Potential


Kuraymat (Egypt) – combination of a combined cycle power plant with a parabolic trough solar field

Kuraymat – 95 km south of Cairo

Cairo

Technology


Principle project data at a glance

Type: Integrated Solar Combined Cycle (ISCC)Site: Kuraymat, approx. 95 km south of CairoYearly insolation (DNI): approx. 2400 kWh/m²y

Solar fieldCollector area (mirrors): 130.800 m² Collectors: 160 SKAL-ET-150 in 40 LoopsThermal Power: 61 MWth

Combined cycle power plantGas turbines: 2x 40 MWe

Steam turbine: 1x 70 MWe

Technology


Reduction of CO2-Emissions by combination of a combined cycle power plant with a solar field

Solar field with HTF Conventional combined cycle power plant

600°C

Gas turbine(s)

Steamturbine

Condenser

Steam540°C, 100bar

Stack Exhaust100°C

393°C

Electricityto the grid

ParabolicTrough Field

293°C

Air and vapour

Air Air

G

~

HRSG

CoolingTower

Solar HX

G

~Technology


Kuraymat – satellite view of the construction site

Combined cycle

Solar field

Boundary

Technology


Indoor high-precision assembly of collector elements

Technology


Erection of collector supports

Technology


Installation of collectors in the solar field

Technology



Solar Resources



Market Potential


In Spain, the feed-in tariff for renewable energies initiated planning of more than 2150 MW of solar thermal power plants

Market Potential & Development


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Sarasin 2008

Sarasin 2007

Greenpeace/EREC 2007

DoE

IEA min.

IEA max.

Power of solar-thermal plants / MW

Huge potential for market growth

400 power plants

900 Parabolic trough power plants (e.g. Andasol)

Studies

100 power plants

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2010 2020 2030 2040 2050


At the end of 2008, Bank Sarasin has increased its forecasts for 2020 from 16.5 GW accumulated power to 32.0 GW –despite the global economic crisis!


Sites of solar thermal power plants

Sites of other renewable energy power plants

High-voltage-direct-currency (HVDC) transmission lines are necessary for the secure energy supply of Europe



World largest HVDC line under construction in China: Remote hydropower Xiangjiaba - Shanghai

Xiangjiaba Shanghai

Main dataCommissioning year: Pole 1: 2010 Bipole: 2011 Power rating: 6 400 MWNo. of poles: 2 DC voltage: ±800 kV Length of over-head DC line: 2 071 kmLosses: < 7%Main reason for choosing HVDC: Long distance

Source:



Solar Millennium meets the challenges of future power supply

Cost reduction and increased efficiency (e.g. direct steam generation)

Extension of location possibilities (e.g. by using dry cooling)

Electricity production around the clock (e.g. solar / biogas hybrid operation)

Widening the possible field of application (e.g. desalination of sea water)

Continuous development of existing and new technologies



Welcome to the Solar Millennium!


KontaktKontakt Person: Dipl.-Ing. Sven Moormann

(Head of Corporate Communications)

Addresse: Solar Millennium AGNägelsbachstr. 4091052 ErlangenGermanyTel.: +49 9131/9409-0Fax.: +49 9131/9409-111E-Mail: [email protected]/ [email protected]

Disclaimer:The present presentation does not constitute a legally binding offer of participation or for the purchase of shares in the company. It is not to be viewed by the recipient as constituting the subject matter of a contract or as a contractual basis for investment. Only inquiries and assessments carried out by the recipient on his/her own account can form a basis for investment in the company. The presentation has been compiled solely on the basis of the company’s business model and range of services, as well as on market and competitive environment research based on sources available publicly. No guarantee or warranty is provided for the accuracy, precision and completeness or for the interpretation of the data and the commentary, nor is any other form of liability for the content of this presentation acknowledged.Budgeting is based on management assumptions and projections and reflects the market development and market opportunity perspectives at the time of compilation. The nature of the dynamic market environment is such that it is subject to constant changes and can therefore influence this budgeting content. No guarantee is provided for the budgeting feasibility.

mailto:[email protected]

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http://www.solarmillennium.de/

solar thermal power plants – firm capacity with 100% ... · greenhouse gas emissions (bmu 2002)...

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