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Asia Pacific Partnership on Clean Development & Climate Brown Coal ( Lignite ) Best Practices Work Shop India - Country Perspective 23-27 th June2008 . NTPC Delegates : I.K.Rajdeva , Additional General Manager, NTPC Ltd .

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Asia Pacific Partnership on Clean Development & Climate

Brown Coal ( Lignite ) Best Practices

Work Shop

India - Country Perspective

23-27 th June2008


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NTPC Delegates :

I.K.Rajdeva, Additional General Manager, NTPC Ltd.

A.Nagasundaram, Dy. Gen. Manager, NTPC Ltd.

Saju K Sebastian, Dy. Gen. Manager, NTPC Ltd.

P.S.Chatterjee, Chief Design Engineer, NTPC Ltd.

CESC Delegates :

Souvik Dutta, Station Manager, Southern generating Station, CESC Ltd .

Kushal Bhowmick,  Senior Manager ( Environment),  CESC Ltd.

THE INDIAN DELEGATION


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Robust Economic Growth – THE DRIVER

THE GDP GREW AT 9.6% DURING FISCAL 2007, AVERAGE RATE OF GROWTH OVER LAST 4 YEARS IS 8.6%.

GDP GROWTH DURING 2008-09 IS EXPECTED TO BE around 9%.

GDP GROWTH TARGET OF 9% SET BY GOVT. DURING XI PLAN (2007-2012).

ELECTRICITY IS AN IMPORTANT INPUT TO THE MARCH OF PROGRESS OF ANY COUNTRY TODAY.

IT IS THEREFORE NATURAL THAT THE GROWTH IN ELECTRICITY GENERATION & AVAILABILITY, BE COMMENSURATE WITH GROWTH IN GDP.


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Existing Generating Capacity- March 2008

Sector wise break-up (MW)

Fuel wise break-up (MW)

(Excluding captive capacity of 14636 MW connected to grid)

(All figures provisional from CEA)

Total generation in 2007-08 – 704.45 BU


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ALL INDIA PLANT LOAD FACTOR (%) - COAL FIRED THERMAL POWER STATIONS


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Energy Shortage

9.8%

9.6%

8.3%

7.3%

7.1%

8.8%

7.5%

7.8%

DURING 2007-08, PEAKING SHORTAGES WERE 16.6%


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Per capita Consumption remains low

In 2006

NATIONAL ELECTRICITY POLICY TARGETS PER CAPITA AVAILABILITY OF 1000 KWH BY 2012

Figures in kwh

Source: UNDP Human Development Report 2007-08 – Data for 2004


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Projected Capacity Requirements

CAGR of 7.3%

778 GW

425 GW

220 GW

132 GW

Source: Integrated Energy Policy GOI

Large Capacity addition required to meet the demand


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CAPACITY ADDITION EXPECTED DURING 11th PLAN (2007-12) (Conventional) – 78,520 MW

Thermal – 59,513MW

( Coal – 51,890 MW, Gas- 5343 MW, Lignite- 2280 MW)

Additional capacity expected : New Renewables – 14,000 MW

: Captive – 12,000 MW


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11TH PLAN PROGRAMME (2007-2012) (Conventional) (Thermal+Hydro+Nuclear)

Proposed : 78,577 MW

Expected : 78,520MW

9,263 MW capacity already commissioned

60,214 MW (77%) under construction

10,950 MW - Letter of awards yet to be placed

Fuel Availability for 96% of coal based stations – tied up

88% hydro capacity under construction /commissioned

All gas based projects under execution or gas tied up from local sources

Additional 13,000 MW gas based projects identified – subject to gas availability


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11TH PLAN PROGRAMME (Conventional) NON-CONVENTIONAL ENERGY PLANTS

  • Installed Capacity (as on 31.03.2008)- 11125 MW

  • 11th Plan target- 14,000 MW consisting of

    • Wind Power - 10,500 MW

    • Biomass PowerBaggasse Co-generation - 2,100 MW

    • Small Hydro (up to 25 MW) - 1,400 MW


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CAPACITY ADDITION DURING XIITH PLAN (Conventional) (2012 - 2017)


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Energy Efficiency (Conventional)

GOVERNMENT’S STRAGTEGY / INITIATIVE FOR EFFICIENCY IMPROVEMENT

NATIONAL THERMAL POWER CORPORATION LTD.

- A PROFILE

Setting the Scene today for a future-oriented Sustainable Energy production


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INDIA’s ENERGY PROGRAMS AND POLICIES (Conventional)

  • Improving energy efficiency

  • Promoting Hydro and renewable energy

  • Power sector Reforms

  • Promotion of Clean coal technology

  • Energy infrastructure Development

  • Coal Washing

  • Environmental Quality Management


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Demand of power is set to grow with growing economy (Conventional)

Large capacity needs to be added to meet the projected growth in demand

With Electricity Act 2003 coming into vogue, the power market is set to attract a lot of investors and competition

With tariff based bidding becoming a norm, utilities have to bring down their cost of generation to remain competitive

Increased emphasis on Environmental considerations for clean technology

CDM opportunities arising out of global warming concerns

Fuel, Land & Water availability becoming more and more difficult

Efficiency enhancement feasible in future plants as well as existing plants

DRIVERS FOR HIGHER PLANT EFFICIENCY


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Improvement in efficiency and performance of existing generating units through :

Renovation and Modernisation schemes with emphasis on Energy Efficiency

Partnership in excellence.

Establishment of Energy Efficiency cells at thermal power stations ( 37 cells in operation)

Energy Conservation through legislation

Thermal Power Stations notified as Designated consumers

Promotion of Renewable Energy Sources

15,627 MW Capacity of Hydro Power planned in XIth Plan

30,000 MW Capacity of Hydro Power planned in XIIth Plan

Retiring 5000 MW old capacity with low efficiency in 11th Plan

Major Initiatives ……


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Designated Consumers Notified generating units through :

Thermal Power Station

Appoint Energy Manager

Get Energy Audits conducted by Accredited Energy Auditors

Implement techno-economic viable recommendations given by Accredited Energy Auditor

Comply with norms of specific energy consumption fixed

Submit report on steps taken

Major Initiatives …..

Energy Conservation Act 2003 (EC Act)


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Adoption of Clean Coal Technologies generating units through :

Supercritical / Ultra supercritical Technology

Circulating fluidized bed combustion (CFBC)

Integrated Gasification Combined Cycle (IGCC) Suitable for Indian Coal

Presently Working to develop a Demonstration Project for IGCC along with suitable Partner, development of core technologies for gasifier & Gas cleaning systems suitable for High Ash Indian Coal.

Major Initiatives……


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Ultra Mega Power Projects(4000MW capacity) based on Supercritical Technology at various pithead and coastal locations.Envisaging Mandatory Higher size thermal units (660/800 MW) with Supercritical Parameters.

It is estimated to commission

10 Nos. units of 660MW (XIth Plan)

2 Nos. units of 800MW (XIth Plan)

12 Nos. units of 660MW (XIIth Plan)

31 Nos. units of 800MW (XIIth Plan)

Major Initiatives …..


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Major Initiatives ….. Supercritical Technology at various pithead and coastal locations.

  • Supercritical Units of 660 MW Rating under construction

  • Supercritical Units of 800 MW Rating with higher steam temperature conditions under consideration


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43% Supercritical Technology at various pithead and coastal locations.

42%

320/600/620

(800-1000 MW)

280/600/620

(800-1000 MW)

41%

247/565/593

(660/800 MW)

Gross Efficiency, GCV Basis

40%

247/537/565

(660 MW)

39%

170/537/537

(500 MW)

38%

‘00

‘02

Xth Plan

XIth Plan

‘12

XIIth Plan

‘17

XIIIth Plan

‘22

‘07

The Efficiency Roadmap


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The reported efficiency of Indian power plants is generally lower as compared to efficiency of plants abroad, primarily due to :

Poorer condenser vacuum due to hot climatic conditions

Higher unburnt carbon losses in boiler due to low grade high ash Indian coal

Efficiency is reported on HHV basis of coal (same as the practice followed in USA) as against LHV used elsewhere.

Lower Plant Efficiency in India

Typical variation due to above = 3.0 to 4.0 % points (Approx.)


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Heatrate Improvement over the Years lower as compared to efficiency of plants abroad, primarily due to :


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Member of Carbon Sequestration Leadership Forum (CSLF) lower as compared to efficiency of plants abroad, primarily due to :

Participating in FutureGen Project of USA

275 MW coal fired Zero Emission power plant

India contributing US$10 Million

Participating in Asia Pacific Partnership (APP) for Clean Development and Climate

The Indian Project Proposals in the TF Action plan

Inputs like case studies & contact details of experts in areas of India’s interest.

Work on Efficiency improvement of two thermal power plants namely Ropar and Kolaghat thermal Power station already started with support of USAID.

Major Initiatives Contd …..


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Major Initiatives ….. lower as compared to efficiency of plants abroad, primarily due to :

  • Mapping of Thermal Power Stations under Indo-German Programme

    • 33 thermal units mapped ( 31 thermal stations)

    • 85 Thermal Power Stations targeted

  • Energy Conservation Awards

  • National Award for improving performance of Thermal Power Stations

  • Awards for reducing T & D losses.


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    Efficiency Improvement through lower as compared to efficiency of plants abroad, primarily due to : Renovation and Modernization

    A COST EFFECTIVE APPROACH ……

    CONTINUE GETTING THE BEST OUT OF EXISTING FLEET


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    Improvement in performance parameters – PLF, Availability, heat rate/efficiency, auxiliary power consumption, partial loading & forced outage.

    Restore derated capacity

    Extension of economic life.

    Obsolescence & non availability of spares (eg C&I)

    Environmental issues/other statutory requirements.

    Safety requirements.

    NEED FOR R&M – EXISTING UNITS


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    A large number of 200/250 MW & some 500 MW Units are in operation for more than 15/20 years and have considerable potential for life extension & efficiency improvement

    POTENTIAL FOR EFFICIENCY INTEGRATED R&M


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    Shift in focus from ‘Generation Maximization to ‘Plant Performance Optimization’ – Older units have many more opportunities to reduce heat rate than newer units.

    Retirement of very old small size low efficiency units and replacement with higher efficiency units.

    Use of high end technology solutions for efficiency enhancement to manage rising costs & reduce carbon, foot prints, e.g.,

    Steam flow path modification

    Steam turbine and boiler upgrades

    Improved plant control

    FUTURE APPROACH TOWARDS R&M


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    Additionality in efficiency improvement Performance Optimization’ – Older units have many more opportunities to reduce heat rate than newer units.

    Efficiency improvement as a result of normal R&M, aims at to minimising losses ( to approach design values)

    Efficiency improvement through technology intervention/enhanced R&M, targeting efficiency enhancement even beyond design value.

    FUTURE APPROACH TOWARDS R&M …


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    Parameters For Performance Monitoring Performance Optimization’ – Older units have many more opportunities to reduce heat rate than newer units.

    • Unit Heat Rate

    • Unit Auxiliary Power consumption

    • Unit Specific secondary fuel oil consumption

    • Unit Specific coal consumption

    • Plant Load Factor (PLF)

    • Planned Maintenance, Forced outage and Operating availability


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    Projects for the Task Force Performance Optimization’ – Older units have many more opportunities to reduce heat rate than newer units.


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    Fly Ash Utilization Record – NTPC Performance Optimization’ – Older units have many more opportunities to reduce heat rate than newer units.AS A SAMPLE CASE ONLY


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    Forest Banks concept Performance Optimization’ – Older units have many more opportunities to reduce heat rate than newer units.

    NTPC has created a Green wealth of 18.2 Million Trees by Summer 2007

    Plantation of 1.25 Million trees around Ramagundam Project has resulted in Summer Peak temperature reduction by 3 deg C

    Ash Mound Reclamation and Dry ash disposal system

    Afforestation Efforts – A Priority for sustenance of HUMANITY!!


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    THANK YOU Performance Optimization’ – Older units have many more opportunities to reduce heat rate than newer units.


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