BEST PRACTICES OF HYDROPOWER DEVELOPMENT

BEST PRACTICES OF BEST PRACTICES OF HYDROPOWER DEVELOPMENTHYDROPOWER DEVELOPMENT

In the perspective of the state of WB


• Government of India has accorded high priority Government of India has accorded high priority to hydro power development with a view to to hydro power development with a view to harness economical and environment benign harness economical and environment benign power for the country especially to meet the power for the country especially to meet the peaking demand. peaking demand.

• Hydropower potential in the countryHydropower potential in the country 1,50,000 MW 1,50,000 MW • Hydropower harnessed so far 37,000 MW (25%)Hydropower harnessed so far 37,000 MW (25%)• The desirable hydro thermal mix 40:60 The desirable hydro thermal mix 40:60 • Ratio all over the country 25 : 75 onlyRatio all over the country 25 : 75 only• The figure in our state of West Bengal The figure in our state of West Bengal

represents a sorry state being as low as represents a sorry state being as low as 3 : 973 : 97..


• Fast dwindling resources of fossil fuel Fast dwindling resources of fossil fuel today, today, at the rate that is at the rate that is 100,000 times faster than they 100,000 times faster than they are being formedare being formed. . and threat of global and threat of global warming and climatic disorder, this ratio warming and climatic disorder, this ratio even puts a big question mark to the even puts a big question mark to the survival of mankind in this planet.survival of mankind in this planet.

• The development of non-conventional The development of non-conventional sources (solar, wind, tidal etc.) appears to sources (solar, wind, tidal etc.) appears to take miles to go to become a viable take miles to go to become a viable alternative. How far are we ready to meet alternative. How far are we ready to meet the challenge in our state ?the challenge in our state ?


Supply of Coal in India ( mt) Supply of Coal in India ( mt)

2005-062005-06 2006-2006-0707

2007-2007-0808

Domestic Domestic SourcesSources

407407 431431 456456

ImportsImports 3939 4343 5050

Total SupplyTotal Supply 446446 474474 506506


Demand-Supply Gap in India (mt)Demand-Supply Gap in India (mt)

YearYear Demand-Supply GapDemand-Supply Gap

2002-032002-03 2222

2003-042003-04 2323

2004-052004-05 2424

2005-062005-06 4949

2006-072006-07 5454

2007-082007-08 3030

2008-092008-09 5858


So Are We Caring Enough So Are We Caring Enough For HydropowerFor Hydropower

? ? ?? ? ?Are We Caring Enough Are We Caring Enough

For OurselvesFor Ourselves


• Like every applied subjects understanding the scenario of hydro Like every applied subjects understanding the scenario of hydro power centres round the following fundamental questions :power centres round the following fundamental questions :

• WHY ?WHY ? -- WHY HYDRO POWER ?WHY HYDRO POWER ?• WHAT ?WHAT ? -- WHAT IS HYDRO POWER ?WHAT IS HYDRO POWER ?• WHO ?WHO ? -- WHO SHOULD DEVELOP HYDROPOWER ?WHO SHOULD DEVELOP HYDROPOWER ?

• WHEN ?WHEN ? -- WHEN TO DEVELOP HYDRO POWER ?WHEN TO DEVELOP HYDRO POWER ?• WHERE ?WHERE ? -- WHERE TO DEVELOP HYDROPOWER ?WHERE TO DEVELOP HYDROPOWER ?• HOW ?HOW ? -- HOW TO DEVELOP HYDRO POWER ?HOW TO DEVELOP HYDRO POWER ?

• The answers are sought in the foregoing sections.The answers are sought in the foregoing sections.


From water to watts :From water to watts : Hydro-electric Hydro-electric power plants convert the power plants convert the kinetic energykinetic energy contained in falling water contained in falling water into electricityinto electricity..

Stages of energy transformation :Stages of energy transformation : FFalling water is chanellised through a vertical alling water is chanellised through a vertical distance to a turbine which converts kinetic distance to a turbine which converts kinetic energy of water into mechanical energy. the energy of water into mechanical energy. the generator coupled with the turbine converts generator coupled with the turbine converts mechanical energy into useful electrical mechanical energy into useful electrical energy.energy.


• Range of plant sizes :Range of plant sizes : hydro-electric hydro-electric power plants generate energy ranging from power plants generate energy ranging from a a few kwfew kw, enough for a single residence, to , enough for a single residence, to thousands of MW, power enough to supply a thousands of MW, power enough to supply a large city.large city.

• Engineering aspects :Engineering aspects : Hydropower Hydropower engineering encompasses many branches of engineering encompasses many branches of engineering and other disciplines of engineering and other disciplines of engineering and other disciplines for the engineering and other disciplines for the purpose of hydropwer development.purpose of hydropwer development.


•Engineering aspects :Engineering aspects : Civil engineeringCivil engineering needed for site selection needed for site selection

depending upon hydrology, hydraulic studies depending upon hydrology, hydraulic studies etc. and then for design & construction of dam, etc. and then for design & construction of dam, water conductor system, power house etc. water conductor system, power house etc.

Mechanical engineeringMechanical engineering involved in the design, involved in the design, manufacture & selection of the turbines, manufacture & selection of the turbines, bearings, valves, gears, governors etc. needed bearings, valves, gears, governors etc. needed to convert hydraulic to mechanical energy. to convert hydraulic to mechanical energy.

Electrical engineeringElectrical engineering involved in design, involved in design, manufacture & selection of generators, control manufacture & selection of generators, control systems, switchgears, transformers etc. Besides systems, switchgears, transformers etc. Besides environmental impacts and economic analysis environmental impacts and economic analysis are performed by respective professionals.are performed by respective professionals.

BEST PRACTICES OF BEST PRACTICES OF HYDROPOWER DEVELOPMENTHYDROPOWER DEVELOPMENT• 250 BC :250 BC : The first recorded use of water power The first recorded use of water power

was a clockwas a clock

• Since that time human beings have used falling Since that time human beings have used falling water to provide power for grain and saw mills water to provide power for grain and saw mills

• 1882 AD :1882 AD : The first use of moving water to The first use of moving water to produce electricity was a waterwheel on the fox produce electricity was a waterwheel on the fox river in wisconsin in, two years after Thomas river in wisconsin in, two years after Thomas Alva Edison invented the incandescent light Alva Edison invented the incandescent light bulb.bulb.

• The first of many hydroelectric power plants at The first of many hydroelectric power plants at niagara falls was completed shortly thereafterniagara falls was completed shortly thereafter

• 1897 AD :1897 AD : The first hydroelectric power plant in india and The first hydroelectric power plant in india and probably in asia too at Sidrapong, Darjeeling with the probably in asia too at Sidrapong, Darjeeling with the installation of 3 units of 65kw capacity eachinstallation of 3 units of 65kw capacity each


• Hydro development is not a under shed Hydro development is not a under shed

job job

• Its expanse is vast under the sky. In Its expanse is vast under the sky. In

fact fact nature like hills, river etc are parts nature like hills, river etc are parts

of the projectof the project rather than machineries rather than machineries

• Hydro power stabilizes grid which is Hydro power stabilizes grid which is

predominantly thermal based.predominantly thermal based.


P P == C C xx Q Q xx HH


The gross average annual energy (E in kWh) is a function

E = f (Q median, Hn, turbine, generator, gearbox, transformer, g,h)

Where:Qmedian = flow in m3/s for incremental steps on the flow

duration curveHn = specified net headturbine = turbine efficiency, a function of Qmediangenerator = generator efficiencygearbox = gearbox efficiencytransformer = transformer efficiencyh = number of hours for which the specified flow occurs.


inherent inherent advantagesadvantages

• INSTANTANEOUS START / STOPINSTANTANEOUS START / STOP

• PEAKING POWER FACILITYPEAKING POWER FACILITY

• ZERO FUEL COST, SO LOW O&M COSTZERO FUEL COST, SO LOW O&M COST

• HIGH EFFICIENCYHIGH EFFICIENCY

• Non-polluting & environment-friendlyNon-polluting & environment-friendly

• RENEWABLERENEWABLE

• EASY MAINTENANCEEASY MAINTENANCE

• MULTIPURPOSE PROJECTMULTIPURPOSE PROJECT

BEST PRACTICES OF BEST PRACTICES OF HYDROPOWER DEVELOPMENT HYDROPOWER DEVELOPMENT


CONSTRAINTSCONSTRAINTS

• LONG GESTATION PERIODLONG GESTATION PERIOD

• HIGH CAPITAL INTENSIVEHIGH CAPITAL INTENSIVE

• HIGH COST TRANSMISSION LINESHIGH COST TRANSMISSION LINES

• REHABILITATION & RESETTLEMENT REHABILITATION & RESETTLEMENT (R&R)(R&R)

• INTER-STATE ISSUESINTER-STATE ISSUES


CONSTRAINTSCONSTRAINTS

• LAND ACQUISITIONLAND ACQUISITION

• POOR INFRASTRUCTUREPOOR INFRASTRUCTURE

• FOREST & ENVIRONMENT CLEARANCESFOREST & ENVIRONMENT CLEARANCES

• SHORTAGE OF GOOD CONTRACTORSSHORTAGE OF GOOD CONTRACTORS• FIXED TARIFF FOR ALL PROJECTS FIXED TARIFF FOR ALL PROJECTS

IRRESPECTIVE OF IRRESPECTIVE OF INFRASTRUCTURE COSTINFRASTRUCTURE COST


Major componentsMajor components

•Intake structureIntake structure

•Desilting chamberDesilting chamber

•Head race channelHead race channel

•Surge tankSurge tank

•PenstockPenstock


• Power housePower house Main inlet valveMain inlet valve Spiral case & wicket gatesSpiral case & wicket gates Draft tubeDraft tube TurbineTurbine GeneratorGenerator GovernorGovernor Auxiliaries & station servicesAuxiliaries & station services Switchgear, control & relaying Switchgear, control & relaying Tail race channelTail race channel


Classification of Hydraulic MachinesClassification of Hydraulic Machines

• according to the type of flow of wateraccording to the type of flow of water

Axial flow turbinesAxial flow turbines Radial flow turbinesRadial flow turbines Tangential flow turbinesTangential flow turbines


Classification of Hydraulic MachinesClassification of Hydraulic Machines

• according to the type of flow of wateraccording to the type of flow of water

Axial flow turbinesAxial flow turbines Radial flow turbinesRadial flow turbines Tangential flow turbinesTangential flow turbines


Classification of Hydraulic Classification of Hydraulic MachinesMachines

• according to the action on fluidaccording to the action on fluid

IMPULSE turbinesIMPULSE turbines REACTION turbinesREACTION turbines


Classification of Hydraulic Classification of Hydraulic MachinesMachines

• according to the action on fluidaccording to the action on fluid

IMPULSE turbinesIMPULSE turbines REACTION turbinesREACTION turbines

CONSTRUCTIONCONSTRUCTION

• Present trend of contract for project implementation Present trend of contract for project implementation

calls for the Quality Management of Hydro Power calls for the Quality Management of Hydro Power

Construction on E.P.C. (Engineering, Procurement and Construction on E.P.C. (Engineering, Procurement and

Construction) contract basis which needs few dedicated Construction) contract basis which needs few dedicated

quality engineers. quality engineers.

• E.P.C. attracts big houses of hydro power developers E.P.C. attracts big houses of hydro power developers

and thus quick and hassle - free hydro development is and thus quick and hassle - free hydro development is

possible.possible.

• Existing hydro stations constructed forty years ago Existing hydro stations constructed forty years ago

could even produce highest generation on 37th year.could even produce highest generation on 37th year.

BENIFITS AND SOME STATISTICSBENIFITS AND SOME STATISTICS

• Jaldhaka and Rammam Hydel Projects hailed as Jaldhaka and Rammam Hydel Projects hailed as one of the 36 Power Stations of India having more one of the 36 Power Stations of India having more than 99% operating availability during 2002 – than 99% operating availability during 2002 – 2003 and 2003 – 2004 as per C.E.A. (Central 2003 and 2003 – 2004 as per C.E.A. (Central Electricity Authority) publication.Electricity Authority) publication.

• Important social contribution for upliftment of Important social contribution for upliftment of rural mass.rural mass.

• So far Hydro Potential identified in conventional So far Hydro Potential identified in conventional sector accounts for 1150 MW (approx.) including sector accounts for 1150 MW (approx.) including 90 MW of SHPs . Besides, there is 4000 MW 90 MW of SHPs . Besides, there is 4000 MW identified pump storage potential.identified pump storage potential.

BENIFITS AND SOME STATISTICSBENIFITS AND SOME STATISTICS • So far 172.5 MW of Hydro potential in conventional sector So far 172.5 MW of Hydro potential in conventional sector

is harnessed.is harnessed.

• 900 MW under Pumped Storage mode is on the verge of 900 MW under Pumped Storage mode is on the verge of completion.completion.

• Hydro potential under implementation stage on BOOM Hydro potential under implementation stage on BOOM basis is 436 MW ( 120 MW of RHP-III + 292 MW of TLDP-III basis is 436 MW ( 120 MW of RHP-III + 292 MW of TLDP-III & IV + 24 MW of Balason HP).& IV + 24 MW of Balason HP).

• Hydro potential under DSI stage is 231 MW (30 MW of Hydro potential under DSI stage is 231 MW (30 MW of Rammam Ultimate+ 40 MW for TLDP-I + 60 MW for TLDP-II Rammam Ultimate+ 40 MW for TLDP-I + 60 MW for TLDP-II + 50 MW of Torsha HP + 48 MW of Raidak HP + 3 MW of + 50 MW of Torsha HP + 48 MW of Raidak HP + 3 MW of Pedong SHP).Pedong SHP).


• Hydro potential to be taken up for investigation is 180 Hydro potential to be taken up for investigation is 180

MW (150 MW of TLDP Intermediate between Rongpo MW (150 MW of TLDP Intermediate between Rongpo

and Melli on Teesta River + 30 MW of Rongpo HP).and Melli on Teesta River + 30 MW of Rongpo HP).

• 15% of the identified conventional Hydro-potential has 15% of the identified conventional Hydro-potential has

been harnessesd so far ( SHP included).been harnessesd so far ( SHP included).

• 37.74% of identified conventional Hydropotential taken 37.74% of identified conventional Hydropotential taken

up for implementation.up for implementation.

BENIFITS AND SOME STATISTICSBENIFITS AND SOME STATISTICS • 20.08% of identified 20.08% of identified

conventional conventional Hydropotential taken up Hydropotential taken up for investigation.for investigation.

• 15.65% of identified 15.65% of identified conventional conventional Hydropotential remains Hydropotential remains to be taken up for to be taken up for investigation.investigation.

• 5.8% of total 5.8% of total conventional potential conventional potential (30 SHPs with total (30 SHPs with total capacity of 66.70MW) is capacity of 66.70MW) is under private developers under private developers through WBREDAthrough WBREDA

15.00%

5.73%

5.80%

15.65%

20.08%

37.74%


On action has still been taken regarding the 5.73 On action has still been taken regarding the 5.73

% of the Identified potential . These mainly % of the Identified potential . These mainly

consists of low head canal fall development on consists of low head canal fall development on

existing and proposed irrigation canals and few existing and proposed irrigation canals and few

SHP 's on hilly rivers.SHP 's on hilly rivers.

IMPORTANT POINTS OF HYDRO IMPORTANT POINTS OF HYDRO DEVELOPMENT.DEVELOPMENT.

• Long gestation time of development. Thus needing application of modern Long gestation time of development. Thus needing application of modern management practice (e.g. System design technique in construction).management practice (e.g. System design technique in construction).

• Establishment of strong contract cell.Establishment of strong contract cell.

• Systematic development of human resources through systematic study/training in Systematic development of human resources through systematic study/training in the field of hydro-power to enrich the personnel working in the field.the field of hydro-power to enrich the personnel working in the field.

• Commercial viability is most important parameter of selecting a project for Commercial viability is most important parameter of selecting a project for implementation considering the impediment/difficulty associated with it.implementation considering the impediment/difficulty associated with it.

• Better pay packet for the personnel engaged in hydro-power development in line Better pay packet for the personnel engaged in hydro-power development in line with other central agencies working in hydro-power sector. In fact the amount with other central agencies working in hydro-power sector. In fact the amount involved is meager in comparison to the benefit accrued.involved is meager in comparison to the benefit accrued.

• Development of belongingness to the organization through creation of a new Development of belongingness to the organization through creation of a new necessity of purpose in individuals.necessity of purpose in individuals.

SAMPLE ECONOMICS OF DEVELOPED MAJOR HYDRO SAMPLE ECONOMICS OF DEVELOPED MAJOR HYDRO POWER STATIONSPOWER STATIONS..

Total generation = 147.143 MU

Auxiliary consumption = 1.226 MU

Energy sent out = 145.917 MU

Operational cost = Rs. 1.29 Crores

Maintenance cost = Rs. 2.57 Crores

Administration cost including Head Office expenses of Rs. 2.09 Crores

= Rs. 4.06 Crores

Total = Rs. 7.92 Crores

Interest on capital = Rs. 2.43 Crores

Depreciation = Rs. 1.33 Crores

Total running expenditure = Rs. 11.68 Crores

Cost of generation = Rs. 11.68 x 107 / 145.917 x 106

= Rs. 0.80

Considering Rs. 0.10 per unit as transmission cost, the average sale rate of power

= Rs. 3.02 per unit (Rs. 3.12 – Rs. 0.10)

Profit = Rs. 145.917 x (Rs. 3.02 – Rs. 0.80) x 106

= Rs. 32.39 Crores in a year.

a) Study for the year 2006-07 of Jaldhaka Hydel Projecta) Study for the year 2006-07 of Jaldhaka Hydel Project

SAMPLE ECONOMICS OF DEVELOPED MAJOR HYDRO SAMPLE ECONOMICS OF DEVELOPED MAJOR HYDRO POWER STATIONSPOWER STATIONS..

a) Study for the year 2006-07 of Jaldhaka Hydel Projecta) Study for the year 2006-07 of Jaldhaka Hydel Project

The Study reveals that though, one of the

power station of Jaldhaka Hydel Project has

already covered 39 years of its continuous

operation still generation from the said power

station is economically viable and profitable.

SAMPLE ECONOMICS OF DEVELOPED MAJOR HYDRO SAMPLE ECONOMICS OF DEVELOPED MAJOR HYDRO POWER STATIONS.POWER STATIONS.

Total generation = 231.152 MU

Auxiliary consumption = 2.883 MU

Energy sent out = 228.269 MU

Operational cost = Rs. 1.12 Crore

Maintenance cost = Rs. 1.29 Crore

Administration cost including Head Office expenses of Rs. 15.46 Crores

= Rs. 17.17 Crore

Total = Rs. 19.58 Crore

Interest on capital = Rs. 16.10 Crore

Depreciation = Rs. 8.69 Crore

Total running expenditure = Rs. 44.37 Crore

Cost of generation = Rs. 44.37 x 107 / 228.269 x 106

= Rs. 1.94

Considering Rs. 0.10 per unit as transmission loss, the average sale rate of power

= Rs. 3.02 per unit (Rs. 3.12 – Rs. 0.10)

Profit = Rs. 228.269 x (Rs. 3.02 – Rs. 1.94) x 106

= Rs. 24.65 Crore in a year.

b) Study for the year 2006-07 of Rammam Hydel Project, b) Study for the year 2006-07 of Rammam Hydel Project, Stage-IIStage-II.

SAMPLE ECONOMICS OF DEVELOPED MAJOR HYDRO SAMPLE ECONOMICS OF DEVELOPED MAJOR HYDRO POWER STATIONS.POWER STATIONS.

Such example could also be shown for Mungpoo-Kali Khola H.E. Project .

Teesta Canal Fall Hydel Project suffers, being subordinate scheme. Facility

developed by other government utility was utilized to develop hydro power

with the promise that definite quantity of discharge will be maintained at the

canal system at different months and the economics was drawn accordingly.

As the promise failed, so the project.

At the advent of creation of Distribution and Transmission Companies from

the erstwhile WBSEB, nearly Rs. 500 Crore of capital burden of the project

has been graciously exonerated by Govt. of West Bengal and which could

change the financial scenario of the project after 2008 November. The

Irrigation & Waterways Directorate (I&WD), Govt. of West Bengal has taken

up repair of their M.M.C. since 2005 November which would end in November,

2008 with relief of 3 to 4 months every year for generation.

Rough calculation of economics of generation from Rough calculation of economics of generation from Rammam Stage-III Hydel Project being constructed Rammam Stage-III Hydel Project being constructed

under BOOM.under BOOM.

Plant CapacityPlant Capacity :: 120 MW120 MW

Probable unit Generation Probable unit Generation :: 540 MU540 MU

Plant load factorPlant load factor :: 51.37%51.37%

Construction costConstruction cost :: (a)(a) @ Rs. 6 Cr. / MW = Rs. 720 Cr.@ Rs. 6 Cr. / MW = Rs. 720 Cr.

(b)(b) @ Rs. 7 Cr. / MW = Rs. 840 Cr.@ Rs. 7 Cr. / MW = Rs. 840 Cr.

Interest on capital @ 13.5%Interest on capital @ 13.5%

& depreciation @ 2% annually & depreciation @ 2% annually (a)(a) @ 15.5% x Rs. 720 cr. @ 15.5% x Rs. 720 cr.

= Rs. 111.6 Cr./Year i.e. 15.5%= Rs. 111.6 Cr./Year i.e. 15.5%

Running cost @ Rs. 5 Cr/Yr.Running cost @ Rs. 5 Cr/Yr.

[As prevailing at RHP, Stage-II][As prevailing at RHP, Stage-II]

Fixed + Running cost Fixed + Running cost

= Rs. 116.6 Cr.= Rs. 116.6 Cr.

(b)(b) @ 15.5% x Rs. 840 Cr. @ 15.5% x Rs. 840 Cr.

= Rs. 130.2 Cr.= Rs. 130.2 Cr.

Running cost @ Rs. 5.0 Cr.Running cost @ Rs. 5.0 Cr.

Fixed + Running cost Fixed + Running cost

= Rs. 135.2 Cr.= Rs. 135.2 Cr.



Cost of generation atCost of generation atplant load factor of 51.37%plant load factor of 51.37% (a)(a) 116.6 x 107 / 540 x 106 = Rs. 2.16/kwh116.6 x 107 / 540 x 106 = Rs. 2.16/kwh (b)(b) 135.2 x 107 / 540 x 106 = Rs. 2.50/kwh135.2 x 107 / 540 x 106 = Rs. 2.50/kwhP.L.F. 40%P.L.F. 40% (a)(a) Rs. 2.77 / kwhRs. 2.77 / kwh (b) Rs. 3.21 / kwh(b) Rs. 3.21 / kwhP.L.F. 50%P.L.F. 50% (a)(a) Rs. 2.22 / kwhRs. 2.22 / kwh (b) Rs. 2.57 / kwh(b) Rs. 2.57 / kwh

Average PLF between 40% and 51.37%Average PLF between 40% and 51.37%(a)(a) Rs. 2.47 / kwhRs. 2.47 / kwh (b)(b) Rs. 2.86 / kwhRs. 2.86 / kwhAvailable unit 85% of 540 MU Available unit 85% of 540 MU = = 459 MU459 MUFree power to Sikkim 12.5% of 540 MU Free power to Sikkim 12.5% of 540 MU = = 67.5 MU67.5 MUPurchased cost Purchased cost (a)(a) 459 x 2.47 / kwh459 x 2.47 / kwh == Rs. 113.37 Cr.Rs. 113.37 Cr.

(b)(b) 459 x 2.86 / kwh459 x 2.86 / kwh == Rs. 131.27 Cr.Rs. 131.27 Cr.Power Available for Sale (459 – 67.5) MU Power Available for Sale (459 – 67.5) MU = = 391.5 MU391.5 MURevenue at Rs. 3.12/unit for 391.5 MU Revenue at Rs. 3.12/unit for 391.5 MU = = Rs. 122.15 Cr.Rs. 122.15 Cr.Thus in case of cost of development is Thus in case of cost of development is Considered as Rs. 6 Cr./MW, the yearly gain =Considered as Rs. 6 Cr./MW, the yearly gain = Rs. 122.15 Cr. - Rs.113.37 Cr. Rs. 122.15 Cr. - Rs.113.37 Cr.

= = Rs. 8.78 Cr.Rs. 8.78 Cr.In case of cost of development is In case of cost of development is Considered as Rs. 7Cr./MW, the yearly loss Considered as Rs. 7Cr./MW, the yearly loss == Rs. 131.27 Cr. - Rs.122.15 Cr. Rs. 131.27 Cr. - Rs.122.15 Cr.

= = Rs. 9.12 Cr.Rs. 9.12 Cr.



•No transmission loss is considered.

•Interest charge on capital, depreciation and maintenance cost

of transmission line are not considered which as per

agreement is to be built by WBSEDCL.

•The tariff for sale of power to WBSEDCL would be decided by

Central Electricity Regulatory Commission as per agreement.

•Cost control is essential for benefit of WBSEDCL.

July'2007 June'2022Sl. No. Name of Project

1Rammam Stage-I( 3 x 12 = 36 MW )

2Rammam Intermediate(3 x 3 = 9 MW)

3Rammam Ultimate( 30 MW)

4TLDP-I ( 40 MW )

5TLDP-II ( 60 MW )

6Pedong ( 2 x 1.5 = 3 MW )

7Teesta IntermediateH.P. (150 MW )

8Torsa Hydel Project( 50 MW )

9Raidak Hydel Project( 48 MW )

End of 11th five year plan End of 12th five year plan End of 13th five year plan

13th yr. 14th yr. 15th yr.3rd yr. 4th yr. 5th yr. 6th yr.

15 Year Implementation programme of conventional hydro power development in West Bengal

9th yr. 10th yr. 11th yr. 12th yr.1st yr. 2nd yr. 7th yr. 8th yr.

Start date is considered as J uly 2007

09/07 -

RDPR AFA L INF AOW C CONST

12/07 - 06/08 - 06/09 - 06/10 - 01/12 - 03/12 04/12 -

09/07 -

RDPR AFA L INF AOW C CONST

12/07 - 06/08 - 06/09 - 01/10 - 07/10 - 10/10 -

01/08 -

DPR AFA L INF AOW C CONST

07/08 - 01/09 - 01/10 - 12/10 01/11 - 06/11 07/11 - 09/11 10/11 -

07/07 -

DPR AFA L INFS AOW C CONST

09/07 - 03/08 - 03/09 - 06/09 - 12/09 - 03/10 -

03/10 -


09/10 - 03/11 - 03/12 - 03/13 - 09/13 - 11/13 12/13 -

DSIPFR

10/08 - 07/08 -

01/10 -


07/10 - 01/11 - 12/11 01/12 - 12/12 01/13 - 07/13 - 10/13 -

DSI

07/08 -

Legend :

1. PFR : Pre Feasibility Report 2. DSI : Detail Survey & Investigation. 3. DPR/RDPR : Detail Project Report / Revised Detail Project Report. 4. AFA : Administrative & Financial Approval. 5. LA : Land Acquisition. 6. INFS : Infrastructure. 7. AOW : Award of Work. 8. CMI : Contractor Move In. 9. CONST : Construction.

01/08 -


07/08 - 01/09 - 01/10 - 12/10 01/11 - 06/11 07/11 - 09/11 10/11 -

01/08 -


07/08 - 01/09 - 01/10 - 12/10 01/11 - 06/11 07/11 - 09/11 10/11 -

01/10 -


07/10 - 01/11 - 12/11 01/12 - 12/12 01/13 - 07/13 - 10/13 -

DSI

07/08 -

Documents

BEST PRACTICES OF HYDROPOWER DEVELOPMENT