1mw utility scale solar pv power plant

8/10/2019 1MW Utility Scale Solar PV Power Plant

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Queries@ [email protected]

Detail Project Report

1MWp SPV Power Plant

w w w . r e n e w p o w e r z o n e . i n Page 1

Acknowledgement

This analysis based report is done for the readers of my previous report 1MW Utility Scale SPV

Power Plant, mainly for the readers from South region of INDIA as they are asking repeatedly

about the probability and feasibility-technical & Financial-of a SPV power plant in their region.

At the same time its not possible for me to design a report for each and every state from South

India, so I took Chennai city. Also the previous report was not so detail, was very basic and

meant to the readers who want to get an overview on how a utility scale power plant works.

Now, in this report, I discuss about in depth. From panels selection to CB sizing all are

presented in very detail. Hope, this time you get a strong knowledge on designing and

estimation of 1MW solar PV power plant. Unlike the previous report, the financial aspect

discussed at the end of the paper. In this paper, the financial assessment has done in very detail

and considering the current scenario of SPV market including the cost of solar PV modules,

inverters cost, cable, transformer etc. prices and the funding, interest rate.

And if you have any queries or need clarification, please contact at [email protected] or

[email protected] .

Disclaimer

The presented data here are NOT TAKEN from any copyright materials and not showing under

my name. The meteo data collected from NASA website and NREL database which is free over

the internet. Designing of PV system is totally based on the practical experience of the author.

Assumption & Consideration

Shading consideration: No shading has been considered at the site during the calculation

design. So it is advised that at the time of execution, please check whether there is any kind of

obstacle in the site which may cause partial/full shading on PV strings and/or PV array. If the

shading occurs, then the estimated power generation will not match the actual power

generated.

Load Factor: It is assumed that the produced power from the PV plant will be fed to the local

utility grid. So, while designing the system, no unbalanced load considered in 3 phase

configuration.

Meteo data: The calculation based on the meteo data collected from NASA website which isvery reliable. Now, based on the co-ordinates the values have been presented in this report. So,

total design is based on this data. For a different location (coordinates), the system design will

differ. It is advised not to copy and implement the design without consulting the author or any

certified PV professional because this design estimation is valid only for a particular site.
mailto:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]:[email protected]


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Site consideration: this design has been done by considering the PV modules & array will be

ground-mounted and the site-elevation angle taken 30

.

Cost Estimation: 1MW Solar PV power plant cost estimation has done considering the current

PV market scenario (Sept-Dec 2013), so after few months the cost may vary according the

market.

CAD design & layout: I have not uploaded/attached the CAD design. If anybody interested in

setting up the plant then only contact at the given e-mail ids to get the design file.

Transmission & wheeling losses: Here, in this report, while doing the technical assessment, the

distance from nearest substation to the 1MW solar PV power plant taken within 1.5 KM and so

the wheeling losses considered as 3% of total power transmission. And in the financial

assessment, no wheeling charges have been considered.

Design Criteria: While designing & estimating the technical components & solutions, all the

required/applicable standard design codes have been considered. Mainly the IEC (International

Electrotechnical Commission) Codes, IS codes from BIS have been considered thoroughly.
mailto:[email protected]:[email protected]


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Contents

1) Introduction 4

2) Project details 5

3) Location metrological details 6

4) Determination of optimum tilt angle 7

5) Solar power plant overview 8

6) Module selection & sizing 9

7) Inverter selection & sizing 11

8) Transformer selection 12

9) Other protective devices including switch gear details 13

10) Cable sizing & selection 1411) Civil works details 16

12) Performance analysis & simulation 17

13) Timeline of the project 21

14) Operation & maintenance structure of the plant 22

15) Financial calculation, estimation of NCF, Payback period 23

16) Guide on selection of various components 27

17) Conclusion 28

18) About the Author 28


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Introduction

India is densely populated and has high solar insolation, an ideal combination for using solar power in

India. India is already a leader in wind power generation. In the solar energy sector, some large projects

have been proposed, and a 35,000 km2 area of the Thar Desert has been set aside for solar power

projects, sufficient to generate 700 GW to 2,100 GW. Also India's Ministry of New and Renewable

Energy has released the JNNSM Phase 2 Draft Policy, by which the Government aims to install 10GW of

Solar Power and of this 10 GW target, 4 GW would fall under the central scheme and the remaining 6

GW under various State specific schemes.

The Electricity Act, 2003, paves way for an innovative approach to solve our countrys power problems.

It has paved the way for a competitive environment; open access to existing transmission and

distribution network to transmit electricity across regions; de-licensing of generation, captive power and

dedicated transmission lines; licensing of distribution and supply companies and the restructuring of

State Electricity Boards.

The Ministry of Power has mandated to promote cogeneration and renewable sources for Power

generation under Nodal agencies and hence it will play a major role in mainstreaming renewable energy

sector. The advantage or renewable resources includes their capacity to produce energy without

producing carbon-based warming and polluting agents into the atmosphere. The financial cost of its

applications is not always cheap but if the environmental costs of using fossil are accounted for,

renewable energy wins hands-down. There are also indirect savings on health and its costs as there are

no harmful emissions.

In the above backdrop, YOUR COMPANY NAMEhas decided to set up a 1/1000 MW/KWSolar Power

Plant. This Detailed Project Report (DPR) brings out all technical details and overall costs justifying theselection of the project. The total power generation is envisaged to be 1050KW from Solar Photovoltaic

Cell. It is a very important document that is required for Environmental Impact Assessment (EIA) studies,

fixation of tariff, finalizing Power Purchase Agreement (PPA) and also for submission to Financial

Institutions for obtaining project funding. The total project cost is expected to be Rs ___ Crores and the

average cost of generation is expected to be Rs. 7.5/kWh (ASSUMED).

For this project, poly-crystalline technology based 3rd

generation Solar PV modules will be used. Along

with this, highly efficient, photon-tested string inverters going to be integrated to the system. These

technologies are the best in the industry. So, Its clear that our project is not compromising with the

quality of the materials and or the components which obviously led this project to success.


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Client details

Country India

Location CHENNAIContact id [email protected]

Contact Person abc

company ABCXYZ

Purpose Power generation &

distribution to State utility grid

Project Details

Type of installation Ground-mounted

Estimated array peak

power

1100KWp

Shading consideration Shade-free

Grid voltage 11KV

Phase connection 3-phase

Grid frequency 50Hz

Available/required area 20000 m2(apprx)

Safety level IP65

Site Location/Layout

Site & Meteo Details

Location coordinates 10.5, 78.5 (assumed)

Ambient

Temperature(0C)

Max Average Min

28.5 27.2 25.5

Relative humidity 72.5%

Daily Solar irradiation-

Horizontal

5.19 KWh/m2/day

Atmospheric Pressure 100.1 kPA

Wind Speed 2.7 m/s

Earth temperature Max Average Min

29.6 28.8 26.4

Height from sea level 10m


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0

1

2

3

4

5

6

7

KWh/m2/day

Solar Irradiation

Solar Irradiation

23

24

25

26

27

28

29

30

31Air & earth temperature-monthly

Air temperature

earth temperature


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Optimum Tilt Angles For Solar PV Array Adjusted by Months

Jan Feb Mar Apr May Jun34 26 13 0 11 14

Jul Aug Sep Oct Nov Dec12 5 6 19 29 35

Figures shown in degrees from vertical

Irradiation Data on different tilt angles (respect to horizontal surface, KWh/m2/day)

Months 100

250

120

January 5.04 5.35 5.41

February 5.98 6.16 6.16

March 6.51 6.41 6.52

April 5.76 5.39 5.85

May 5.78 5.65 5.78

June 5.28 5.22 5.29

July 4.99 4.9 4.99August 5.09 4.9 5.1

September 5.33 5.14 5.34

October 4.67 4.69 4.71

November 4.27 4.44 4.45

December 4.5 4.78 4.84

Annual avg. 5.26 5.25 5.36

* Here, 120

angle at AM1.5 has been chosen as fixed south faced model for the project

Winter

56 angle

Spring/Autumn

80angle

Summer

104angle

On the 21st December, the sun will rise 87 east of due south and set 87 west of due south.

On the 21st March/21st September, the sun will rise 91 east of due south and set 91 west of due

south.

On the 21st June, the sun will rise 95 east of due south and set 95 west of due south.


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Solar PV System Design

System Overview

SPV Array Peak Power 1082KWp

No. of SPV strings 206

Connection of PV modules in each string Series

Inverter 20KW MPPT based 3 phase string Inverter

Inverter Type/Topology MPPT & Transformer Less

Total no. of Inverters 53

Strings/Inverter 4/1

Modular Components

Components Specification Quantity Make

Solar PV modules Max Peak Power=250Wp

Voc= 36V ;Vmp= 29V

Isc= 9.25A ; Imp= 8.65A

4326

Non-Modular Components

Components Electrical Specification Quantity Make

Inverters 20KW, 3Phase &MPPT;

Vmax= 800V

53

Transformer 1250KVA 1

SCADA/Monitoring

System

Integrated with Remote

Monitoring system web based

1

Circuit Breaker Inverter to Busbar= 46A 3p;

busbar/Panel box to

transformer= 1600A 3p;

53

1

DC Disconnect 1000V,20Amps 206

Switch Gear Rated voltage=12KV;Rated main busbar

current(Max)=1250A;

SC withstand capacity = 25KA/3s

Dynamic capacity= 50KA

1

Distribution Panel NA 1

Isolator Vmax= 12KV;

Max cont. current=1250A

1

Cables DC Side= 10 mm2

AC Side=LT: 16mm2

& HT:

185mm2


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Solar PV Module Specification & Array Sizing Details

Required Electrical Characteristics of SPV Modules

Design criteria IEC-61853-1

Watt Peak 250Wp

VOC 37.20V

VMPP 30.10V

ISC 8.87A

IMPP 8.30A

Module

Efficiency/module area

15%

Power Tolerance 2%

Technology Si-PolyNo. of cells 60 cells in series

Required Temperature Co-efficient Characteristics

@ STC

NOCT (oC) 45 2

oC

Module Efficiency (%/oC) -0.07 0.01

Temp. Co-Eff. Of Pmax (%/oC) -0.43 0.05

Temp. Co-Eff. Of Voc (%/oC) -0.34 0.05

Temp Co-Eff. of Isc (%/oC) 0.065 0.05

PV Module Behavior at different irradiance level

PV Parameters @ 1000W/m2

@800 W/m2

@ 400 W/m2

PMPP 249.8.2W 200.6 W 100.00

VOC 37.2V 36.8 V 35.8V

VMPP 30.1V 30.2 V 30.1V

ISC 8.87A 6.64A 3.55A

IMPP 8.31A 7.10A 3.33A

Module efficiency 15.54% 15.32% 15.27%

Temperature co-eff -0.43%/0C -0.43%/

0C -0.44%/

0C

Required Operating Condition Details:

Maximum System

Voltage (IEC)

1000V

Maximum Fuse Rating 15A

Limiting Reverse

Current

15A

Operating Temp

Range

(-10 to 60)0C

Max Static Load-

front(Snow+Wind)

5500PA

Max Static Load-

Rear(wind)

2500PA

Model design parameters

R shunt 250 ohm

R shunt (G=0) 2100 ohm

R series model 0.29 ohm

R series max 0.37 ohm

R series apparent 0.47 ohm


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Solar PV Array Sizing & Connection Details

conditions At STC (250C) At Avg. Ambient temp. (28

0C)

Suggested array Size 1100 KWp 1100KWp

Actual Solar PV Array Size 1082KWp 1100KWpWatt Peak of each SPV module 250Wp 263Wp

Total nos. of SPV module

required

4326 4326

Total nos. of strings 206 206

Nos. of SPV modules in each

string

21 21

SPV connection in each string Series Series

String voltage (VMPP) 609V 630V

String current (ISC / IMPP) 8.87A/8.3A 9.51A/8.82A

Connection of strings Parallel Parallel

Array voltage (VOC / VMPP) 780V/635V 750V/620V

Array current (ISC / IMPP) 1830A/1710A 1960A/1816A


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Detail Solar Inverter Specification & Design Details

Inverter Type String Inverter (MPPT)

Quantity 53

INPUT (DC)

Max. Power23KW

Max absolute Input Voltage 1000V

Start Voltage 350V

Nominal MPP voltage range 490V-800V

Max Input Current per string 41.5A

Nos. of Independent MPP inputs/strings

per MPP inputs

1/6

OUTPUT (AC)

Rated Output Power 20000W

Max. Apparent AC Power 20000VA

Power Threshold 20W

Nominal AC Voltage/range 3/N/PE;230/460VAC Power Frequency/ range 50Hz

Max. output current 3x29A

Power factor at rated power 1

Feed-In phases/connection phases 3/3

Efficiency

Max. Efficiency 98.7%

Protection Details

DC Disconnect Available

DC Surge Arrester Available

Protection Class I (as per IEC 62103)

Total harmonic distortion


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Transformer Sizing

Design Criteria IS-2026 / IEC-60076

Transformer type Power transformer, core type with oil-immersed ;

650C winding temp rise

Cooling type ONAN(Oil Natural Air Natural)

Rated KVA 1250KVAHigh Voltage rating 11000V

Low Voltage Rating 460V

Nominal impedance 4.7%

Impedance tolerance 7.5%

Nominal secondary amps 1250A

Max SC withstand current 20KA/3s

HV connection DELTA

LV connection Wye

Operating frequency 50Hz

Tap changer 5% of full load capacity

Protective devices

components Specification Quantity

DC Disconnects String to inverter= 1000V, 15A; 2 pole

(As per IEC-60947)

206

Switch gear Rated voltage=12KV;

Rated main busbar current(Max)=1250A;

SC withstand capacity = 25KA/3s

Dynamic capacity= 50KA

IP55

1

Circuit breakers (MCCB)(NOT required if Inverter has inbuilt

protection)

Inverter to Busbar= 60A 3p;

busbar/Panel box to transformer= A 3p;

53

1

Main Isolator (HT side)

Design criteria IS-9921/IEC-129

Operating frequency 50hz 3% Rated peak withstand

current (KA peak/rms)

63.5KA

Nominal system voltage 11KV 1.2/50 micro sec lighting

withstand Volts (KV peak)

To earth and

isolating poles

Across the isolating

distances

170 195

Max system voltage 12KV Rated 1 minute power

frequency withstand

voltage(KV r.m.s)

To earth and

isolating poles

Across the isolating

distances

75 85

Max continuous current 2500A No. of poles 3

Rated SC current for 3s 40KA Min creepage distance 320mm


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Cable Sizing

DC Side Cables (strings to inverter)Design criteria IEC-60811 & IEC-60216

Cable material Copper

Single cable length per string to inverter 70 ft

Cross section per string 4 mm2

Voltage drop 0.18V

Relative power loss reference to Max DC power 0.07%

Max withstand temp. Normal condition Short-circuited

condition

900C 250

0C

Max withstand current capacity 42KA/1sec

Conductor type Stranded

Insulation material XLPE

LT Cables (Inverters to busbur/distribution panel)Design criteria IEC-60228 & IEC-60811

Cable material Copper

Max Single cable length per inverter to panel box 60 ft

Cross section 16 mm2

Voltage drop (3phase) 0.46V

Relative power loss reference to Max AC nominal

power

0.23%

Max withstand temp Normal condition Short-circuited

condition

900C 2500C

Max withstand current capacity 2KA/1sec

Conductor type Stranded

Insulation PVC

HT Cables (from distribution panel to feed-in point)Design criteria IEC-60502

Cable material Al

Cable length from distribution panel to feed-

in point

25 ft

Cross section 185mm2

Voltage drop (total) L1 1.37V

L2 1.37V

L3 1.37V

Relative power loss reference to Max AC

power

0.57%

Voltage grade 11KV(UE), heavy duty

SC withstand current capacity 26KA @1s

Insulation XLPE


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Line Losses

DC Side AC Side Total

Total cable length 8120 ft 3070 ft 11180 ft

Cable cross section 4 mm2

16 mm2

+185 mm2

4 mm2

+16 mm2

+185

mm2

Power loss @ nominal

operation

35 KW 5 KW 40KW

Relative power loss @

nominal operation

0.07% 0.76% 0.83%

Busbar constructional Analysis

Busbar material Main busbar Auxilury busbar

Al alloy E91 E

grade

Copper

Busbar insulation Fully insulated

Busbar length Main Aux

3.5mt 0.75mt x 52

Earthing bus materials GS (IEEE std. 80/IEC-60439-1)

Earthing & Lighting Protection

Design Criteria IEEE Standard-80

Grounding System Earth grid resistance Less than 10 ohm

Placing of earth

electrode

Earth Pit

Earth Electrode sizing

Physical Parameters Heavy duty GI pipes, 32mm dia, 3mt long

Material Galvanized Steel(GS), flat type

Min depth of earth pit 600mm

Components grounding Min 75x10mm GS stripLightning Protection

Design criteria As per IEC-62305

Placing On the highest panel of array

Dimension 40mm dia with 3m height (vertical air

termination)


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CIVIL WORKS

Live Loads estimation of control room + admin building (as per IS 875:1987)

parameters details Remarks

Roof load 1750 kg/ m2

As per IS-456Ground floor load Control room 18000kg/m

2As per IS-456

Office 5000kg/ m2

IS-456

Piping load 50 kg/ m2

As per IS-456

Electrical + HVAC 26 kg/ m2

As per IS-456

Seismic load As per IS-456

Roof drainageRoof drain heads 6

Construction detailsInterwall

Cement : Sand 1:6Interwall thickness 230mm

Parapet walls

Cement : Sand 1:4

thickness 115mm

Steel work Reinforced bars will be provided

as per IS 800:2007

PV Array mounting & constructional details

PV tilted angle (optimized) 130

(@1070 W/m2

/day)Mounting type Ground mounted

Overall dimension As per design

Foundation Plain cement concrete (PCC)

Foundation grade 1:5:10

Wind load 9.72 Km/hr

Fixing type SS 304 fasteners

Total Land required 5 acres


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System Performance Analysis & Simulation

Solar Paths at site on monthly basis Reference Incident energy in collector plane

Normalized production per installed KWp


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Performance Ratio (PR) Normalized Production & Loss factor

Daily System Output Energy SPV Array Power Distribution


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Overall Power plant performance Summery

Total no. of PV modules 4326 (250Wp)

Total nos. of Inverters 53 (20KW)

Max DC input per Inverter 21KW

Nominal PV power 1082 KWp

Max. PV power output 1027 KWdcNominal AC power 1060KWac

Max operating power @ STC 962KWac

Max operating power @Ambient Temp. 1027KWac

Plant production 1655 MWh/year

Specific production 1526KWh/KWp/year

Normalized production 4.2 kWh/KWp/day

Array losses 0.87 KWh/Kp/day

Overall losses 0.22 KWh/KWp/day

Performance ratio 0.80


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Time line of the project

Design

Preparation of design & estimation of the plant

15 working days required.

Land

acquisition

As per design requirement, proper land selection & acquisition processed.

Time required 1 month

PPA

Power Purchase Agreement(PPA) with private power purchaser need to be finalized at a feasible rate.

Required time is 15 working days

DPR

Preparation of Detailed Project Report including technical feasibility of the project prepared.

Time required 6 working days.

finance

Arrangement of finance/fund for the project from nationalized or private financing agency with significant interest rateand equity share will be finalized.

Required time for this stage is 1 month.

procurement

After finalizing PPA and arrangement of fund for the project, procurement work starts including preparation & finalizinvendor selection, BOM, BOQ, order placing, follow-ups of delivery to site/warehouse.

Estimated time for this step is 1 month.

construction

After the processing of procurement, first civil construction at the site starts for PV mounting structure set-up andcontrol-room, administrative building. Finishing the civil works, PV installation & all electrical construction works incluthe Grid Evacuation will be processed.

Estimated time for this whole work is 2 months.

commission

ing

Commissioning of the plant by authorized govt. body or certified 3rd party will be done followed by Completion of projeexecution.

required time for this step is 6 working days.


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Operation & Maintenance of Plant

Why do we need an O&M for Solar PV power plant?

As every plant needs a regular maintenance work to make it functional & in well-condition, so

in this case also, a PV power plant also requires a sound & efficient operation & management

team to perform all the work after plant commissioning.

A detailed structure of O&M team has been provided here in a hierarchy model to demonstrate

in a simpler way.

Plant manager

Maintenanceengineer(E&IE)

Technician1

skilled labour1

Technician2

skilled labour2

control roomtechnician

maintenanceEngineer(Mech)

Skilled labour1 skilled labour2

operationmanager

Supply chainexecutive

Accountsexecutive


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Financial Analysis & feasibility

Initial Investment in terms of components cost & service charges

Sl.

No.Components/services Total cost

(in INR)

Remarks

1. Solar PV modules 45,100,000 41rs/Watt peak

2. Solar inverters 11,660,000 11rs/Watt peak

3. Transformer 2,940,000 From international vendor

4. Protective devices 1,200,000 From international vendor

5. Wires/Cables 1,000,000 Considering IEC codes & ISO

certified

6. SCADA/RMS 1,000,000

7. Project execution & commissioning 2,000,000

8. Construction works 4,000,000

9. Grid evacuation 1,000,000 (assumed) Assumed because of having

no sufficient data

10. Other official works 1,000,000 Subject to change as per

rules

Total Project investment 70,900,000 INR

Total expenses over the year for plant O&M and staffing = 2,000,000

This expense is considered for regular maintenance cleaning of PV array, checking the status of

inverter, cable-fault checking, emergency maintenance & replacement of components and

annual salaries of O&M team of the plant.

Loan Interest rate is @12% over 70% of total project cost which shall be completed within next

7 years (the rest 30% as equity shares).

Estimated time period 7 years 10 years

Total Loan amount 49,630,000 49,630,000

Interest rate 12% 12%

EMI 876,110 712,050

Monthly interest 285,270 298,460

total Interest paid 23,962,830 35,815,600

*all the amounts are considered in INR currency.


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Detailed Analysis of Installment, EMI, Interest of the 70% project

finance/fund

Sl.

No.

Installments EMI Monthly principle Monthly Interest

1) 0 0 0 0

2) 1 876,105 379,805 496,300

3) 2 876,105 383,603 492,502

4) 3 876,105 387,439 488,666

5) 4 876,105 391,314 484,792

6) 5 876,105 395,227 480,878

7) 6 876,105 399,179 476,926

8) 7 876,105 403,171 472,934

9) 8 876,105 407,203 468,903

10) 9 876,105 411,275 464,831

11) 10 876,105 415,387 460,71812) 11 876,105 419,541 456,564

13) 12 876,105 423,737 452,369

14) 13 876,105 427,974 448,131

15) 14 876,105 432,254 443,851

16) 15 876,105 436,576 439,529

17) 16 876,105 440,942 435,163

18) 17 876,105 445,351 430,754

19) 18 876,105 449,805 426,300

20) 19 876,105 454,303 421,802

21) 20 876,105 458,846 417,259

22) 21 876,105 463,434 412,67123) 22 876,105 468,069 408,036

24) 23 876,105 472,749 403,356

25) 24 876,105 477,477 398,628

26) 25 876,105 482,252 393,853

27) 26 876,105 487,074 389,031

28) 27 876,105 491,945 384,160

29) 28 876,105 496,864 379,241

30) 29 876,105 501,833 374,272

31) 30 876,105 506,851 369,254

32) 31 876,105 511,920 364,185

33) 32 876,105 517,039 359,06634) 33 876,105 522,210 353,896

35) 34 876,105 527,432 348,674

36) 35 876,105 532,706 343,399

37) 36 876,105 538,033 338,072

38) 37 876,105 543,413 332,692

39) 38 876,105 548,847 327,258

40) 39 876,105 554,336 321,769


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41) 40 876,105 559,879 316,226

42) 41 876,105 565,478 310,627

43) 42 876,105 571,133 304,972

44) 43 876,105 576,844 299,261

45) 44 876,105 582,613 293,492

46) 45 876,105 588,439 287,66647) 46 876,105 594,323 281,782

48) 47 876,105 600,266 275,839

49) 48 876,105 606,269 269,836

50) 49 876,105 612,332 263,773

51) 50 876,105 618,455 257,650

52) 51 876,105 624,640 251,466

53) 52 876,105 630,886 245,219

54) 53 876,105 637,195 238,910

55) 54 876,105 643,567 232,538

56) 55 876,105 650,002 226,103

57) 56 876,105 656,502 219,60358) 57 876,105 663,068 213,038

59) 58 876,105 669,698 206,407

60) 59 876,105 676,395 199,710

61) 60 876,105 683,159 192,946

62) 61 876,105 689,991 186,114

63) 62 876,105 696,891 179,214

64) 63 876,105 703,860 172,246

65) 64 876,105 710,898 165,207

66) 65 876,105 718,007 158,098

67) 66 876,105 725,187 150,918

68) 67 876,105 732,439 143,66669) 68 876,105 739,763 136,342

70) 69 876,105 747,161 128,944

71) 70 876,105 754,633 121,472

72) 71 876,105 762,179 113,926

73) 72 876,105 769,801 106,304

74) 73 876,105 777,499 98,606

75) 74 876,105 785,274 90,831

76) 75 876,105 793,127 82,979

77) 76 876,105 801,058 75,047

78) 77 876,105 809,068 67,037

79) 78 876,105 817,159 58,94680) 79 876,105 825,331 50,774

81) 80 876,105 833,584 42,521

82) 81 876,105 841,920 34,185

83) 82 876,105 850,339 25,766

84) 83 876,105 858,842 17,263

85) 84 876,105 867,431 8,674


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Net Cash Flow/year Estimation (all amounts are in INR)

Initial Investment 70,900,00

Expenses for O&M per year 2,000,000

Total amount paid/year for loan(7 years term

considered)

10,513,320

Tolerance factor 2%

Total amount to be paid per year 12,763,600Energy generated per year 1,655MWh

PPA rate for next 12 years 7.5rs/KWh

REC floor price 12,000rs/MWh (approx.)

Gross cash flow through PPA 12,412,500

Gross cash flow through REC trading 19,860,000

Net Cash Flow (NCF) per year 21,759,180

0

100000

200000

300000

400000

500000

600000

700000

800000

900000

1000000

1 4 7 10 13 16 19 22 25 28 31 34 37 40 43 46 49 52 55 58 61 64 67 70 73 76 79 82 85

Installment

EMI

Monthly Princip

Monthly Interes


26/28





NET CASH FLOW & PAY BACK PERIOD

Now according to Discounted Cash Flow method (considering @10% DCF)

years Present value of rs.1 @10%

1 0.909 19,779,094.622 0.826 17,973,082.68

3 0.751 16,341,144.18

4 0.683 14,861,519.94

5 0.621 13,512,450.78

6 0.564 12,272,177.52

7 0.513 11,162,459.34

8 0.467 92,145,357.80

9 0.424 83,660,898.56

10 0.386 76,162,987.84

So, Pay Back Period= 6 years 1 month (approx.)


27/28





Most suitable vendors/suppliers of the project componentsSolar PV modules 1. Vikram Solar

2. Waaree Energies

3. Sova Power4. Canadian Solar

5. Trina Solar

6. First Solar

Inverter 1. Power One

2. SMA

3. Smart Power

4. REFusol

5. Delta

6. Schneider Electric

Transformer 1. ABB2. Schneider Electric

3. Ascott transformer

4. Voltech

Switch gear 1. Schneider Electric

2. Megawin

DC Disconnect 1. Schneider Electric

Circuit breaker 1. Megawin

2. ABB

SCADA/RMS 1. Draker

Cables 1. Havells

2. Finolex cables

3. RR Kabels

4. Anchors

Isolator 1. ABB

2. Schneider Electric

3. Megawin


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Conclusion

Id like to thank you for reading the whole paper. Hope you have got clear view on design &

estimation of 1MW utility scale Solar PV Power Plant. Though I have discussed about the

technical part as well as the financial part in detail, I might have been forgot to add anythingmore important. So, you are most welcome to give your valuable feedback & suggestion on this

report. At the end, I discussed about some companies for the components. I have chosen these

companies because their products are fulfilling my design criteria. It is not that Im representing

these companies and their products.

About Myself: Im a Solar PV professional currently working with a solar EPC company as

Project Engineer. Ive done B.Tech in Electrical Engineering & holding a PG certificate in

Advanced Solar Energy from delft Technical University, Netherlands.

Personally I provide technical consulting including site survey, technical design, CAD design,preparation of DPR, guide in procurement & Construction.

You can review my papers/reports at www.wbut.academia.edu/amritmandal

Connect to my professional profile in linkedIn at

http://www.linkedin.com/pub/amrit-mandal/55/667/a3

Read solar PV related articles & learn about new technologies at- www.renewpowerzone.in

Contact me or send your queries at- [email protected] , [email protected]

THANK YOU
mailto:[email protected]://www.wbut.academia.edu/amritmandalhttp://www.linkedin.com/pub/amrit-mandal/55/667/a3http://www.renewpowerzone.in/mailto:[email protected]:[email protected]:[email protected]:[email protected]://www.renewpowerzone.in/http://www.linkedin.com/pub/amrit-mandal/55/667/a3http://www.wbut.academia.edu/amritmandalmailto:[email protected]

1mw utility scale solar pv power plant

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