50 Kw project Intro :- complete turnkey basis Development , financing support & EPC Optimum solution for low losses , max output . Benefits :- Govt promting , JNNMS mission Subsidy – Rs 70/watt grid connection. Rs 90 / watt Off- grid . Or 30% Project cost which ever is less. Soft loan at 5% Per annum . Benchmark Price Rs 300 / Wp for off- grid . Rs 210 / Wp for Grid connection . Funding 70% on sanction . 30 % on completion.
Approval mechanism . 45 days Beneficial Points • Reduction in more that 60 tonnes Co2 emission • Grid connection can save pto 20 – 30 % total cost in compare to off – grid battery type and battery losses too. • Saving of Rs 26646.16 Per month , energy profit @ rate of 4.14 Rs Per month , Avrage saving annually is 3.19 Lakhs .
• 50 Kw , 30 day Sunlight for 5 hr / day • Produces = 250 Kwh / day
i.e 7500 Kwh / month 7500 units
• Tracking system (optional) Dual Axis will increase the efficiency by 27 % w.r.t fixed type mounting system .
• Operational cost is very low than the capital investment
• Solar panels SUNGEN ( Hong Kong) , IEC Certified with 25 year of warranty on efficiency . TUV , UL Certificate. • Annual Energy feed 72.2 Mw , for grid connected . Metering – 15 min time interval , at output of inverter billing purpose net export Export & import . Levelised Tariff - (Rs / Kwh ) 18 .45 or Rs / unit
AC power is stepped up by 415 / 11Kv Feed it to the grid .
Life – 25 Year , after that Efficiency reduced to 80- 75 %
Excise duty is exempted as per MNRE consideration .
Packing , forwarding , inland transport , insurance @ 2.5 % for all equipment .
COMPONENTS USED
1. Solar PV modules
2. Structure – MS Hot Dip Galvanized.
3. Field junction box.
4. Main junction box .
5. Grid – tie inverter – synchronized , meter equivalent and data logging
6. Ground fault protection system.
7. Cordless modem / Web box etc.
8. Cables
9. Lightning Arresters.
10. Earthning.
Energy Profits Array Type: Fixed Tilt
Station Identification City:
Results
New Delhi
Country/Province:
IND
Latitude:
28.58° N
Longitude:
77.20° E
Elevation:
216 m
Weather Data:
IWEC
Month
Solar Radiation
AC Energy
Energy Value
(kWh/m2/day)
(kWh)
(rupee)
1
5.56
6192
25634.88
2
5.90
5778
23920.92
3
6.65
7046
29170.44
4
7.01
6995
28959.30
PV System Specifications
5
6.91
6925
28669.50
DC Rating:
50.0 kW
6
6.34
6139
25415.46
DC to AC Derate Factor:
0.770
7
5.28
5332
22074.48
AC Rating:
38.5 kW
8
5.25
5376
22256.64
Array Type:
Fixed Tilt
9
5.89
5843
24190.02
Array Tilt:
28.6°
10
6.17
6400
26496.00
Array Azimuth:
180.0°
11
5.74
5864
24276.96
12
5.56
6053
25059.42
Year
6.02
Energy Specifications Energy Cost:
4.1400 rupee/kWh
73941 306115.72
Array Type: 1-Axis Tracking
Station Identification City:
Results
New Delhi
Country/Province:
IND
Latitude:
28.58° N
Longitude:
77.20° E
Elevation:
216 m
Weather Data:
IWEC
PV System Specifications
Month
Solar Radiation
AC Energy
Energy Value
(kWh/m2/day)
(kWh)
(rupee)
1
6.56
7281
30143.34
2
7.07
6955
28793.70
3
8.05
8579
35517.06
4
8.63
8609
35641.26
5
8.49
8546
35380.44
6
7.89
7700
31878.00
7
6.23
6298
26073.72
DC Rating:
50.0 kW
DC to AC Derate Factor:
0.770
AC Rating:
38.5 kW
8
6.21
6379
26409.06
1-Axis Tracking
9
6.96
6926
28673.64
10
7.33
7588
31414.32
11
6.77
6953
28785.42
12
6.47
7028
29095.92
Year
7.22
88842
367805.88
Array Type: Array Tilt:
28.6°
Array Azimuth:
180.0°
Energy Specifications Energy Cost:
4.1400 rupee/kWh
Array Type: 2-Axis Tracking
Station Identification City:
New Delhi
Country/Province:
IND
Latitude:
28.58° N
Longitude:
77.20° E
Elevation:
216 m
Weather Data:
IWEC
PV System Specifications
Results Month
Solar Radiation
AC Energy
Energy Value
(kWh/m2/day)
(kWh)
(rupee)
1
7.02
7729
31998.06
2
7.29
7156
29625.84
3
8.13
8668
35885.52
4
8.80
8779
36345.06
5
8.94
8981
37181.34
6
8.51
8276
34262.64
7
6.60
6656
27555.84
DC Rating:
50.0 kW
DC to AC Derate Factor:
0.770
AC Rating:
38.5 kW
8
6.39
6557
27145.98
Array Type:
2-Axis Tracking
9
7.00
6975
28876.50
Array Tilt:
N/A
10
7.47
7720
31960.80
Array Azimuth:
N/A
11
7.18
7309
30259.26
12
7.04
7557
31285.98
Year
7.53
92362
382378.66
Energy Specifications Energy Cost:
4.1400 rupee/kWh
Energy Profit on the basis for New Delhi- electricity Prices – 4.14 Rupee/ Kwh i.e - Avg solar radiation – 6.02
Break Even Point (including subsidy) 1st case – 19 yrs 2nd case – 16.6 yrs 3rd care – 16 yrs
Estimated cost 85 Lakhs – based on normative cost Rs 17 Crore /Mw adopted by CERC notification Date 16th September.
50 Kw solar plant Specifications Area for SPV Plant – 450 sq mtrs SPV Power Plant -Output 50 kW p -No. of modules 180 -No. of modules in series 6 -No. of parallel combination 30 -DC BUS 1 No. Technical details of a SPV Module
(a) PV Module type - Poly crystalline - 180 modules - Rs 87/ watt -7 x 26 string x modules.
(b) Physical Dimensions -Length with frame 1957 mm -Width with frame 990 mm -Thickness 40 mm
(c)Electrical Parameter -Maximum Power Rating = 280 kWp -Rated Current = 7.93 A -Rated Voltage = 35.3 V -Short Circuit Current = 8.76 A -Open Circuit Voltage = 43.77 V Mounting Arrangement -Mounting Fixed Type -Surface azimuth angle of PV Module = 180o -Tilt angle (slope) of PV Module = 28.32o - Rs 49 Per Kg - MS Hot dip galvanized. - C/s “L” Section. Inverter specifications - 7 inverters - 97 % peak efficiency - UL certification (UL 1741/IEEE 1547) - Grid voltage 420 and 11kv supply - Max. DC power 8.6 Kw - Nominal volt = 345 v - AC nominal power = 7.6 Kw - AC voltage range 211 – 264 V 244 – 305 V -
Max. output current = 32 Max. efficiency = 96.3 % 96.5 %
Cables and Transformers - copper wiring - DC side 5 mm sq , loss = 0.55% - AC side 6 mm sq , loss 0.72% - Step up transformer 440v , 3ph , 50 Hz
COST OF GENERATION AND APPLICABLE TARIFF
Cost of Generation for Small Solar Systems
Summary of various parameter assumptions for the purpose of determination of year-to-year cost of generation and levellised tariff thereof, is presented under following table: (It is calculated for standard 1Mw capacity)
Table: Summary of Parameter assumptions Parameters
Unit
Value
Plant Capacity
MW
1
Capital Cost
Rs Lakh/ MW
1740
Useful life
years
25
Tariff Period
years
25
Debt : Equity
D:E
70 : 30
Debt component
Rs Lakh/MW
1218
Equity component
Rs Lakh/MW
522
Remarks
Parameters
Unit
Value
Remarks
Interest Rate
% p.a.
13.37%
SBAR (11.87%) + 150 basis points, (based on wt. avg. SBAR of 12.25% and 11.75% for the
Loan tenure
years
10
Depreciation
% p.a.
Return on equity
% p.a.
7% for first 10 years and 1.33% for remaining period of useful life 19% for initial 10 Pre-tax return on equity years and 24% for subsequent period
Discount rate
%
15.96%
Equivalent to WACC
Interest on working capital
% p.a.
12.87%
SBAR (11.87%) + 100 basis points, (based on wt. avg. SBAR of 12.25% and 11.75% for the
1 mth O&M expense
Working Capital requirement
Capacity Utilisation Factor
% p.a.
15% of O&M expense as maintenance spares and receivables of 2 months 18%
Operation Maintenance expense
Rs L/MW
11
Parameters
and
Unit
Escalation factor % p.a. for O&M expense
Value 5.72%
For FY 2010-11
Remarks
The Levellised Cost of Generation for rooftop PV and other small solar power projects, in accordance with the assumptions outlined above work out to Rs 19.57 /kWh.
Applicable Tariff (Proposed): Accordingly, it is proposed that Tariff for Small Solar Systems (< 1 MW) may be determined as Rs 19.57/kWh to be valid for period of 25 years from the date of commissioning provided that such small solar projects (<1 MW) are commissioned on or prior to March 31, 2012 in case of small solar PV and on or prior to March 31, 2013 in case of small solar thermal power projects.
Summary of Capital Cost Sr Components no..
Cost
1
Pv Modules
43.52 lakhs
2
Inverters
13.7 lakhs
3
Mounting structures
10.9 lakhs
4
Cables and Transformers
3.51 lakhs
5
Civil and generation cost
2.7 lakhs
6
Preliminary and pre-operative cost
5 lakhs
7
Operation and maintenance cost
0.60 lakhs escalates @ 5.72 % per year
8
TOTAL
Approximate 85 - 90 lakhs
*(Land Price and subsidy not included)
Subsidy :Grid connected – 25 lakhs according to Rs 70 / watt OR 27 lakhs according 30 % Capital cost (Lesser value is considered )
Reference : CERC “Central Electricity Regulatory Commission ”
