Sunkalp Energy walks you through the benefits of Solar Power for schools- including safeguarding against increasing energy tariff, reducing diesel and eliminating electricity bill.

1. Solar Energy in Schools:
Benefits & Examples
21st Nov, CII Green Building Congress
Kanika Khanna
Director

2. About Sunkalp Energy
Certifications:
Culture of technically sound
design and installation, headed
by technologists from MIT
A guarantee of quick response
to all your queries and service
requests for zero downtime
Financial guarantee on your
solar plant’s generation to
ensure return on your
investment
` Host of financing options
available that fit most customer
needs and plant sizes
Rate contracts with Tier I
international manufacturers for
best quality components
Stress free project execution as
we take care of approvals from
authorities such as MNRE.
Headquarters
107 Rectangle-1,
D-4 District Centre
Saket,
New Delhi 110017
011-41620247 |
sunkalp.com
Sunkalp is a unit of the diversified
Bhagwan Dass Khanna group which
has been in business since 1929. We
provide data propelled engineering,
procurement and construction
with extremely active after sales
support for solar power plants that last
25 years. We specialize in turnkey solar
power plants.

3. Generation Matches Consumption

4. Typical Load Cycle for a School
St. Mary’s School, Delhi
 Non AC
 Connected load: 100 kW
 1.6 acre built up area
 2500 students
Daily consumption: 318 units
Monthly Bill: 86,000
-30
-20
-10
0
10
20
30
40
50
60
70
12:00AM
1:00AM
2:00AM
3:00AM
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6:00AM
7:00AM
8:00AM
9:00AM
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2:00PM
3:00PM
4:00PM
5:00PM
6:00PM
7:00PM
8:00PM
9:00PM
10:00PM
11:00PM
Load Consumption kW Apr

5. Typical Load Cycle for a School
-30
-20
-10
0
10
20
30
40
50
60
70
12:00AM
1:00AM
2:00AM
3:00AM
4:00AM
5:00AM
6:00AM
7:00AM
8:00AM
9:00AM
10:00AM
11:00AM
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1:00PM
2:00PM
3:00PM
4:00PM
5:00PM
6:00PM
7:00PM
8:00PM
9:00PM
10:00PM
11:00PM
Load Consumption kW Apr
Solar
St. Mary’s School, Delhi
 Non AC
 Connected load: 100 kW
 1.6 acre built up area
 2500 students
Add 50 kW Solar plant
Daily consumption: 318 units
Monthly Bill: 86,000

6. Daily consumption:
318 24 units
Monthly Bill: 6,500
St. Mary’s School, Delhi
 Non AC
 Connected load: 100 kW
 1.6 acre built up area
 2500 students
Add 50 kW Solar plant
Typical Load Cycle for a School
-30
-20
-10
0
10
20
30
40
50
60
70
12:00AM
1:00AM
2:00AM
3:00AM
4:00AM
5:00AM
6:00AM
7:00AM
8:00AM
9:00AM
10:00AM
11:00AM
12:00PM
1:00PM
2:00PM
3:00PM
4:00PM
5:00PM
6:00PM
7:00PM
8:00PM
9:00PM
10:00PM
11:00PM
Load Consumption kW Apr
-47
-16
87

7. Typical Load Cycle for a School
0
5,000
10,000
15,000
20,000
25,000
Units(kWh)
The Indian School Year2012 Billed Units
Year2013 Billed Units
Year2014 Billed Units
Year2015 Billed Units
The Indian School, Delhi
 Non AC
 Connected load: 110 kW
 2 acre built up area
 2200 students
-5,000
0
5,000
10,000
15,000
20,000
25,000
Units(kWh)
The Indian School Year2012 Billed Units
Year2013 Billed Units
Year2014 Billed Units
Year2015 Billed Units

8. Typical Load Cycle for a School
The Indian School, Delhi
 Non AC
 Connected load: 110 kW
 2 acre built up area
 2200 students
 Add 70 kW Solar
-5,000
0
5,000
10,000
15,000
20,000
25,000
Units(kWh)
The Indian School Year 2012 Billed Units
Year 2013 Billed Units
Year 2014 Billed Units
Year 2015 Billed Units
Predicted Solar Output

9. -5,000
0
5,000
10,000
15,000
20,000
25,000
Units(kWh)
The Indian School Year2014 Billed Units
Predicted Solar Output
Post Solar Consumption
Typical Load Cycle for a School
The Indian School, Delhi
 Non AC
 Connected load: 110 kW
 2 acre built up area
 2200 students
Annual consumption:
1,50,000 21,000 units

10. Safeguard Against Increasing Tariffs
Grid tariffs are hiked each
year, as subsidies are
removed from coal based
electricity.
 Expect grid electricity
bills to double in 4 years
 Solar power provides an
opportunity to freeze
and eventually eliminate
electricity bills.
Sample graph for total effective grid tariffs
4.00
6.00
8.00
10.00
12.00
14.00
Nov-10 Apr-12 Aug-13 Dec-14 May-16 Sep-17
17%
CAGR

11. Quick Returns
Sardar Patel Vidyalaya, Delhi

12. Quick Returns
-30,00,000
-20,00,000
-10,00,000
-
10,00,000
20,00,000
30,00,000
40,00,000
50,00,000
60,00,000
70,00,000
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
Cumulative CashFlow
Sardar Patel Vidyalaya, Delhi
 Non AC
 Connected load: 96 kW
 30 kW solar plant
 10 year IRR = 21%

13. Time of Day Benefit
-94
-33
The Indian School, Delhi
 Non AC
 Connected load: 110 kW
 2 acre built up area
 2200 students

14. Mitigate Need for Load Expansion
The Indian School, Delhi
Added few classrooms
Needed additional load of 40 kW
 Avoided load expansion by adding 70 kW solar to support peak loads
 Saved on fixed demand charges

15. Reduce Diesel Consumption
Schiller School, Ghaziabad
 Non AC
 Connected load: 110 kW
 2 acre built up area
 2200 students
0
20
40
60
80
100
120
12:00AM
1:00AM
2:00AM
3:00AM
4:00AM
5:00AM
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8:00AM
9:00AM
10:00AM
11:00AM
12:00PM
1:00PM
2:00PM
3:00PM
4:00PM
5:00PM
6:00PM
7:00PM
8:00PM
9:00PM
10:00PM
11:00PM
Diesel Genset-
Cummins 200 kVA
Solar
71 89
150

16. 0
20
40
60
80
100
120
12:00AM
1:00AM
2:00AM
3:00AM
4:00AM
5:00AM
6:00AM
7:00AM
8:00AM
9:00AM
10:00AM
11:00AM
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1:00PM
2:00PM
3:00PM
4:00PM
5:00PM
6:00PM
7:00PM
8:00PM
9:00PM
10:00PM
11:00PM
Diesel Genset-
Cummins 200 kVA
Solar
After Solar
Reduce Diesel Consumption
Schiller School, Ghaziabad
 Non AC
 Connected load: 110 kW
 2 acre built up area
 2200 students
 Add 50 kW Solar

17. 0
10
20
30
40
50
60
70
80
0 50 100 150 200 250 300
L/hr
ConnectedLoad
Diesel Consumption- Schiller School
Load
With Solar
Efficiency Curve
28 lt/ hr
15 lt/ hr
Reduce Diesel Consumption
With the use of solar:
Diesel load goes down from
100 kVA to 60 kVA.
consumption becomes half:
from 28 lt/hr to 15 lt/hr
Daily diesel consumed
reduces from 100 + lt/ day to
60 lt/day.

18. 0
10
20
30
40
50
60
70
80
0 50 100 150 200 250 300
L/hr
ConnectedLoad
Diesel Consumption- Schiller School
Load
With Solar
Efficiency Curve
28 lt/ hr
15 lt/ hr
Reduce Diesel Consumption
Schiller School, Ghaziabad
Daily Savings of 40 lts or Rs
2,500
Additional 160 units from grid
Used to procure 200 lts of
diesel every 2nd day, now will
need to procure every 4th day

19. Energy Access
Govt. School, Haryana

20. Energy Access
Chandu Govt School, Haryana
 Only 50 kms from Delhi
Extensive power outages upto 12
hours
 DG provided by Govt but no diesel
 Added 2 kW plant
 Runs all fans and lights

21. Set an Example
St Mary’s School, Delhi

22. Set an Example
Manav Rachna School, Ggn

23. Cooler Classrooms
The Indian School, Delhi

24. Thank You for Listening
Kanika Khanna
Sunkalp Energy
kanika@sunkalp.com