Solar Energy in Schools:Benefits & Examples21st Nov, CII Green Building Congress
Kanika KhannaDirector
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.
Headquarters107 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.
Generation Matches Consumption
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 unitsMonthly Bill: 86,000
-30
-20
-10
0
10
20
30
40
50
60
70
12:0
0 AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:0
0 AM
11:0
0 AM
12:0
0 PM
1:00
PM
2:00
PM
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:0
0 PM
11:0
0 PM
Load Consumption kW Apr
Typical Load Cycle for a School
-30
-20
-10
0
10
20
30
40
50
60
70
12:0
0 AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:0
0 AM
11:0
0 AM
12:0
0 PM
1:00
PM
2:00
PM
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:0
0 PM
11:0
0 PM
Load Consumption kW Apr
SolarSt. Mary’s School, Delhi Non AC Connected load: 100 kW 1.6 acre built up area 2500 studentsAdd 50 kW Solar plant
Daily consumption: 318 unitsMonthly Bill: 86,000
Daily consumption:318 24 unitsMonthly Bill: 6,500
St. Mary’s School, Delhi Non AC Connected load: 100 kW 1.6 acre built up area 2500 studentsAdd 50 kW Solar plant
Typical Load Cycle for a School
-30
-20
-10
0
10
20
30
40
50
60
70
12:0
0 AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:0
0 AM
11:0
0 AM
12:0
0 PM
1:00
PM
2:00
PM
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:0
0 PM
11:0
0 PM
Load Consumption kW Apr
-47-16
87
Typical Load Cycle for a School
0
5,000
10,000
15,000
20,000
25,000
Units
(kW
h)
The Indian School Year 2012 Billed Units
Year 2013 Billed Units
Year 2014 Billed Units
Year 2015 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
(kW
h)
The Indian School Year 2012 Billed Units
Year 2013 Billed Units
Year 2014 Billed Units
Year 2015 Billed Units
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
(kW
h)
The Indian School Year 2012 Billed UnitsYear 2013 Billed UnitsYear 2014 Billed UnitsYear 2015 Billed UnitsPredicted Solar Output
-5,000
0
5,000
10,000
15,000
20,000
25,000
Units
(kW
h)
The Indian School Year 2014 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
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
Quick Returns
Sardar Patel Vidyalaya, Delhi
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 Cash Flow
Sardar Patel Vidyalaya, Delhi Non AC Connected load: 96 kW 30 kW solar plant 10 year IRR = 21%
Time of Day Benefit
-94-33
The Indian School, Delhi Non AC Connected load: 110 kW 2 acre built up area 2200 students
Mitigate Need for Load Expansion
The Indian School, DelhiAdded few classroomsNeeded additional load of 40 kW Avoided load expansion by adding 70 kW solar to support peak loads Saved on fixed demand charges
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
12:0
0 AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:0
0 AM
11:0
0 AM
12:0
0 PM
1:00
PM
2:00
PM
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:0
0 PM
11:0
0 PM
Diesel Genset-Cummins 200 kVA
Solar
71 89150
0
20
40
60
80
100
120
12:0
0 AM
1:00
AM
2:00
AM
3:00
AM
4:00
AM
5:00
AM
6:00
AM
7:00
AM
8:00
AM
9:00
AM
10:0
0 AM
11:0
0 AM
12:0
0 PM
1:00
PM
2:00
PM
3:00
PM
4:00
PM
5:00
PM
6:00
PM
7:00
PM
8:00
PM
9:00
PM
10:0
0 PM
11:0
0 PM
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
0
10
20
30
40
50
60
70
80
0 50 100 150 200 250 300
L/hr
Connected Load
Diesel Consumption- Schiller School
Load
With Solar
Efficiency Curve28 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/hrDaily diesel consumed reduces from 100 + lt/ day to 60 lt/day.
0
10
20
30
40
50
60
70
80
0 50 100 150 200 250 300
L/hr
Connected Load
Diesel Consumption- Schiller School
Load
With Solar
Efficiency Curve28 lt/ hr
15 lt/ hr
Reduce Diesel Consumption
Schiller School, GhaziabadDaily Savings of 40 lts or Rs 2,500Additional 160 units from gridUsed to procure 200 lts of diesel every 2nd day, now will need to procure every 4th day
Energy Access
Govt. School, Haryana
Energy Access
Chandu Govt School, Haryana Only 50 kms from DelhiExtensive power outages upto 12 hours DG provided by Govt but no diesel Added 2 kW plant Runs all fans and lights
Set an Example
St Mary’s School, Delhi
Set an Example
Manav Rachna School, Ggn
Cooler Classrooms
The Indian School, Delhi