solar power system feasibility study,and report for a museum presented by abiola adeseko hamid...
TRANSCRIPT
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SOLAR POWER SYSTEM FEASIBILITY STUDY,AND REPORT FOR A MUSEUM
Presented byAbiola AdesekoHamid Mohseni
Sandeep TripuraneniCharan Reddy
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OVERVIEW
• Introduction• Background of study• Technical Analysis• Financial Analysis• Recommendation
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INTRODUCTION
Figure 1: present state of the Museum rooftop in Boston.[1][1] Google Earth
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GOALS OF THE REPORT
• To research and report the feasibility and associated benefit for the museum installing PV system.
• To determine the best location for installation• To determine the cost associated for the
museum by installing a PV system to meet 25 percent of energy need.
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SITE BASIC PARAMETERS
Parameters
Project type Commercial
Town located Boston
State located Massachusetts
Latitude 42.32
Longitude -75W
Dry temperature 10.3
Elevation from sea level 151 ft
Roof Access Location Stairwell
Buildings number of stories Three
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OWNER’S RATIONALE
• To save cost by reducing energy consumption• To promote renewable energy among
the museum audience• To have a renewable source of
energy.
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BUDGET
• 50% of the project will be loan collected from a financing agent (Bank) and the museum will supply the remaining cost• The total amount put forth was
approximately 300,000 dollars
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SERVICING UTILITY
• Purchase it energy from National Grid• Rate of 0.15 dollars per kilowatt hour• Annual energy consumed is estimated as • Under the rate Large General, Time of Use
(TOU), (SC-3A) “when the monthly demand exceeded 2000 kilowatt in any two consecutive for 12 months.[www.nationalgrid.com/rate of charges]
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TECHNICAL ANALYSIS
• Site characterization• Recommended system size due to site
constraints• System overview• 1-line diagram• Datasheets of module and inverters• Interconnection points.
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SITE CHARACTERIZATION
Figure 2: monthly irradiance of Boston in kW/m2/h[2][2] Wikipedia.com/Boston/radiation.
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SHADING CONSIDERATION OF SITE
Figure 3: Shows the sun path with no shading [3] [3] Pvsyst Stimulation software.
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ROOF ORIENTATION AND SHAPE
Build orientation
Roof orientation true south
Roof azimuth 180
Roof type Structural concrete
Total roof area 34617 ft2
Shading factor Shade-free
Total roof area 2506 ft2
Roof mount equipment and object Heating ventilations, and air conditioning
Roof top utilities Water line and Electricity
Roof surface flat
Table 2: Showing the basic characteristics of the roof.
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RECOMMENDED SYSTEM SIZE
• Due to availability of roof-mount utilities, there wasn't enough roof on the museum for our installation, we recommended a system size of 65kWp
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USABLE AREA
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System Overview
Figure 4: Average amount of energy produce by 65kWp [4][4] SAM (System Advisor Model
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SIMULATION WITH DIALUX SOFTWARE
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SIMULATION WITH DIALUX SOFTWARE
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1-LINE ELECTRICAL DIAGRAM
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SCHEDULE OF COMPONENTComponents Components Manufacturer Quantity
Solar PV modules JinkoSolar, 290Wp220
Combiners boxes Solarbos 2
DC-disconnect Solarbos 2
Inverter Solectria 60kW 1
AC-disconnect Sunny D,HU364RB 200A 600V, 3-
Pole
1
Racking system Polar Bear 111 220
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DATASHEETS FOR MODULE AND INVERTER
Figure 5: Shows module data sheet
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INVERTER’S DATASHEETSpecifications PVI 60KW
DC Input
Absolute Maximum Input Voltage 600 VDC
MPPT Input Voltage Range 300-500 VDC
MPPT Input Voltage Range-Low Voltage Option 285-500 VDC
Maximum Operating Input Current 211 A
Maximum Operating Input Current-Low Voltage Option 222 A
Strike Voltage 400 V
Strike Voltage-Low Voltage Option 380 V
AC Output
Nominal Output Voltage 480VAC
AC Voltage Range(Standard) -12%/+10%
Continuous Output Power 60 kW
Continuous output current 480 VAC 72 A
Max. Back feed Current 0 A
Nominal Output Frequency 60 Hz
Output Frequency Range 57.0-60.5 Hz
Power Factor 1.0
Total Harmonic Distortion(THD) <3%
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FINANCIAL ANALYSIS
• Installation cost• Hard cost• Soft cost• Available intensive• Net system cost
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FINANCIAL ANALYSIS
• Hard Costs(All components costs)
Overall hard costs = 2.20 $/wTotal hard costs for the system = $ 143, 000
Hard Costs
$ 1 per watt
$ 0.68 per watt
$ 0.52 per watt
Hard Costs
Panel costs
Inverte costs
BoS
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• Soft Costs:Normally these include permits, labour costs, cost
to design the system , customer acquisition.
Overall soft costs : 2.30 $/w Total soft costs for the system: $ 149,500
Soft Costs
pi and marketingLaborOverhead
$ 0.9 per watt
$ 0.7 per watt
$ 0.7 per watt
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• Total system cost = $ 292, 500
Cost per Watt
Hard CostsSoft Costs
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Applicable Incentives:-
Federal Tax Incentives:
-Business Energy Investment
Tax Credit(ITC): 30%($ 87,750)Net system cost: $ 204,750 Other types of incentives:-
SREC’s: 85 (for annual energy production of 85,921 kWh)
SREC auction value: $ 274
Income due to SREC’s:$ 23,290
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Modified Accelerated Cost Recovery System (MACRS):-
Assigned property class- 5 YearsYear Accepted
Depreciation Rate
Tax Deduction Cash Benefit of
Depreciation1st Yr 20% $ 49,725 $ 17,403.752nd Yr 32% $ 79,560 $ 27,8463rd Yr 19.2% $ 47,736 $ 16,707.64th Yr 11.5% $ 28,591.87 $ 10,007.155th Yr 11.5% $ 28,591.87 $ 10,007.156th Yr 5.8% $ 14,420.25 $ 5,047.08
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• Operation & Maintenance Costs: 0.25%($ 732)• Avoided Energy: unit energy cost* Annual energy
produce
For 1st Year- $ 13,747.36
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NET PRESENT VALUE(NPV) MODEL
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DIFFERENT SCENARIOS
• Scenario 1: (Conservative)
Simple Pay Back 15.9 years
Cash flow over loan term
$ 41,987.06
NPV -$5,872.19
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• Scenario 2: (Likely)
Simple Pay Back 5.6 years
Cash flow over loan term
$ 270,936.45
NPV $ 199,956.18
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• Scenario 3: (Optimistic)
Simple Pay Back 5.3 years
Cash flow over loan term
$ 292,661.58
NPV $ 234,511.31
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Conclusion
• Museum has potential to produce 25% energy from PV system which can be achieved by installing the proposed 65kW PV system.
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Questions?