SOLAR POWER SYSTEM FEASIBILITY STUDY,AND REPORT FOR A MUSEUM Presented by Abiola Adeseko Hamid Mohseni Sandeep Tripuraneni Charan Reddy

OVERVIEW Introduction Background of study Technical Analysis Financial Analysis Recommendation

INTRODUCTION Figure 1: present state of the Museum rooftop in Boston.[1] [1] Google Earth

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.

SITE BASIC PARAMETERS Parameters Project typeCommercial Town locatedBoston State locatedMassachusetts Latitude Longitude Dry temperature Elevation from sea level151 ft Roof Access LocationStairwell Buildings number of storiesThree

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.

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

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.[ of charges]

TECHNICAL ANALYSIS Site characterization Recommended system size due to site constraints System overview 1-line diagram Datasheets of module and inverters Interconnection points.

SITE CHARACTERIZATION Figure 2: monthly irradiance of Boston in kW/m 2 /h[2] [2] Wikipedia.com/Boston/radiation.

SHADING CONSIDERATION OF SITE Figure 3: Shows the sun path with no shading [3] [3] Pvsyst Stimulation software.

ROOF ORIENTATION AND SHAPE Build orientation Roof orientation true south Roof azimuth Roof typeStructural concrete Total roof area34617 ft 2 Shading factorShade-free Total roof area2506 ft 2 Roof mount equipment and objectHeating ventilations, and air conditioning Roof top utilitiesWater line and Electricity Roof surfaceflat Table 2: Showing the basic characteristics of the roof.

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 65kW p

14 USABLE AREA

System Overview Figure 4 : Average amount of energy produce by 65kWp [4] [4] SAM (System Advisor Model

16 SIMULATION WITH DIALUX SOFTWARE

17 SIMULATION WITH DIALUX SOFTWARE

1-LINE ELECTRICAL DIAGRAM

SCHEDULE OF COMPONENT ComponentsComponents ManufacturerQuantity Solar PV modulesJinkoSolar, 290W p 220 Combiners boxesSolarbos2 DC-disconnectSolarbos2 InverterSolectria 60kW1 AC-disconnect Sunny D,HU364RB 200A 600V, 3- Pole 1 Racking systemPolar Bear

DATASHEETS FOR MODULE AND INVERTER Figure 5: Shows module data sheet

INVERTER’S DATASHEET SpecificationsPVI 60KW DC Input Absolute Maximum Input Voltage600 VDC MPPT Input Voltage Range VDC MPPT Input Voltage Range-Low Voltage Option VDC Maximum Operating Input Current211 A Maximum Operating Input Current-Low Voltage Option222 A Strike Voltage400 V Strike Voltage-Low Voltage Option380 V AC Output Nominal Output Voltage480VAC AC Voltage Range(Standard)-12%/+10% Continuous Output Power60 kW Continuous output current480 VAC72 A Max. Back feed Current0 A Nominal Output Frequency60 Hz Output Frequency Range Hz Power Factor1.0 Total Harmonic Distortion(THD)<3%

FINANCIAL ANALYSIS Installation cost Hard cost Soft cost Available intensive Net system cost

FINANCIAL ANALYSIS Hard Costs(All components costs) Overall hard costs = 2.20 $/w Total hard costs for the system = $ 143, 000 $ 0.52 per watt

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 $ 0.7 per watt

Total system cost =$ 292, 500

 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

Modified Accelerated Cost Recovery System (MACRS):- Assigned property class- 5 Years YearAccepted Depreciation Rate Tax Deduction Cash Benefit of Depreciation 1 st Yr20%$ 49,725$ 17, nd Yr32%$ 79,560$ 27,846 3 rd Yr19.2%$ 47,736$ 16, th Yr11.5%$ 28,591.87$ 10, th Yr11.5%$ 28,591.87$ 10, th Yr5.8%$ 14,420.25$ 5,047.08

Operation & Maintenance Costs: 0.25%($ 732) Avoided Energy: unit energy cost* Annual energy produce For 1 st Year- $ 13,747.36

NET PRESENT VALUE(NPV) MODEL

DIFFERENT SCENARIOS Scenario 1: (Conservative) Simple Pay Back 15.9 years Cash flow over loan term $ 41, NPV -$5,872.19

Scenario 2: (Likely) Simple Pay Back 5.6 years Cash flow over loan term $ 270, NPV $ 199,956.18

Scenario 3: (Optimistic) Simple Pay Back 5.3 years Cash flow over loan term $ 292, NPV $ 234,511.31

Conclusion Museum has potential to produce 25% energy from PV system which can be achieved by installing the proposed 65kW PV system.