pv solar grid connect solar design

Simon Field

Company

Now Energy

Innovation House Technology Park SA 5095 Australia Contact Person: Andreas Boeck Phone: 1300685774 Fax: 08 81256596 Mail: [email protected]

Client

93 Glendale Avenue Flagstaff Hill SA 5159 Australia Contact Person: Simon Field Phone: 83017736 Mail: [email protected]

Project

Address: Start of Operation Date: 21/03/2014 Project description: Residential PV

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Project Designer: Andreas Boeck Company: Now Energy

Project Number: 140002 Date of Offer: 21/03/2014

PV*SOL advanced 6.0 (R6) Dr. Valentin EnergieSoftware GmbH

Grid connected PV System with Electrical Appliances - Net Metering

City Flagstaff Hill Climate Data Flagstaff Hill PV Generator Output 3 kWp Generator Surface 20 m² Number of PV Modules 12 Number of Inverter 1

The yield

PV Generator power (AC grid) 4,623 kWh Own Use 2,534 kWh Annual Grid Feed-in 2,089 kWh Spec. Annual Yield 1,541 kWh/kWp Performance Ratio (PR) 82.4 % Own Power Consumption 54.8 % CO₂ Emissions avoided 2,766 kg / year

Your Gain

Total investment costs 5,600.00 $ Return on assets 0.00 % Amortization Period More than 3 Years Electricity Production Costs $0.33 The results have been calculated with a mathematical model calculation from Dr. Valentin EnergieSoftware GmbH (PV*SOL algorithms). The actual yields from the solar power system may differ as a result of weather variations, the efficiency of the modules and inverter, and other factors.

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Set-up of the system

City Flagstaff Hill Climate Data Flagstaff Hill Type of System Grid connected PV System with Electrical Appliances - Net

Metering

Consumption

Total Consumption 7629 kWh Peak Consumption 10.2 kW

Solar Generator

Module Area Module Area 1 Solar Modules* 12 x JKM250P-60 Manufacturer Jinko Solar Inclination 22 ° Orientation Northwest (315 °) Installation Type Mounted - Roof Generator Surface 20 m²

Losses

Shading 0 % Remaining power after 25 Years 80 %

Figure: Degradation of Module of Module Area 1

Inverter

Module Area Module Area 1 Inverter 1* 1 x PVI-3,0-OUTD Manufacturer Power-One Configuration MPP 1: 1 x 6 | MPP 2: 1 x 6

AC Mains

Number of Phases 1 Mains Voltage (1-phase) 230 V Displacement Power Factor (cos φ) +/- 1

Cable

Total Loss 0.66 %

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* The guarantee provisions of the respective manufacturer apply

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Simulation results

PV System

PV Generator Output 3 kWp Spec. Annual Yield 1,541 kWh/kWp Performance Ratio (PR) 82.4 % PV Generator power (AC grid) 4,623 kWh/year Own Use 2,534 kWh/year Annual Grid Feed-in 2,089 kWh/year Maximum Feed-in Power Clipping 0 kWh/year Own Power Consumption 54.8 % CO₂ Emissions avoided 2,766 kg / year

Consumer

Consumption 7,629 kWh/year Stand-by Consumption 14 kWh/year Total Consumption 7,642 kWh/year covered by solar power 2,534 kWh/year covered by grid 5,108 kWh/year Solar Fraction 33.2 %

Figure: Production Forecast with consumption

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PV System Energy Balance

Global radiation - horizontal 1,791.3 kWh/m²

Deviation from standard spectrum -17.91 kWh/m² -1.00 %

Orientation and inclination of the module surface 91.26 kWh/m² 5.15 %

Shading 0.00 kWh/m² 0.00 %

Reflection on the Module Interface -81.92 kWh/m² -4.39 %

Global Radiation at the Module 1,782.8 kWh/m²

1,782.8 kWh/m² x 19.64 m² = 35,016.4 kWh

Global PV Radiation 35,016.4 kWh

Soiling 0.00 kWh 0.00 %

STC Conversion (Rated Efficiency of Module 15.28%) -29,665.92 kWh -84.72 %

Rated PV Energy 5,350.4 kWh

Part Load -15.22 kWh -0.28 %

Temperature -347.39 kWh -6.51 %

Diodes -24.94 kWh -0.50 %

Mismatch (Manufacturer Information) -99.26 kWh -2.00 %

Mismatch (Wiring/Shading) 0.00 kWh 0.00 %

String Cable -5.20 kWh -0.11 %

PV Energy (DC) without inverter regulation 4,858.4 kWh

Regulation on account of the MPP Voltage Range 0.00 kWh 0.00 %

Regulation on account of the max. DC Current 0.00 kWh 0.00 %

Regulation on account of the max. DC Power 0.00 kWh 0.00 %

Regulation on account of the max. AC Power/cos phi 0.00 kWh 0.00 %

MPP Matching -10.51 kWh -0.22 %

PV energy (DC) 4,847.9 kWh

Energy at the Inverter Input 4,847.9 kWh

Input voltage deviates from rated voltage -32.26 kWh -0.67 %

DC/AC Conversion -184.28 kWh -3.83 %

Stand-by Consumption -13.55 kWh -0.29 %

Regulation of Radiation Peaks -2.11 kWh -0.05 %

AC Cable -6.21 kWh -0.13 %

Solar energy (AC) minus standby use 4,609.5 kWh

PV Generator power (AC grid) 4,623.1 kWh

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Financial Analysis

System Data

PV Generator Output 3 kWp Start of Operation of the System 21/03/2014 Assessment Period 3 Years

Payment overview

Total investment costs 5,600.00 $ Total investment costs 1,866.67 $/kWp Incoming Subsidies 0.00 $ One-off Payments 0.00 $ Annual Costs 0.00 $/year Other revenue or savings 0.00 $/year

Remuneration and savings

First year remuneration 106.62 $ Specific Feed-in Remuneration 0.0513 $/kWh First year savings 907.78 $

Economic Parameters

Return on assets 0.00 % Accrued Cash Flow (Cash Balance) -2,185.30 $ Amortization Period More than 3 Years

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Figure: Accrued Cash Flow (Cash Balance)

Figure: Electricity Cost Trend (Price Increase Rate 2 %)

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Cashflow Table

Position year 1 year 2 year 3 Investments -$5,600.00 $0.00 $0.00 $0.00 Feed-in / export tariff $73.51 $99.96 $0.00 $0.00 Electricity Savings $695.99 $863.65 $848.35 $833.26 Annual Cash Flow -$4,830.51 $963.60 $848.35 $833.26 Accrued Cash Flow (Cash Balance) -$4,830.51 -$3,866.91 -$3,018.56 -$2,185.30

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PV Module: JKM250P-60

Manufacturer Jinko Solar Available Yes

Electrical Data

Cell Type Si polycrystalline Only Transformer Inverters suitable No Number of Cells 60 Number of Bypass Diodes 3

Mechanical Data

Width 992 mm Height 1650 mm Depth 40 mm Frame Width 11 mm Weight 18.5 kg Framed No

I/V Characteristics at STC

MPP Voltage 30.5 V MPP Current 8.2 A Output 250 W Open Circuit Voltage 37.5 V Short-Circuit Current 8.76 A Increase open circuit voltage before stabilisation 0 %

I/V Part Load Characteristics

Values source Manufacturer/user-created Irradiation 400 W/m² Voltage in MPP at Part Load 30.502 V Current in MPP at Part Load 3.343 A Open Circuit Voltage (Part Load) 36.171 V Short Circuit Current at Part Load 3.616 A

Further

Voltage Coefficient -116.25 mV/K Electricity Coefficient 5.26 mA/K Output Coefficient -0.41 %/K Incident Angle Modifier 95 % Maximum System Voltage 1000 V Spec. Heat Capacity 920 J/(kg*K) Absorption Coefficient 70 % Emissions Coefficient 85 %

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Inverter: PVI-3,0-OUTD

Manufacturer Power-One Available Yes

Electrical Data

DC Power Rating 3.12 kW AC Power Rating 3 kW Max. DC Power 3.5 kW Max. AC Power 3.3 kW Stand-by Consumption 7 W Night Consumption 2 W Feed-in from 10 W Max. Input Current 20 A Max. Input Voltage 600 V Nom. DC Voltage 345 V Number of Feed-in Phases 1 Number of DC Inlets 2 With Transformer No Change in Efficiency when Input Voltage deviates from Rated Voltage

0.4 %/100V

MPP Tracker

Output Range < 20% of Power Rating 99.5 % Output Range > 20% of Power Rating 99.8 % No. of MPP Trackers 2 Max. Input Current per MPP Tracker 10 A Max. recommended Input Power per MPP Tracker 2 kW Min. MPP Voltage 90 V Max. MPP Voltage 580 V

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