10KWp Solar Rooftop System

10 KWp SOLAR PV ROOFTOP SYSTEM PROPOSAL

Ref: PEPL/10-11/PV/682 M/s Ace Controltech Services Ltd

Date: 21- February ‘11

Dear Sir, Sub: Comprehensive Proposal for 10 KWp Roof top Solar PV System. With reference to your query, we are pleased to submit herewith our comprehensive proposal of the Technical & Commercial overview, for your kind perusal. A. System Definition Size 10 kWp total DC capacity 50 nos. 200-watt panels (To be procured globally from leading international vendors like Photon Energy, BP Solar, Solar Semiconductor etc.) Energy Production Site location: New Delhi Site Co-ordinates: 28.40 N; 76.59 E Tilt Angle: South 30.3o Averaged radiation: 5.62 kW-hours/m2/day Number of full production days assumed per year: 330 PVSyst Based Statistics:Expected Annual production: 14.75 MW-hours (As per simulations) Note: Energy production projections are reasonably accurate estimates based on site’s solar data and our experience with similar systems. Exergy makes no guarantees as to actual production output from this system. Grid/Load Interfacing Solar system output shall be connected to a suitable load bus capable of taking the input. This input point shall be selected in field in consultation with client’s Executive Engineer.

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B. System Components Solar Panels Note: Subject to availability at installation time, a different panel from a leading vendor may be selected without affecting system size and performance.

Make: Solar Semiconductor/ Photon Energy/ Tata BP Solar Model: SSI-M6-200 Quantity: 50 Wattage: 200 W No. of Cells: 60 Voc: 37.1 V Isc: 8.28 A Vmp: 29.6 V Imp: 7.6 A Dimensions: 1660X990X42 (mm) Weight: 20 kg Operating Conditions: -40 to +90 C Maximum System Voltage: 600 Vdc

Inverter Note: Subject to availability at installation time, a different inverter may be selected without affecting system size and performance.

SMA Sunny Tripower 10000TL/ Delta Inverters Quantity: 1 AC maximum output: 10 KW MPP voltage range : 360 – 800 V Maximum current input DC/String : 33A Maximum efficiency : >98.1% Power connection : 3-phase We may take any other reputed make with efficiency > 95%.

Mounting Structures

Panels shall be mounted on galvanized frames inclined at 30.3 degrees to the south. The structure is designed in such a manner that module can be replaced easily and in line with site requirements and it is easy to install and service in future. The frames will be supported by angle legs of suitable lengths to provide the pre-determined inclination. All fasteners, nut and bolts are made of Stainless steel - SS 304 5.4.6 PCC. The structures shall be pre engineered to meet special requirements of placing the modules on the corrugated rooftops. FOUNDATION BASE: The legs of the structures made with GI angles are made of fixed and grouted in the PCC foundation columns made with 1:2:4 cement concrete.

Electrical Accessories

Solar Photovoltaic Proposal

Cables will conform to IS 694 and shall be of 650 V/ 1.1 kV grade. Interconnections, array to junction boxes, junction boxes to DCDB, DCDB to PCU etc will be selected to keep voltage drop and losses to the minimum. The bright annealed 99.97% pure bare copper conductors offer low conductor resistance, Page 2

result in lower heating thereby increasing cable life and efficiency.. These wires are insulated with a special grade PVC compound formulated and manufactured in-house. Working voltage: up to 1100 V Temperature range: -15 deg C to +70 deg C Sizes: Suitable sizes Color codes: Red, Yellow, Black, Blue, Green Battery

None

Energy Meter

The Inverter shall have a built-in meter that tracks energy production and displays it on a small LED screen. The display can be used to determine real-time production, daily production, and yearly production. For more sophisticated analysis and visual data management, Solar Access modules can be included.

Remote Monitoring System

The Sunny Web Box continuously records and stores all available data of about 50 inverters in real time, in addition the inverter parameters can be requested and modified. It provides you with various modern data processing options for professional data management. These are saved in conventional CSV or XML file formats. The ability to exchange data by FTP allows you to easily transfer these values to your PC. You can just as easily use an SD card to save your data. Any such feature of remote monitoring shall be made available through additional costs.

Stringing Design

5 strings of 10 panels each, however a detailed engineering might change the stringing design. In case Inverter configuration needs any modifications, based on its availability, the string layout may be modified accordingly.

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C. Bill of Material S.No

Component

Type/Model No

Specifications

1

PV Modules

SSI-M6 200/ Solar Semiconductor

50

2

Grid Tie Inverter

SMA, Sunny Tripower 10000TL; Solivia 10 TL Central/ String Inverters

1

3

Mounting Structure

Custom made

MS hot dip galvanized steel

1Set

4

Field Junction Box

ABB Junction Boxes

IP65 standards

As per stringing design

5

Main Junction Box

ABB Junction Boxes

IP65 standards

As per stringing design

6

Earthing Kit

Reputed make

1 set

7

Lightening Arrestors

Reputed make

1 set

8

AC & DC cables

Conforming to BOS

As per site requirements

9

Ground Fault Protection System

10

Remote Monitoring System

Included in the inverter Sunny Web Box

Quantity

1 NA

D. Solar PV Plot Plan

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E. Installation Details Area required: The Total Area required for the System Installation shall be apx 1200 -1400 sq feet, without any shades, facing south. Structural Anchoring: Panels shall be mounted on galvanized frames inclined at 30.3 degrees to the south. The structure is designed in such a manner that module can be replaced easily and in line with site requirements and it is easy to install and service in future. The frames will be supported by angle legs of suitable lengths to provide the pre-determined inclination. All fasteners, nut and bolts are made of Stainless steel - SS 304 5.4.6 PCC. Foundation Base: The legs of the structures made with GI angles are made of fixed and grouted in the PCC foundation columns made with 1:2:4 cement concrete. Actual frame and other structural dimensions will be determined during a more detailed site visit by specialists during full design phase.

Inverter Installation Based on the initial site visit, the inverters could possibly be installed on the terrace. This space provides ample accessibility and good air circulation. The inverter is available in IP54 housing, however, an enclosed space has to be provided for the same. Actual installation location and methods will be determined during full design phase. Electrical Proposed fire hose shaft will be used for running electrical cables down to the electrical panel room. A detailed electrical design with single-line diagram and specifications will be prepared during full design phase after receiving the PO, for the client’s approval.

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F. Scope of Work 1. We shall conduct a detailed site visit with specialists to take accurate measurements, photographs, and other site-specific information for full design. 2. Prepare full system design to include civil, structural, electrical and mechanical components, with construction drawings and specifications. 3. Procure equipment and materials and deliver to site. 4. Perform complete system installation. 5. Test all electrical components in accordance with manufacturer instructions. 6. Commission the system to full operability. G. Client Scope Site-specific considerations will require assistance and cooperation from the client, as outlined below: 1. 2. 3. 4. 5. 6.

Provide access to work site for delivery of equipment and materials prior to and during project implementation. Provide a suitable and secure space for storage of equipment and materials. Facilitate access of work crew to the work site 7 days a week. Facilitate interfacing with the client’s resident engineering staff for consultation as needed. Separate electrical loads as discussed in Part A (Grid Interfacing) and connect solar output to building load system. All the Statutory clearances, if any, required for the Project. H. Delivery Schedule & Project Cost

Installation & Commissioning All the Systems except Inverter, will be installed within 8-10weeks from the date of receipt of advance and approval of the “SLD”. Warranty The Solar modules are warranted by the solar panel manufacturer for a period of 25 years. The details are as below 1. Panels: Manufacturing Warrantee for the System: 3 yrs after installation and commissioning. Performance Warrantee: a. 90% efficiency upto 12 yrs b. 80% efficiency upto 25 yrs 2. Inverter: 3 yrs or 5 yrs depending on the make 3. Balance of the Systems: Standard 12 months warrantee against manufacturing defects. We shall also ensure supply of Spares for the System for the required.

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Lumpsum Execution Cost: Rs. 208/Watt (Material Cost: Rs. 180/Watt, Installation Service Charges: Rs. 25/Watt) Therefore, the total price will be :10KWp system shall be INR 20,80,000. . The final system size shall be finalized based on site visit and load conditions. • •

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Prices : Price quoted are FOR at site Delhi. Tentative Cost Breakup: a) Rs. 100/ Watt Solar Modules. b) Rs 35/ Watt Three Phase 10 KW Solar Inverter. c) Rs 15/ Watt Module Mounting Structures d) Rs 5/ Watt PVC Cabling Cost e) Rs 13/ Watt Civil Works including grouting etc f) Rs 15/ Watt Electrical Works, including lighting conductor, panel earthing, inverter installation g) Rs 25/ Watt Detailed Engineering & Service Cost. Freight & Insurance : Included in above System Installation: System will be supplied and same will be installed by us. Installation Charges included. Excise Duty/Service Tax: Currently, under present rules, Solar Photo Voltaic system is exempted from Excise Duty. However, rate prevalent at the time of dispatch will be applicable extra, at actual. Service Tax extra at Actual will be charged, Presently Applicable @10.32%. Octroi : Any Octroi/Entry tax, if any, will be payable will be extra Sales tax : CST@ 5% will be charged extra without Form-C OR CST@2% Delivery : Dispatch will be effected in 5-6 weeks from the date of acceptance of your Purchase order.(P.O) . System installation will be completed in 3 week’s time from date of receipt of materials at site, provided site is ready for installation. Payment Terms: - INR 50,000 payable in advance for site visit and detailed load conditions study. - 30% of the remaining amount payable as advance along with Formal PO for a specific Solar System size. - 60% on supply of material (as indicated in BOM) at the site. - Balance 10% on successful commissioning of the project. Validity : This offer is valid for 30 days from the date hereof

Name: Rajat Sethi Designation: Head, Solar Infrastructure Services Date: February 21, 2011

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Version: #1 Contact: D-32, Sector 7, Noida, INDIA. Pin Code: 201301 E: [email protected] W: www.exergy.in M: 00-91-9999676750, 00-91-9654436886.

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