10 kwp-solar-rooftop-system


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10kWp solar PV rooftop by Exergy

10 kwp-solar-rooftop-system

  1. 1. 10 KWp SOLAR PV ROOFTOP SYSTEM PROPOSALRef: PEPL/10-11/PV/682M/s Ace Controltech Services Ltd Date: 21- February ‘11Dear 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 & Commercialoverview, for your kind perusal. A. System DefinitionSize 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 similarsystems. Exergy makes no guarantees as to actual production output from this system.Grid/Load InterfacingSolar system output shall be connected to a suitable load bus capable of taking the input. This input point shall be selected in fieldin consultation with client’s Executive Engineer. Solar Photovoltaic Proposal Page 1
  2. 2. B. System ComponentsSolar Panels Make: Solar Semiconductor/ Photon Energy/ Tata BP SolarNote: Subject to availability at installation time, a different panel Model: SSI-M6-200from a leading vendor may be selected without affecting system size Quantity: 50and performance. 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 VdcInverter SMA Sunny Tripower 10000TL/ Delta Inverters Quantity: 1Note: Subject to availability at installation time, a different inverter AC maximum output: 10 KWmay be selected without affecting system size and performance. 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 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, Solar Photovoltaic Proposal Page 2
  3. 3. 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, GreenBattery NoneEnergy 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. Solar Photovoltaic Proposal Page 3
  4. 4. C. Bill of MaterialS.No Component Type/Model No Specifications Quantity1 PV Modules SSI-M6 200/ Solar 50 Semiconductor2 Grid Tie Inverter SMA, Sunny Tripower 1 10000TL; Solivia 10 TL Central/ String Inverters3 Mounting Structure Custom made MS hot dip galvanized 1Set steel4 Field Junction Box ABB Junction Boxes IP65 standards As per stringing design5 Main Junction Box ABB Junction Boxes IP65 standards As per stringing design6 Earthing Kit Reputed make 1 set7 Lightening Arrestors Reputed make 1 set8 AC & DC cables Conforming to BOS As per site requirements9 Ground Fault Protection System Included in the inverter 110 Remote Monitoring System Sunny Web Box NA D. Solar PV Plot Plan Solar Photovoltaic Proposal Page 4
  5. 5. E. Installation DetailsArea 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 thatmodule can be replaced easily and in line with site requirements and it is easy to install and service in future. The frames will besupported by angle legs of suitable lengths to provide the pre-determined inclination. All fasteners, nut and bolts are made ofStainless 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 1:2:4cement concrete. Actual frame and other structural dimensions will be determined during a more detailed site visit by specialistsduring full design phase.Inverter InstallationBased on the initial site visit, the inverters could possibly be installed on the terrace. This space provides ample accessibility andgood air circulation. The inverter is available in IP54 housing, however, an enclosed space has to be provided for the same. Actualinstallation location and methods will be determined during full design phase.ElectricalProposed fire hose shaft will be used for running electrical cables down to the electrical panel room. A detailed electrical designwith single-line diagram and specifications will be prepared during full design phase after receiving the PO, for the client’s approval. Solar Photovoltaic Proposal Page 5
  6. 6. 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 ScopeSite-specific considerations will require assistance and cooperation from the client, as outlined below: 1. Provide access to work site for delivery of equipment and materials prior to and during project implementation. 2. Provide a suitable and secure space for storage of equipment and materials. 3. Facilitate access of work crew to the work site 7 days a week. 4. Facilitate interfacing with the client’s resident engineering staff for consultation as needed. 5. Separate electrical loads as discussed in Part A (Grid Interfacing) and connect solar output to building load system. 6. All the Statutory clearances, if any, required for the Project. H. Delivery Schedule & Project CostInstallation & CommissioningAll the Systems except Inverter, will be installed within 8-10weeks from the date of receipt of advance and approval of the “SLD”.WarrantyThe 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. Solar Photovoltaic Proposal Page 6
  7. 7. 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. • 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 hereofName: Rajat SethiDesignation: Head, Solar Infrastructure ServicesDate: February 21, 2011 _______________Version: #1Contact: D-32, Sector 7, Noida, INDIA. Pin Code: 201301 E: rajat@exergy.in W: www.exergy.in M: 00-91-9999676750, 00-91-9654436886. Solar Photovoltaic Proposal Page 7