1. SOLAR PV ROOFTOP SYSTEM PROPOSAL:
Solar Proposal 10 KWp
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. 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:
Note: Energy production projections are reasonably accurate
estimates based on site’s solar data and our experience with
similar systems. Energy 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.
2. Solar Proposal Page 2:
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.
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 Repowers 10000TL/
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
3. 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,
4. Solar Proposal Page 4:
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.
5. Solar Proposal Page 5:
Bill of Material S.No Component Type/Model No Specifications
Quantity 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
Included in the inverter 1 10 Remote Monitoring System Sunny
Web Box NA D.
6. Solar PV Plot Plan Solar Proposal Page 6:
Installation Details Area required:
The Total Area required for the System Installation shall be apex 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.
7. 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.
8. Solar Photovoltaic Proposal Page 8:
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.
9. Client Scope Site-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 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”.
10. Warranty
Solar modules are warranted by the solar panel manufacturer for a
period of 25 years.
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 Proposal Page 10
Material Cost: Installation Service Charges
Therefore, the total price will be 10KWp system
The final system size shall be finalized based on site visit and load
conditions. 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%.
11. • 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 5 week’s time from date of receipt of
materials at site, provided site is ready for installation.
• Payment Terms: 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: SUMIT NAHA
Designation: Head, Solar Infrastructure Services
Date: Dec, 2020
ADD: MALIYA,STATION ROAD,GROUND FLOOR, ROOM NO. 2, HOOGHLY,WB
