Technology overview
Solar cells are the smallest units of a photovoltaic installation and convert light into current by the photoelectric effect. The individual solar cells are connected together in a module (in series connection).
In order to achieve a higher system voltage, modules are connected in Series, called a string. PV strings of a Solar PV array are electrically connected to array junction box with protection devices.
Grid-connected Inverter is an integrated system consisting of a solar charge controller and inverter which converts the direct current (DC) generated by the PV arrays to Alternating
Current (AC) which is fed to the LT panel.
Solar photovoltaic panels
The Photovoltaic modules used for solar pv power plant will be poly-crystalline in nature with a
Module Mounting Structure
The structure will be designed to allow easy replacement of any module and will be in line with the site requirement. Structure will designed for simple mechanical and electrical installation. It will support SPV module at given orientation, absorb and transfer the mechanical loads to the roof property. There will be no requirement of welding or complex machinery at site. The array structure will have tilt arrangement to adjust the plane of solar array for optimum efficiency
Grid tied inverter
A three phase grid connected PV inverter is used to connect the electric grid. Feeding power into grid involves conversion of the DC voltage from the PV array to grid compatible AC voltage.
Junction Box
Junction boxes will be dust, vermin and waterproof and made of FRP/ ABS plastic with IP65 protection. The terminals will be connected to copper bus bar arrangement of proper sizes. The junction boxes will have suitable cable entry points fitted with cable glands of appropriate sizes for both incoming and outgoing cables. Suitable markings will be provided on the bus bar for easy identification and cable ferrules will be fitted at the cable termination points for identification.
Cables
Solar cables are extremely robust and resist high mechanical load and abrasion. High temperature resistance and excellent waterproofing
characteristic provide a long service life to cables used in large scale projects. Connectors with high current capacity and easy mode of
assembly are to be used for the connections of the power plant cables.
Scope of Work
NEMS will provide a turnkey solution and the above pricing includes the following:
- Project planning and system design
- Statutory approvals from relevant agencies for solar installation
- Procurement of materials required for execution of project
- Installing solar modules
- Installation of inverter required for the project
- Laying of earthing equipment/structure as per the statutory requirements.
- System Testing and commissioning
The following are excluded from this quotation:
- Electricity supply for installation.
- Water connection for installation and maintenance of panels.
- Meter connection by DISCOM.
Payment Terms:
| Stage | % of total payment | Next steps |
|---|---|---|
|
Advance payment (upon order confirmation) |
30% |
Net Metering & Dispatch invoice |
|
Dispatch of material |
65% |
Installation |
|
Completion of installation |
5% |
Commissioning/connection of Meter |
Please let me know in case any clarifications are required on this proposal. I look forward to taking this ahead post your confirmation.
Regards,
NEMS
Business
+91 8878803730
Renewable Energy System
Based on the source of renewable energy, renewable energy systems can be categorized as:
- Systems using direct forms of solar energy (solar thermal and solar photovoltaic systems),
- Systems using indirect forms of solar energy (wind, hydro, bio-energy, and wave energy systems),
- Non-solar based renewable energy systems (geothermal energy systems, tidal energy systems, and hydrogen and fuel cells).
Use of Solar PV System for Outdoor Lighting
Solar PV system for outdoor lighting should be installed such that a minimum of 25% of the total number or 15% of the total connected load of outdoor lighting fixtures (whichever is higher) should be powered by solar energy.
Renewable Energy Generation System Capacity
A renewable energy system shall be installed in the building and its rated capacity shall be equal to or more than 1% of internal lighting and space-conditioning connected loads.
It is recommended that the installed renewable energy system meets the annual energy requirements of equal to or more than 30% of internal lighting connected loads or its equivalent in the building.
Renewable Energy Based Water Heating System Capacity
Residential facilities, hotels and hospitals with a centralized system shall have solar water heating for at least one-fifth of the design capacity.
It is recommended that the capacity of the hot water system is such that the annual energy saved by proposed renewable energy system is more than 70% of annual energy required for water heating to meet the hot water requirements of the occupants in the building.
Exception to above
If the hot water requirement is less than 500 litres per day.
System Efficiency
Solar water heater shall meet the performance/ minimum efficiency level mentioned in IS 13129 .
ater heater shall meet the performance/ minimum efficiency level mentioned in IS 13129
Proposal for 15 KW Grid-Tiled Rooftop Solar PV System
Summary of Proposal
Dear Sir,
Pursuant to our discussion, please find below the broad system specification as per your requirement. Detailed specifications including system layout will follow post order confirmation.
|
Configuration Solar PV System |
15 KW Grid-Tied Rooftop |
|
Project location |
Gwalior M.P. |
|
Project capacity |
15 KW |
|
Connection type |
LT, Three phase |
|
Roof type |
RCC |
|
Total Installation Cost |
9.00 Lac |
| Elevated Structure | Exclusive |
|---|---|
|
Tax @ 5% |
₹45000.00 |
|
Total installation costincl. 5% GST |
9.5 lac |
|
Net Metering Facilitation Charge |
Inclusive |
|
Total Cost |
Rs.9.45 Lac |
|
Freight |
Inclusive |
|
Sanction Load Up-gradation |
Exclusive as per actual |
Bill of Material
| Component | Make | Quantity | Technical Specification |
|---|---|---|---|
| Solar panels | Vikram/Adani | 45 | 325/330/335 Wp,Vmp-36.85, Imp-8.82,Voc-45.35 |
| Inverter | Luminous/Havells | 1 | 15KW |
| Mounting structure | Standard | As Required | Hot Dipped G.I./ Aluminum with SS304 nut bolts |
| MC4 connectors | JMV | As Required | IP65, Compatible 325/330Wp |
| DC cable | Polycab | As Required | ISO 9001/ISO 14001 /OHSAS 1000 VAC, 1800 V DC,1.5 KvDC |
| AC cable | Polycab | As Required | IS 7098 Part - 1 Certified/ISO-9001:2008/ISO14001:2004 |
| DC Distribution Box | JMV (Components: Schindler) | 1 | IP65 |
| AC Distribution Box | JMV (Components: Schindler) | 1 | IP65 |
| Earthing cable | Polycab | As | Copper |
| Solar Generation Meter | Secure | 1 | -- |
| Bi-directional meter | Secure | 1 | -- |
| Lightning arrestor | JWV | 1 | -- |
| Earthing Kit | JWV | As Required | ISO, CE, RoHS UL Certified |
| UPVC Pipe | Kissan | As Required | ISO Certified |
The components mentioned above are best in class and a system of this specification will allow you to maximize your savings and give the best return on investment.
