Solar energy, radiant light and heat from the sun, has been harnessed by humans since time immemorial using a range of ever-evolving technologies. Solar energy technologies include solar heating, solar photovoltaic, solar thermal electricity and solar architecture, which can make considerable contributions in solving some of the most immediate issues the world now faces.
Solar Energy is the energy received from the sun that sustains life on earth. For many decades solar energy has been considered as an economical and potential source of energy because it is freely available. However, it is only now after years of research that technology has made it possible to harness solar energy.
Some of the modern Solar Energy systems consist of magnifying glasses with pipes filled with fluid. These systems consist of frontal glass that focuses the sun's light onto the pipes. The fluid present in the pipes heats up instantly. In addition the pipes are painted black on the outside so as to absorb maximum amount of heat. The pipes have reflective silver surface on the inside that reflects the sunlight back, thus heating the pipes further. This reflective silver surface also helps in protecting everything that is on the inside of the solar panel.
The heat thus produced can be used for heating up water in a tank, thus saving the large amount of gas or electricity required to heat the water.
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NEPC India Ltd ventured with REN Electron,Italy for solar know how and expertise providing state-of-the-art solutions to Indian Solar Market
Ren Electron has vast experience in erection and maintenance of Solar systems in and around Italy.
The Joint aim is to facilitate reaching the target set by the Government of Tamil Nadu to generate 3000 MW of electricity from Solar Energy in the next three years.
Executed Projects
Solar Photo-voltaic Systems
NEPC India Ltd, a pioneer in Wind Energy in India since 1989 has created a revolution by manufacturing and supplying more than 4000 Wind turbines across India, Bangladesh and Kazakhstan.
NEPC is proud to announce that we have forayed into Roof Top Solar Market across India. We have tied up with leading players for Photo voltaic components. We will be able to offer the standard format of grid and non grid systems ranging from 1 KW to 1 MW.
NEPC offers all types of solar systems for Flat Roof, Ground Mount and other special applications. We also provide customized solutions basis you requirements and provide the most economic solutions possible.
The prices of our solar systems will be competitive. NEPC INDIA will meet all International / MNRE / state nodal requirements to be eligible for subsidy. NEPC INDIA offers standard prices across India for the solar photo voltaic systems. Also, the company is in discussion with many leading companies in India for installation of our system.
Photovoltaic energy is produced when sunlight is converted into energy with the use of solar cells or semiconductors. These semi conducting cells are usually made of silicon and do not contain any corrosive materials or moving parts. As long as the solar cells are exposed to light, they will produce photovoltaic energy with minimum maintenance. This energy is also environmentally clean, quiet, and safe.
The term "photovoltaic" has two parts: photo, a Greek word meaning light and voltaic, and a reference to the electrical energy innovator - Alessandro Volta. In 1839, French physicist Edmond Becquerel discovered the photovoltaic effect, the production of a volt by use of a semiconductor. This discovery prompted further experimentation with light sources and semiconductors, which led to the invention of solar cells that produce photovoltaic energy.
Individual solar cells, also called photovoltaic cells, are manufactured in different shapes and sizes. Sometimes just one cell is needed to power a device, but most often many cells are connected to one another to form solar panels or modules. These modules can then be connected to create photovoltaic arrays that can be used to power small buildings or large complexes. The resulting output of photovoltaic energy depends on the size of the array. The size varies basis the amount of available sunlight and the amount of power needed.
Even though the power output of a photovoltaic energy system depends on the overall amount of light exposure, it will still generate energy on cloudy or overcast days. To store this energy for later transmission, a variety of storage systems are available to consumers. Most reliable storage systems use a combination of rechargeable batteries and energy-storing capacitors, some of which can be designed for AC or DC power.
The amount of power available on cloudy days and at night in a photovoltaic energy system depends on the energy output of the photovoltaic modules and the battery arrangement. Adding additional modules and batteries will increase the available power, but will also increase the cost of the system. For best results, a thorough analysis of needs vs. cost must be conducted in order to create a system design that will balance cost and need with convenience of use. Systems that are well-designed offer the opportunity for expansion or reduction as energy needs increase or decrease.
Photovoltaic energy is emerging as a viable solution to energy problems worldwide. Its current uses include power stations, transportation, rural electricity supplies, and solar roadways. While still a long way from becoming the world's major energy source, ongoing research into photovoltaic energy may bring a promise of hope for the future.
The common solar cell that many of us have seen is called a photovoltaic solar cell. These are the type of cells found in solar-powered calculator and on satellites to generate electrical energy. These cells convert light energy directly into electrical energy.
These cells are made up of silicon and are made up of semiconductors. An atom of silicon has 14 electrons arranged in three general electron shells. The first two shells closest to the nucleus are full. The outer shell has four electrons and is only half-full. However, silicon will and can share electrons with its neighbours. In the case of crystalline silicon, there are other silicon atoms that will provide electrons for sharing.
However, pure crystalline silicon is a poor conductor as there are no extra electrons which are free to move about. Because of this a solar cell is constructed with silicon mixed with impurities; this is called doping the silicon. For example, phosphorus atoms could be mixed with the silicon. Phosphorus has five electrons in its outer shell. It still bonds with the silicon atoms but now there is an extra electron.
When energy is added to the crystal, this extra electron can break free of its bond and this leaves a hole. Throughout the lattice, we have a series of extra electrons moving freely of their bonds; these electrons are called free carriers.
When silicon is doped with phosphorus, it is called an N-type crystal as it has extra electrons (N for negative). Part of a common photovoltaic cell is created as an N-type crystal.
However, it is also possible to make P-type (positive) silicon but doping it with a substance having three electrons instead of five. Instead of using phosphorus, boron can be used. Boron has three valence or outer electrons. It, consequently, has more holes available for the free electrons created when the N-type silicon is energized. A hole can be thought of as an absence of an electron or a positive charge. The holes can appear to move just like free electrons. Both electrons and holes can be called charge carriers.
The common photovoltaic cell has a N-type silicon put together with a P-type. When placed atop each other the free electrons in the N-type move into the holes available in the P-type. This occurs immediately when the two types of silicon are first brought together, but only close to the contact surface of each type.
The N-type silicon becomes positively charged at its surface and the P-type silicon becomes negatively charged at its surface due to this migration of electrons. This creates an electric field when both types are in contact. When the two types of silicon are sandwiched, there is a creation of a p-n junction, the name of the interface between both types of silicon. This p-n junction acts as a diode permitting electric current to flow in one direction only. At this junction, there are virtually no mobile charge carriers. However, the electric field pulls electrons and holes in opposing directions. Electrons are forced to flow from the P-type silicon to the N-type.
Sunlight is composed of packets of light energy called photons. When a photon of the correct energy strikes the solar cell, it can knock out lattice electrons from outer valence electron orbital’s (or bands) and energize these electrons into the conduction band. This leaves a hole in the valence band.
Excess heat is often produced and this represents energy unavailable to be converted into electricity. If these electron-hole pairs are created in the correct location in the solar cell (near the p-n junction), the electrons will be attracted to the positive n-type silicon and the holes will be attracted to the negative p-type silicon. Some photons do not carry enough energy to create the electron-hole pair. Only about two-thirds of the photons from the sun cannot be utilized by a silicon solar cell.
From what we can tell, the base (boron-doped, P-type silicon) makes up a thicker part of the solar cell than the emitter (phosphorus-doped, N-type silicon). The emitter is around 1 micron or less in thickness while the total cell thickness can be up to 500 microns. To construct the crystalline silicon cell, the boron-doped, P-type silicon is layered to a conductive back contact. The back contact is aluminium or some alloy. An antireflection coating similar to those used on cameras and other optical equipment is used to limit the reflection of sunlight on the top of the emitter.
The bus bar and fingers represent the top electrode. It is constructed to allow ample sunlight into the emitter and base and still allow a pathway for electrical flow of current.
As photons hit the silicon layers, some of these photons create electron-hole pairs. These freed electrons and whole drift and some recombine and are useless for electricity generation. Some do reach the p-n junction; electrons are attracted to the emitter (N-type, phosphorus-doped) region and holes are attracted to the base. The electrons attracted to the emitter can reach the fingers and from there to the bus. If the circuit is complete (external load or complete pathway), these energized electrons can give up part of its extra energy as electrical power and return to recombine with the extra holes via the rear contact.
Monocrystalline cells are cut from a single crystal of silicon- they are effectively a slice from a crystal.
In appearance, it will have a smooth texture and you will be able to see the thickness of the slice.
These are the most efficient and the most expensive to produce.
Polycrystalline (or Multicrystalline) cells are effectively a slice cut from a block of silicon, consisting of a large number of crystals.
They have a speckled reflective appearance and you will be able to see the thickness of the slice.
These cells are slightly less efficient and slightly less expensive than monocrystalline cells.
Amorphous cells are manufactured by placing a thin film of amorphous (non crystalline) silicon onto a wide choice of surfaces. These are the least efficient and least expensive to produce of the three types. Due to the amorphous nature of the thin layer, it is flexible, and if manufactured on a flexible surface, the whole solar panel can be flexible.
One characteristic of amorphous solar cell is that their power output reduces over time, particularly during the first few months, after which time they are basically stable. The quoted output of an amorphous panel should be that produced after this stabilisation.
A solar panel (also solar module, photovoltaic module or photovoltaic panel) is a packaged, connected assembly of photovoltaic cells. The solar panel can be used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications.
Most PV panels contain a top protective layer, two specially treated layers of silicon with collecting circuitry attached to the top layer, and a polymer backing layer.
The top layer of silicon is treated to make it electrically negative; the back layer is treated it make it electrically positive. When sunlight knocks electrons loose from the silicon, electrons move up from the bottom layer of silicon and crowd the electrons in the top layer. The electrons freed from the top layer are collected by electrical contacts on the surface of the top layer and routed through an external circuit, thus providing power to the electrical system attached to the panels.
Major Applications of solar Modules:
These systems are most suitable for customer in remote areas, who would like to make use of electricity but are unable to do so because of non-availability of utility supply. In this case the systems are designed keeping in mind the power requirements and autonomy (days of battery back-up) required.
Grid power system consists of solar panels, a system controller and inverter. Solar panel will produce DC (Direct Current) electricity, and this electricity will be run though the converter and inverter to produce AC (Alternating Current) electricity. Then this energy is run into AC power panel back to the utility companies power grid. As on-grid solar power system enjoys the advantages of battery-free and low cost, this can make the system operation life longer. It also can remote monitoring during the operating. It has been become the main stream in solar power generation. The system brings benefits of pollution reduction, energy conservation and environment protection, all of which make remarkable social values.
Solar Power Solutions-Advantages
- Rooftop Solar has 80% Accelerated Depreciation in 1st Year
- Save 28% tax on investment
- Save Diesel and running cost of Diesel Generator set
- Free power for roughly 20 years post payback
- Acquire Green Image and meet CSR objective
- The solar system provides a stand-alone power supply for all users,which is independent,reliable and stable.
- Users shall not rely on grid power any more.
- The system operates with little maintenance for long time span.
- Stress-Free life from daily power cuts.
- Environmentally friendly - No Noise, No Smoke, No Pollution.
- Reduced Electricity bills.
How to calculate per day Consumption by Residential
| Type of Load (L) | Power in Watts (W) | No. of Load (N) | Approx Total Running Hours (H) /Day | |
| Tube Light | 25 | |||
| Tube Light | 40 | |||
| Fan | 100 | |||
| CFL | 5 | |||
| CFL | 18 | |||
| Laptop | 200 | |||
| Computer - CRT | 500 | |||
| Computer - TFT | 200 | |||
| DVD Player | 100 | |||
| Television | 400 | |||
| Home Theater | 250 | |||
| Music Station | 150 | |||
| Clothes Iron | 1000 | |||
| Toaster | 1000 | |||
| Fridge* | 300 | |||
| Air Conditioner* (1 Ton) | 1500 | |||
| Micro Oven | 1500 | |||
| Water Pump* - 1/2 Hp | 400 | |||
| Water Pump* - 1 Hp | 750 | |||
| Mixie* ( Upto 700 Watts ) | 700 |
| * Loads can be connected to 5 kW and above models only | |
| Total Units Required /Day |
|
How to calculate per day Consumption by Commercial
| Type of Load (L) | Power in Watts (W) | No. of Load (N) | Approx Total Running Hours (H) /Day | |
| Tube Light | 25 | |||
| Tube Light | 40 | |||
| Fan | 100 | |||
| CFL | 5 | |||
| CFL | 18 | |||
| Laptop | 200 | |||
| Computer - CRT | 500 | |||
| Computer - TFT | 200 | |||
| Television | 400 | |||
| Clothes Iron | 1000 | |||
| Fridge* | 300 | |||
| Air Conditioner* (1 Ton) | 1500 | |||
| Split AC* | 3000 | |||
| Water Pump* - 5 Hp | 3500 | |||
| Water Pump* - 1 Hp | 750 | |||
| Lift* | 4000 | |||
| Halogen light* | 40 | |||
| Flood light* | 1000 |
| * Loads can be connected to 5 kW and above models only | |
| Total Units Required /Day |
|
How to calculate per day Consumption by Industrial
| Type of Load (L) | Power in Watts (W) | No. of Load (N) | Approx Total Running Hours (H) /Day | |
| Tube Light | 25 | |||
| Tube Light | 40 | |||
| Fan | 100 | |||
| CFL | 5 | |||
| CFL | 18 | |||
| Laptop | 200 | |||
| Computer - CRT | 500 | |||
| Computer - TFT | 200 | |||
| Fridge* | 300 | |||
| Air Conditioner* (1 Ton) | 1500 | |||
| Split AC* | 3000 | |||
| Water Pump* - 5 Hp | 3500 | |||
| Lift* | 4000 | |||
| Halogen light* | 40 | |||
| Flood light* | 1000 | |||
| Motor(1HP) | 750 | |||
| Motor(2HP) | 1500 | |||
| Motor(3HP) | 2500 | |||
| Motor(4HP) | 3500 | |||
| Motor(5HP) | 4000 |
| * Loads can be connected to 5 kW and above models only | |
| Total Units Required /Day |
|
Grid-interactive Solution
GRID INTERACTIVE SOLAR POWER PLANT WITH BATTERY BACKUP
NEPC Grid-interactive Solar System as the name suggest is a system which gives the option of having electricity available for 24 X 7 in places with long-hour power cuts by enabling the solar batteries to be charged by solar PV modules and also with the Grid power. The Solar hybrid inverter is designed to give the first preference to Solar, second to batteries and third to Grid.
Hence, during the day time solar power can directly be used for the connected Loads even if grid power is available this system will reduce the EB bills, which is an added benefit for the NEPC Grid interactive Solar System.
During power cuts the Solar hybrid inverter automatically gives the power through the batteries and if, battery reaches low charging point the batteries will be charged through the Grid power to maintain minimum float level and automatically the inverter will charge the battery to 100% during the day time through solar
This System is perfectly suited for places with poor grid connectivity and when utility grid power is not reliable and the power cuts are high. This NEPC Grid interactive solar system gives the consumers the option of getting rid of the daily power cut headaches, while also reduces EB bills and results in savings.
KEY COMPONENTS| UNIT IMAGE | DESCRIPTION | |
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Solar Power Pack 175 / 250 Wp Polycrystaline Solar Panels |
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Solar Grid Inverter | |
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Solar Battery 12 V / 150 AH, Lead-acid battery, Fully sealed, Deep cycle, Free Maintenance, Service Life : 5-6 years, Warranty : 2 Years. |
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Solar UV Core Electrical Wires, Cables, DBs, Gang Box, Etc., | |
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Module Mounting aluminium Structure ( For Flat Roofs) | |
REMARKS :
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| UNIT-IMAGE | DESCRIPTION | QUANTITY |
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Solar Panel Mono- Crystalline or Poly Crystalline, Max Power : 200 Wp, Vmp : 36 v, Imp : 5.56 A, Size : 1666 X 978 X 42 , Tolerance : ± 3 %, Weight : 18.65 Kgs. |
5 Pieces |
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Solar Inverter with MPPT Charge Controller DC 24 input, AC 220 or 110 V 1-Phase output, Output power : 1 KW, True sine-wave, Grid-interactive type MPPT charge controller inbuilt, High inverting efficiency up to 90%, required pretections, Warranty : 1 years. |
1 Set |
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Solar Battery 12 V / 150 AH, Tubular, LMLA, Deep cycle, Free Maintenance, Service Life : 3-4 years, Warranty : 2 Years. |
4 Pieces |
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Module Mounting Aluminium Structure Rust and Corrosion Free,High Resistive,Easy and Quick Installation,Maintenance Free,Occupy Less Space,Light Weight,Slope roof or Flat roof. |
1 set |
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Solar Cables International standard, with specification Suitable for solar system, RVV series |
On Actuals |
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Suitable Daily Consumption :≥ 4500 WH Allowable Max Loads Power : 1 KW REMARKS :
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| UNIT-IMAGE | DESCRIPTION | QUANTITY |
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Solar Panel Mono- Crystalline or Poly Crystalline, Max Power : 200 Wp, Vmp : 36 v, Imp : 5.56 A, Size : 1666 X 978 X 42 , Tolerance : ± 3 %, Weight : 18.65 Kgs. |
10Pieces |
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Solar Inverter with MPPT Charge Controller DC 48 input, AC 220 or 110 V 1-Phase output, Output power : 2 KW, True sine-wave, Grid-interactive type MPPT charge controller inbuilt, High inverting efficiency up to 90%, required pretections, Warranty : 1 years. |
1 Set |
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Solar Battery 12 V / 150 AH, Tubular, LMLA, Deep cycle, Free Maintenance, Service Life : 3-4 years, Warranty : 2 Years. |
8 Pieces |
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Module Mounting Aluminium Structure Rust and Corrosion Free,High Resistive,Easy and Quick Installation,Maintenance Free,Occupy Less Space,Light Weight,Slope roof or Flat roof. |
1 set |
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Solar Cables International standard, with specification Suitable for solar system, RVV series |
On Actuals |
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Suitable Daily Consumption :≥ 9000 WH Allowable Max Loads Power : 2 KW REMARKS :
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| UNIT-IMAGE | DESCRIPTION | QUANTITY |
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Solar Panel Mono- Crystalline or Poly Crystalline, Max Power : 200 Wp, Vmp : 36 v, Imp : 5.56 A, Size : 1666 X 978 X 42 , Tolerance : ± 3 %, Weight : 18.65 Kgs. |
15 Pieces |
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Solar Inverter with MPPT Charge Controller DC96 input, AC 220 or 110 V 1-Phase output, Output power : 3 KW, True sine-wave, Grid-interactive type MPPT charge controller inbuilt, High inverting efficiency up to 90%, required pretections, Warranty : 1 years. |
1 Set |
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Solar Battery 12 V / 100 AH, Tubular, LMLA, Deep cycle, Free Maintenance, Service Life : 3-4 years, Warranty : 2 Years. |
16 Pieces |
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Module Mounting Aluminium Structure Rust and Corrosion Free,High Resistive,Easy and Quick Installation,Maintenance Free,Occupy Less Space,Light Weight,Slope roof or Flat roof. |
1 set |
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Solar Cables International standard, with specification Suitable for solar system, RVV series |
On Actuals |
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Suitable Daily Consumption :≥ 13500 WH Allowable Max Loads Power : 3 KW REMARKS :
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| UNIT-IMAGE | DESCRIPTION | QUANTITY |
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Solar Panel Mono- Crystalline or Poly Crystalline, Max Power : 250 Wp, Vmp : 36 v, Imp : 6.94 A, Size : 1766 X 978 X 42 , Tolerance : ± 3 %, Weight : 20.1 Kgs. |
16 Pieces |
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Solar Inverter with MPPT Charge Controller DC96 input, AC 220 or 110 V 1-Phase output, Output power : 4 KW, True sine-wave, Grid-interactive type MPPT charge controller inbuilt, High inverting efficiency up to 90%, required pretections, Warranty : 1 years. |
1 Set |
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Solar Battery 12 V / 120 AH, Tubular, LMLA, Deep cycle, Free Maintenance, Service Life : 3-4 years, Warranty : 2 Years. |
16 Pieces |
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Module Mounting Aluminium Structure Rust and Corrosion Free,High Resistive,Easy and Quick Installation,Maintenance Free,Occupy Less Space,Light Weight,Slope roof or Flat roof. |
1 set |
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Solar Cables International standard, with specification Suitable for solar system, RVV series |
On Actuals |
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Suitable Daily Consumption :≥ 18000 WH Allowable Max Loads Power : 4 KW REMARKS :
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| UNIT-IMAGE | DESCRIPTION | QUANTITY |
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Solar Panel Mono- Crystalline or Poly Crystalline, Max Power : 250 Wp, Vmp : 36 v, Imp : 6.94 A, Size : 1766 X 978 X 42 , Tolerance : ± 3 %, Weight : 20.1 Kgs. |
20Pieces |
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Solar Inverter with MPPT Charge Controller DC96 input, AC 220 or 110 V 1-Phase output, Output power : 5 KW, True sine-wave, Grid-interactive type MPPT charge controller inbuilt, High inverting efficiency up to 90%, required pretections, Warranty : 1 years. |
1 Set |
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Solar Battery 12 V / 150 AH, Tubular, LMLA, Deep cycle, Free Maintenance, Service Life : 3-4 years, Warranty : 2 Years. |
16 Pieces |
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Module Mounting Aluminium Structure Rust and Corrosion Free,High Resistive,Easy and Quick Installation,Maintenance Free,Occupy Less Space,Light Weight,Slope roof or Flat roof. |
1 set |
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Solar Cables International standard, with specification Suitable for solar system, RVV series |
On Actuals |
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Suitable Daily Consumption :≥ 22000 WH Allowable Max Loads Power : 5 KW REMARKS :
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| UNIT-IMAGE | DESCRIPTION | QUANTITY |
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Solar Panel Mono- Crystalline or Poly Crystalline, Max Power : 250 Wp, Vmp : 36 v, Imp : 6.94 A, Size : 1766 X 978 X 42 , Tolerance : ± 3 %, Weight : 20.1 Kgs. |
40Pieces |
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Solar Inverter with MPPT Charge Controller DC240 input, AC 440 V 3-Phase output, Output power : 10 KW, True sine-wave, Grid-interactive type MPPT charge controller inbuilt, High inverting efficiency up to 90%, required pretections, Warranty : 1 years. |
1 Set |
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Solar Battery 2 V / 240 AH, VRLA, Deep cycle, Free Maintenance, Service Life : 3-4 years, Warranty : 2 Years. |
120 Pieces |
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Module Mounting Aluminium Structure Rust and Corrosion Free,High Resistive,Easy and Quick Installation,Maintenance Free,Occupy Less Space,Light Weight,Slope roof or Flat roof. |
1 set |
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Solar Cables International standard, with specification Suitable for solar system, RVV series |
On Actuals |
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Suitable Daily Consumption :≥ 45000 WH Allowable Max Loads Power : 10 KW REMARKS :
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Solar Photovoltaic Systems
GRID TIED SOLAR POWER PLANT WITHOUT BATTERY BACKUP
The Grid Tied system will include erection of reputed make photovoltaic modules and conversion of DC electricity generated through same to AC through a reputed make power conditioning unit with necessary mounting structure will be provided with other requisite accessories. This type of system only operates when the grid power is available. Since grid power outages are rare, this system will normally provide the greatest amount of bill savings to the customer against investment. However, in event of an outage the system is designed to shut down until utility power is restored. The inverter switches to "sleep mode" and awaits restoration of grid power. Once grid power restores the inverter synchronizes itself to grid and starts feeding power into the grid.
KEY COMPONENTS| UNIT IMAGE | DESCRIPTION | |
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Solar Power Pack 175 / 250 Wp Polycrystaline Solar Panels |
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Solar Grid Inverter | |
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Solar UV Core Electrical Wires, Cables, DBs, Gang Box, Etc., | |
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Module Mounting Aluminium Structure ( For Flat Roofs) | |
REMARKS :
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Grid-Tied Connected Solar Working Principle &Schematic Diagram
POWER YOUR HOME BEFORE YOU FEED INTO THE GRID.
NEPC India is now offering an innovation to help you optimize, consumption of solar generated electricity through "Solar Rooftop system". To manage your electrical appliances our Roof top Solar system can detect the present amount of PV output and by means of a relay device and can ensure that the electrical appliances in your home are powered by solar electricity at the best in time. As usual, any solar electricity which isn't needed during this time (During summer season) will be exported to the national grid (Fig-1). Even if you have to import (During rainy season) additional electricity from the grid after using your personally generated solar electricity,your electricity bill will still be considerably lower than usual (Fig-2).
WORKING PRINCIPLE.
- In order to start the connected appliances, the Inverter (1) sends a control signal to an external load relay (2).
- This in turn switches the individual appliances ON. Before the appliance can operate, a stable threshold power must be available to the inverter.
- This can be set in 250 Watt increments. Afterwards, the relay switch ON time can be set to up to 10 hours in individual one hour blocks.
- In the factory settings the Inverter is set to switch ON when the AC power is constantly above the 250W threshold over a thirty minute period. The operating time relay is one hour.
- A third meter is important in order to calculate your private consumption. This records the amount of privately generated electricity is therefore calculated by comparing the difference between the generation meter (3) and the export meter (4).
- Your electricity budget is therefore at its best when the electricity meter (5) reads "0". To put it another way, the more privately generated solar electricity that you use instead of imported grid electricity, the better.
- With the manual over-ride switch (6) you can over-ride the load relay and connect the appliance to the grid supply at any time.
Solar Photovoltaic Systems
GRID INTERACTIVE SOLAR POWER PLANT WITH BATTERY BACKUP
This type of system operates in grid connected mode when the power grid is available. However, in the event of an outage, the system is designed to operate in stand alone mode and starts powering dedicated loads, until utility power is restored. The inverter switches to "standalone mode" and awaits restoration of grid power. Once grid power restores the inverter synchronizes itself to grid and starts feeding power into the grids.
KEY COMPONENTS| UNIT IMAGE | DESCRIPTION | |
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Solar Power Pack 175 / 250 Wp Polycrystaline Solar Panels |
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Solar Grid Inverter | |
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Solar Bi-Directional Inverter | |
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Solar Battery 12 V / 150 AH, Lead-acid battery, Fully sealed, Deep cycle, Free Maintenance, Service Life : 5-6 years, Warranty : 2 Years. |
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Solar UV Core Electrical Wires, Cables, DBs, Gang Box, Etc., | |
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Module Mounting Aluminium Structure ( For Flat Roofs) | |
REMARKS :
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Product Brouchers - Download
Solar Articles
Chennai Schools Gets NEPC Solar Power
Solar power system must for all colleges by January 2014
Rising electricity tariffs result in fast adoption of rooftop solar power plants
Solar Articles
Tamilnadu Solar Energy Policy 2012
Andhra Pradesh Solar Energy Policy 2012
Kerala Solar Energy Policy 2012
Karnataka Solar Energy Policy 2011
Gujarat Solar Energy Policy 2009
Projects Received
| Solar Orders | |||
| S.no | Solar System | Details | Date |
| 1 | NEPC SOLAR - 3 KWp | NEPC solar receives solar Installation order for 3 KWp Grid-interactive solar system. | May,2013 |
| 2 | NEPC SOLAR - 5 KWp | NEPC solar receives solar Installation order for 5 KWp Grid-interactive solar system. | May,2013 |
| 3 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system. | Apr,2013 |
| 4 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system. | Apr,2013 |
| 5 | NEPC SOLAR - 15 KWp | NEPC solar receives solar Installation order for 15 KWp Grid-interactive solar system. | Apr,2013 |
| 6 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system. | Apr,2013 |
| 7 | NEPC SOLAR - 4 KWp | NEPC solar receives solar Installation order for 4 KWp Grid-interactive solar system. | Apr,2013 |
| 8 | NEPC SOLAR - 20 KWp | NEPC solar receives solar Installation order for 20 KWp Grid-tied solar system. | Apr,2013 |
| 9 | NEPC SOLAR - 1.5 KWp | NEPC solar receives solar Installation order for 1.5 KWp Grid-interactive solar system.Kerala | Mar,2013 |
| 10 | NEPC SOLAR - 3.5 KWp | NEPC solar receives solar Installation order from School in Chennai for 3.5 KWp Grid-interactive solar system | Feb,2013 |
| 11 | NEPC SOLAR - 8 KWp | NEPC solar receives solar Installation order from School in Chennai for 8 KWp Grid-interactive solar system | Feb,2013 |
| 12 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system | Feb,2013 |
| 13 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system | Feb,2013 |
| 14 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system | Jan,2013 |
| 15 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system | Dec,2012 |
| 16 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system | Dec,2012 |
| 17 | NEPC SOLAR - 10 KWp | NEPC solar receives solar Installation order for 10 KWp Grid-interactive solar system | Dec,2012 |
| 18 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system | Dec,2012 |
| 19 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system | Dec,2012 |
| 20 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system | Nov,2012 |
| 21 | NEPC SOLAR - 25 KWp | NEPC solar receives solar Installation order for 25 KWp Grid-tied solar system | Nov,2012 |
| 22 | NEPC SOLAR - 1 KWp | NEPC solar receives solar Installation order for 1 KWp Grid-interactive solar system | Nov,2012 |
| 23 | NEPC SOLAR - 10 KWp | NEPC solar receives solar Installation order for 10 KWp Grid-interactive solar system | Nov,2012 |
| 24 | NEPC SOLAR -1.5 KWp | NEPC solar receives solar Installation order for 1.5 KWp Grid-interactive solar system | Oct,2012 |
| Aluminium Module Mounting Structure Orders | |||
| S.no | Aluminium Module Mounting System | Details | Date |
| 1 | NEPC SOLAR - 1 KWp | NEPC solar receives order for 1 KWp Aluminium Module Mounting Structure from Navsar Green Energy Systems | May,2013 |
| 2 | NEPC SOLAR - 4 KWp | NEPC solar receives order for 4 KWp Aluminium Module Mounting Structure from IGlobe Systems Pvt Ltd | Apr,2013 |
| 3 | NEPC SOLAR -3 No's of 1 KWp | NEPC solar receives order for 3 numbers of 1 KWp Aluminium Module Mounting Structure from Solarsis | Apr,2013 |
| 4 | NEPC SOLAR - 1 KWp | NEPC solar receives order for 1 KWp Aluminium Module Mounting Structure from Shimato Enterprises Pvt Ltd | Apr,2013 |
| 5 | NEPC SOLAR - 3 KWp | NEPC solar receives repeated order for 3 KWp Aluminium Module Mounting Structure from Solarsis | Apr,2013 |
| 6 | NEPC SOLAR - 2 KWp | NEPC solar receives repeated order for 2 KWp Aluminium Module Mounting Structure from Soltech Equipments | Apr,2013 |
| 7 | NEPC SOLAR - 10 KWp | NEPC solar receives repeated order for 10 KWp Aluminium Module Mounting Structure from Chemtrols Solar Pvt Ltd | Apr,2013 |
| 8 | NEPC SOLAR - 6 KWp | NEPC solar receives repeated order for 6 KWp Aluminium Module Mounting Structure from Soltech Equipments | Apr,2013 |
| 9 | NEPC SOLAR - 40 KWp | NEPC solar receives repeated order for 40 KWp Aluminium Module Mounting Structure from Solarsis | Apr,2013 |
| 10 | NEPC SOLAR - 5 KWp | NEPC solar receives repeated order for 5 KWp Aluminium Module Mounting Structure from Solarsis | Apr,2013 |
| 11 | NEPC SOLAR - 10 KWp | NEPC solar receives repeated order for 10 KWp Aluminium Module Mounting Structure from V.D. Swami & Company (p) Ltd | Apr,2013 |
| 12 | NEPC SOLAR - 100 KWp | NEPC solar receives order for 100 KWp Aluminium Module Mounting Structure from V.D. Swami & Company (p) Ltd | Apr,2013 |
| 13 | NEPC SOLAR - 50 KWp | NEPC solar receives order for 50 KWp Aluminium Module Mounting Structure from SPM Energy Pvt Ltd. | Apr,2013 |
| 14 | NEPC SOLAR - 15 KWp | NEPC solar receives repeated order for 15 KWp Aluminium Module Mounting Structure from Solarsis | Apr,2013 |
| 15 | NEPC SOLAR - 5 KWp | NEPC solar receives order for 5 KWp Aluminium Module Mounting Structure from Novus Green Energy Systems Pvt Ltd | March,2013 |
| 16 | NEPC SOLAR - 55 KWp | NEPC solar receives order for 55 KWp Aluminium Module Mounting Structure from U-Solar Clean Energy Solutions Pvt Ltd | March,2013 |
| 17 | NEPC SOLAR - 10 KWp | NEPC solar receives order for 10 KWp Aluminium Module Mounting Structure from Chemtrols Solar Pvt Ltd | March,2013 |
| 18 | NEPC SOLAR - 4.5 KWp | NEPC solar receives repeated order for 4.5 KWp Aluminium Module Mounting Structure from R.K.Solar Power System (P) Ltd | March,2013 |
| 19 | NEPC SOLAR - 5 KWp | NEPC solar receives repeated order for 5 KWp Aluminium Module Mounting Structure from JJPV solar | Feb,2013 |
| 20 | NEPC SOLAR - 25 KWp | NEPC solar receives repeated order for 25 KWp Aluminium Module Mounting Structure from Solarsis | Feb,2013 |
| 21 | NEPC SOLAR - 2.5 KWp | NEPC solar receives repeated order for 2.5 KWp Aluminium Module Mounting Structure from R.K.Solar Power System (P) Ltd | Feb,2013 |
| 22 | NEPC SOLAR - 2 KWp | NEPC solar receives order for 2 KWp Aluminium Module Mounting Structure from V.D. Swami & Company (p) Ltd | Feb,2013 |
| 23 | NEPC SOLAR - 2 KWp | NEPC solar receives order for 2 KWp Aluminium Module Mounting Structure from R.K.Solar Power System (P) Ltd | Feb,2013 |
| 24 | NEPC SOLAR - 1 KWp | NEPC solar receives order for 1 KWp Aluminium Module Mounting Structure from Elidi Renewable Energy | Jan,2013 |
| 25 | NEPC SOLAR - 100 KWp | NEPC solar receives order for 100 KWp Aluminium Module Mounting Structure from Windcare India Private Limited | Jan,2013 |
| 26 | NEPC SOLAR - 5 KWp | NEPC solar receives repeated order for 5 KWp Aluminium Module Mounting Structure from Soltech Equipments | Jan,2012 |
| 27 | NEPC SOLAR - 15 KWp | NEPC solar receives repeated order for 15 KWp Aluminium Module Mounting Structure from JJPV solar | Jan,2013 |
| 28 | NEPC SOLAR - 2 KWp | NEPC solar receives order for 2 KWp Aluminium Module Mounting Structure from Solariz Greenpower Pvt.Ltd | Jan,2013 |
| 29 | NEPC SOLAR - 1 KWp | NEPC solar receives order for 1 KWp Aluminium Module Mounting Structure from Soltech Equipments | Dec,2012 |
| 30 | NEPC SOLAR - 5 KWp | NEPC solar receives order for 5 KWp Aluminium Module Mounting Structure from Star Energy Systems | Dec,2012 |
| 31 | NEPC SOLAR - 2 KWp | NEPC solar receives order for 2 KWp Aluminium Module Mounting Structure from Gaurav Electronics | Dec,2012 |
| 32 | NEPC SOLAR - 1 KWp | NEPC solar receives order for 1 KWp Aluminium Module Mounting Structure from Solarsis | Dec,2012 |
| 33 | NEPC SOLAR - 70 KWp | NEPC Solar receives 70 KW order from JJPV solar as launch customer for NEPC'S aluminium flat roof aluminium structure | Dec,2012 |
Solar Rooftop Orders
-
1) NEPC SOLAR - 1 KWp
NEPC solar receives solar Installation order for 1 KWp solar system.Dec,2012 -
2) NEPC SOLAR - 1 KWp
NEPC solar receives solar Installation order for 1 KWp solar system.Dec,2012 -
3) NEPC SOLAR - 1 KWp
NEPC solar receives solar Installation order for 1 KWp solar system.Nov,2012 -
4) NEPC SOLAR - 25 KWp
NEPC solar receives solar Installation order for 25 KWp solar system.Nov,2012 -
5) NEPC SOLAR - 1 KWp
NEPC solar receives solar Installation order for 1 KWp solar system.Nov,2012 -
6) NEPC SOLAR - 1 KWp
NEPC solar receives solar Installation order for 1 KWp solar system.Nov,2012 -
7) NEPC SOLAR -1.5 KWp
NEPC solar receives solar Installation order for 1.5 KWp solar system.
Oct,2012 -
8) NEPC SOLAR - 10 KWp
NEPC solar receives solar Installation order for 10 KWp solar system.
Nov,2012
Solar Rooftop Orders
Frequently Asked Questions
Module Mounting Structure Price Calculation
| Select KW | No.of Sets (Ex:1KW*2) | Select Panel Watts | Length | width | Thick |
- 100% advance against Purchase Order.
- Transportation Extra at Actual
- All Price are Ex Works at Chennai
- Vat @ 5% Extra
