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by Solar experts

solar energy plant installation

The global formula to estimate the electricity generated in output of a photovoltaic system used in solar power plant for generating solar energy for home/industrial/commercial roof top or ground mounted is :
E = A * r * H * PR
Where E = Energy (kWh) ,A = Total solar panel Area (m²) ,r = solar panel yield (%) ,H = Annual average solar radiation on tilted panels (shadings not included) ,PR = Performance ratio, coefficient for losses (range between 0.5 and 0.9, default value = 0.75) , r is the yield of the solar panel given by the ratio : electrical power (in kWp) of one solar panel divided by the area of one panel

Example : the solar panel yield of a PV module of 250 Wp with an area of 1.6 m² is 15.6%
Be aware that this nominal ratio is given for standard test conditions (STC) : radiation=1000 W/m², cell temperature=25 °C, Wind speed=1 m/s, AM=1.5. The unit of the nominal power of the photovoltaic panel in these conditions is called "Watt-peak" (Wp or kWp=1000 Wp or MWp=1000000 Wp).
H =solar radiation data
You have to find the global annual irradiation incident on your PV panels with your

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solar energy plant installation

After the solar panels used in solar power plant for generating solar energy for home/industrial/commercial roof top or ground mounted, are installed , the dirt starts to built up over the panels and can substantially affect system performance. It is required to be cleaned up from time to time regularly to avoid losses of solar energy. But while cleaning can enhance the system performance but wrong cleaning processes of materials used can lead to bad performance of the system. Therefore one needs to be careful in selecting the right materials , tools and processes for cleaning the solar power system. While the right materials , tools and processes are necessary , it is equally important to have trained manpower to do the job.

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solar energy plant installation

MAJOR COMPONENTS:
The major systems, sub systems & components going in a solar power system are:
1. Solar Panels 250W / 300W used in solar power plant for generating solar energy for home/industrial/commercial roof top or ground mounted
2. Module Mounting Structure (customized to requirements)
3. Single/three Phase Solar string Inverter
4. Junction Boxes & ACDB
5. Cables & Accessories
6. Lighting Arresters & Earthing

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solar energy plant installation

DC and AC cables are an important part of Solar PV rooftop system, used in solar power plant for generating solar energy for home/industrial/commercial roof top or ground mounted. The 25 years life of Solar PV rooftop system can be expected only when the cables used in solar power plant for generating solar energy for home/industrial/commercial roof top or ground mounted are of appropriate size and quality. In this blog we will be talking on DC and AC cables size and quality.

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solar energy plant installation

A Solar PV Rooftop system will give its optimum performance only when the string sizing has been done correctly. In this blog, we will be talking on correct methods of string sizing.

Now let us first understand what a String is. When we connect Solar PV panels, used in solar power plant for generating solar energy for home/industrial/commercial roof top or ground mounted, in series, then it is called a String. String sizing means, what should be the minimum and maximum number of Solar PV panels to be connected in a string, so that system operates at its highest efficiency.

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solar energy plant installation

Solar Panels : A lot of duplicate panels , used in solar power plant for generating solar energy for home/industrial/commercial roof top or ground mounted ,are available in the market and cheaper solutions use the same. In absence of customer knowledge on the subject they are taken for a ride . To avoid malpractice , customers should insist on seeing the panel sl no via a RFID reader , which we are sure the vendor should have . And if some vendor says that he does not have a RFID reader then please avoid getting systems installed by such vendors.

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solar energy plant installation

Designing layout for a solar installation is an expert job and needs to be done with utmost care. There are two important considerations while designing solar panels installation used in solar power plant for generating solar energy for home/industrial/commercial roof top or ground mounted, one is inclination of the panels and another is direction. The angle of tilt should be latitude of the place wherever the installation is being done to optimize the radiation of solar and direction should be true south.

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solar energy plant installation

Recently our team was involved in a project "Design, Installation and Commissioning of 50 kWp Solar PV Rooftop Power Plant". Out of the total capacity of 50 kWp, 40 kWp was installed on an industrial site at Faridabad and 10 kWp was installed at residential site at Sainik Farm at New Delhi.

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solar energy plant installation

The Sri Aurobindo International Centre of Education (SAICE) of the Aurobindo Ashram in Puducherry is perhaps the first educational institution to become self-reliant by meeting all its energy requirements through solar energy. Grid-tied solar power plants have been installed on the rooftop of the Centre of Education building, Salle d'Art, Library and the Dining Hall with a cumulative capacity of around 130 kW. These rooftop power plants produce over 16,000 units of electricity per month. The four buildings themselves consume less than half of the electricity generated and the excess electricity is exported to compensate for the electricity consumed by other Ashram buildings thereby avoiding transmission and distribution losses. The Ashram did not avail any Government capital subsidy and instead opted for the Group Net Metering facility, a unique feature of the Solar Energy Regulations of December 2014 by the Joint Electricity Regulatory Commission (JERC) for Goa and Union Territories. These Regulations provide for the surplus solar energy produced by a consumer to be adjusted in the electricity bill of another service connection of the consumer within the State or Union Territory. This provision facilitates optimal usage of rooftops that are suitable for solar energy in cities where land

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solar energy plant installation

When we are talking about 25 years of life for a Solar PV Rooftop Power Plant, Module Mounting Structure plays a crucial role. In this bog we will be discussing on Module Mounting Structures Quality and Design.

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solar energy plant installation

Net metering is a critical dimension on the early and effective implementation of which depends the success of the grid-connected solar rooftop programme. SERCs of 19 States/UTs have notified regulations for net metering/feed-in-tariff mechanism, namely, Andhra Pradesh, Chhattisgarh, Delhi, Haryana, Karnataka, Kerala, Tamil Nadu, Uttarakhand and West Bengal, Andaman & Nicobar, Chandigarh, Dadra & Nagar Haveli, Daman & Diu, Lakshadweep, Pondicherry, Goa, UP, Rajasthan and Odisha. However, its implementation has so far been tardy which is impeding project development and deployment. The following issues require urgent attention and action on the part of the discoms to expedite installations:

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solar energy plant installation

"Yes, I have installed an optimised Solar PV Rooftop System that will generate maximum electricity for me". Are you sure before saying that? Do you have confidence on your installer and his installation?

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solar energy plant installation

Islanding occurs when a solar rooftop system continues to supply to a load even when the grid is down; this can be very dangerous. Therefore, when the grid is down, the inverter, used in the rooftop system solar power plant for generating solar energy for home/industrial/commercial roof top, stops supplying power. This is a technical requirement for inverters strictly mandated by CEA and MNRE. However, in view of frequent grid outages in most States, particularly in industry, commercial and institutional establishments, the rooftop system should be able to disconnect from the grid and continue to supply solar power to the loads of such establishments using a battery storage system or in synergy with the backup diesel generator, else the solar power will be wasted. This is possible through additional advanced features to be provided in inverters – the hybrid inverter which could work in the off-grid mode and continue to charge batteries which power certain loads, or the inverter can continue to function in grid-tied mode in synergy with the larger backup diesel generator. For most industrial, commercial and institutional establishments, the second option is more feasible as they have large existing backup diesel generators for their loads. Such backup

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solar energy plant installation

In the competitive market of Solar PV Rooftop industry, installers may quote aggressively in order to get the order but this reduction in prices may not be from the margins rather from substandard system components. Customer concentrates mostly on quality of panel and inverters. While it cannot be denied that quality panels and inverters should give higher  generation of power but for better and trouble free life & working of the solar power generation we cannot ignore quality of Earthing and other Protection components. These components of the total system mean a lot for the well being of solar power generation. Any compromise or low quality standards, for Earthing/SPD/ACDB/AJB etc can be fatal not only for the power system but also for human life.

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solar energy plant installation

Getting a solar system , for generating solar energy for home/industrial/commercial roof top or ground mounted, is only a small part of the effort, the key is in maintaining the performance of the solar system month on month basis. According to estimates, regular maintenance can increase the performance by 30% of the solar system installed over your roof or on the ground.

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solar energy plant installation

Site Assessment & Shadow Analysis - An important step before Rooftop Solar PV Installation.

According to MNRE, approximate 10 sq. meters "Shadow Free" area is required for 1 kWp Rooftop Solar PV Installation. The term "Shadow Free" is very important and in this blog we will be discussing about "Site Assessment and Shadow Analysis for Rooftop Solar PV Installation".

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solar energy plant installation

With the advancement in technology, the sizes of the solar panels are reducing to provide the same potential of electricity. Right now the panels available in delhi / NCR can provide up to 340 Watts of power from a single panel. It means three would be a requirement of at least 3 panels if one wishes to generate 1 KW of solar power.
The panel sizes generally available in the markets will include panels from 250 watts onwards. Commonly available will include panel sizes of 315 watts, 330 watts and so on.
The panel size of a 315 watt panel will be around 2.0 meter X 1.0 meter based on the specifications provided by key suppliers. Typical specs of a panel are as follows -

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solar energy plant installation

There are a number of suppliers to buy solar PV panels used in solar power plant for generating solar energy for home/industrial/commercial roof top or ground mounted. These solar PV panel suppliers are divided into various tiers out of which Tier 1 suppliers are considered best. The division of solar PV panel suppliers into tiers is done mostly based on the financial strength of these companies while few technical parameters are also considered in this review.

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solar energy plant installation

Normally structures are made of MS and then galvanized with 80 microns of Zinc coating. The height of solar panels after mounting on such structures from roof surface remains 300 mm to 750 mm only. Sufficient only to allow cleaning roof below the panels from time to time. But it is possible to increase the height of structures to 2-3 mts also , giving enough room below the panels to create a workable space or do roof gardening below the panels, while the panels produce solar energy for your home/ industry. In some cases industries have used that space for

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solar energy plant installation

An Array Junction Box, AJB, is used to connect the photovoltaic strings in parallel. The combined DC power is fed to the photovoltaic inverter. It includes photovoltaic string protection, overvoltage protection and a DC output switch isolator. The AJB can be customized for different configurations, based on the number of strings of solar panel modules used in the layout. AJB have the following component

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solar energy plant installation

Solar photovoltaic (PV)cells / modules generate electricity from sunlight, which can be fed into the mains electricity supply of a home/industry/building or sold to the public distribution company connected to the grid. This will Reduce the need for generation through fossil fuel technology. More and more solar energy systems on roof top will help create jobs, enabling home/industry/building to save money, and cut greenhouse emissions/ pollution.

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solar energy plant installation

A string monitors system is the advanced version of AJB. AJB with string monitor unit is called SMB (string monitoring box). A string monitor system has the main objective to monitor the individual string current & common bus voltage on real time basis. It also has the temperature measurement facility for the keeping a check on the temperature inside the box. The string current, voltage & temperature are measured & communicated through a RS-485/Zigbee over Modbus protocol. It should be compatible with SCADA system. It helps in easy detection & identification of fault in any string. After getting the location

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solar energy plant installation

Poor performance of solar projects has become a cause of worry recently. As a benchmark the large field based projects were expected to generate around 1500 kWh of electricity for each KW of solar panels installed in the Northern India. However the performance of these projects has not been satisfactory. The table below shows the actual number of units generated per kW of solar panels as recently announced by the Agencies for different Northern India states for the year 2012-13.

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solar energy plant installation

With the ever growing temperatures and the persistent humidity, ACs have become a necessity today; as have the room heaters with the chilling temperatures of winters.
And while these make living easier, they do increase the cost of living. The ever increasing electricity rates don't help the bills either.
There sure are the green methods to lower the electricity bills, for e.g., LED light sources, the energy efficient appliances, and the latest, solar power; and then there are also some easy tricks and minor adjustments in the way we use our appliances which can help cut down the energy costs. These don't require an immediate big change or investment, and yet help cut down on the costs.

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solar energy plant installation

Crystalline silicon photo voltaic (PV) technology has given consistent performances in Indian conditions over the years. Limited experience with thin film technology has provided good performance in Rajasthan but slightly lower in other Indian Northern States compared to crystalline technology.

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solar energy plant installation

Sizing a battery for off grid solutions is quite complex from overall system design point of view. If we oversize then we carry the risk of battery not being fully charged and if undersized then we run the risk of not servicing the intended load for the planned duration.

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solar energy plant installation

The results of an analysis have been reported of generation for 2014 from solar power projects installed under the two Batches of Phase I of the National Solar Mission. The average net exported power under Batch 1 projects in the Northern States of Haryana, Punjab, UP and Uttarakhand ranged from 101-127 kWh/kW and was higher at 152 kWh/kW for Rajasthan. In most States generation was higher for crystalline technology compared to thin film technology. Under Batch 2, projects have come up only in Rajasthan in the Northern Region and the generation is slightly higher for thin film projects at 158

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solar energy plant installation

Solar roof top is expected to get a big push with the new scheme launched by IREDA to provide access to easier and cheaper credit. This scheme is expected to get funding from the current sources of IREDA, new lines from international funding agencies like KFW and the tax free bonds to be raised soon by the Government. As such the corpus available to support this scheme would be significant and has the ability of taking the rooftop solar to a much larger level through attractive credit.

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solar energy plant installation

Financing has been identified as the key barrier towards accelerating solar rooftop deployment. Towards easing the burden of high cost funds, the Government on 8th July, 2015 launched a Scheme of Indian Renewable Energy Development Agency (IREDA) for providing loans @ 9.90 – 10.75% for solar rooftop projects with a repayment period of 9 years and moratorium of 1 year. Loans can be provided upto 70 - 75 % of project cost and can be availed under Aggregator category or Direct category for a minimum aggregated capacity of 1 MW with minimum sub-project size of 20 KW. Interest rates are linked to credit rating of borrowers. The Scheme is backed by credit lines from KfW and JICA. The Financial & Operational Guidelines of the Scheme which is open to Industrial, Commercial & Institutional projects have been released by IREDA.
IREDA has pioneered and has so far been lending to large multi-megawatt utility scale renewable energy projects for which it has considerable experience. Lending to distributed or decentralized projects is a relatively new domain. The project/loan size will generally be smaller and gestation will be shorter. New documentation and processing/appraisal procedures will be necessary. The conditionalities and security requirements including collateral/bank

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solar energy plant installation

In off grid systems the main issue experienced is regarding the battery back up recommended by supplier . This issue as well the life of the battery guaranteed by the supplier makes a lot of difference in costing of the solar power off grid systems.

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solar energy plant installation

A definite interest is there with many building owners for the roof top solar projects as the prices have come down for the solar panels. The performance of the solar panels have been quite satisfactory across India under various weather conditions to give the confidence to the building owners that the solar technology is there to stay for long times to come.

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solar energy plant installation

Over 50,000 Petrol Pump stations in the country require electricity to run their Petrol Pumps and are paying heavy tariff charges to DISCOMs. Many of the petrol pump owners are also using diesel generators in areas where there are power cuts.

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solar energy plant installation

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solar energy plant installation

As per the approved tariff order of UPERC dated 18th June 2015, the tariffs for the consumers in the state of Uttar Pradesh are increased for all the consumer categories. The increased electricity tariffs varies from Rs 0.40 per unit to Rs 1.0 per unit depending on your consumer category (with the exception of Private Advertising and Sign Post) and the number of units consumed. A Unit is equivalent to one kWh (kilo watt hour).

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solar energy plant installation

According to provisions of the Electricity Act 2003, the State Electricity Regulatory Commissions (SERCs) are required to fix a minimum percentage of the total consumption of electricity in the area of a distribution licensee for purchase of energy from non-conventional energy sources. The concept of Renewable Purchase Obligation (RPO) was thus born in the country. Consequently, the SERCs in various States have come up with 3-5 year trajectories for RPOs. The SERCs were later also asked to reserve within the percentage so made applicable, to start with, a minimum percentage of 0.25% for purchase of solar energy under a Solar Purchase Obligation (SPO), going upto 3% by 2022. Under the Draft Amendment to the Tariff Policy, now under consideration, the SPO is sought to be raised so that it reaches at least 8% in energy terms by March, 2019. This is being done with a view to accelerate solar deployment in order to reach the goal of 100,000 MW by 2022, which includes a target of 40,000 MW for solar rooftop projects. The applicability of RPO and SPO extends beyond discoms to Captive Generators and Open Access (OA) Obligated Entities (OEs) as well.

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In a far reaching decision, the subsidy for setting up roof top solar will be completely removed for the Commercial and Industrial consumers going forward pending the Cabinet's decision. The decision also clearly points towards the maturity of solar technology and its increasing affordability on its own for the widespread implementation.

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solar energy plant installation

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solar energy plant installation

The Delhi Jal Board shows the way in Delhi . . .

The Delhi Jal Board has installed a solar power plant on the rooftops of their underground reservoirs. The 50 KW plant comprises 200X250 watt solar panels and 2X25 KW grid-tie inverters. It is projected to generate 90,000 units of electricity per year, likely to give a saving of Rs. 7.2 lakhs in a year. Actual generation of 6,600 units and saving of Rs. 55,000 have been reported for a month. The solar insolation levels for Delhi at 5 kWh/sq. m./day are lower than Rajasthan or Gujarat which can give annual yields of around 1500 kWh/kW.

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solar energy plant installation

Colleges are exploring the option of installing solar solutions for some time given the discussions going around about the attractiveness of solar technology these days. As the colleges as well schools generally have a peak load during the day time, the solar technology becomes feasible for them to consider. The case of solar is further supported by huge roof space available with these institutions which can be effectively used for installing solar. In fact, the colleges may have potential to generate surplus power which can be sold to the Distribution Companies at commercial rates.

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solar energy plant installation

With rapid growth in solar PV sector in India, market is getting cluttered with thousands of solar panel companies. While most of these companies are small ventures selling imported solar panels at very competitive prices, there are few large companies such as Tata Power Solar, Su-Kam and Moser Baer offering quality products. With so many products and companies in the market, it's extremely difficult for a consumer to choose the right panel. A solar panel buying decision should be based on analysis of factors such as which solar panel technology to be used, selection of an ideal panel manufacturer, certifications of the panel, its operating specifications, effect of variance in its performance and efficiency of the panel.

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solar energy plant installation

With Indian government's target of 100 GW by Solar power, 40 GW is targeted through Solar PV Rooftop Power Projects. As we all know Solar PV panels produce DC power, while the appliances that we use at our home require AC supply. Hence there is a need of a product that will convert DC into AC, so that Solar PV power can be used by us. This is done by using Inverters.

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solar energy plant installation

The Union Cabinet on 17th June, 2015 approved the revised target of 100,000 MW for solar power for 2022. This includes the target of 40,000 MW for solar rooftop projects. The Government also proposes to provide subsidy for rooftop projects. There was a provision for 30% capital subsidy for these projects under the Grid Connected Rooftop & Small Solar Plants Programme of the Ministry of New & Renewable Energy (MNRE), which has recently been reduced to 15% of the total cost or Rs. 12.00 per watt, or Rs. 1.20 crore per MW. It is not clear whether this has come into effect as yet. In any case, there is a huge backlog in clearing pending subsidy payments under the erstwhile scheme.

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solar energy plant installation

The rooftop solar markets are expanding rapidly in India. On the back of government incentives and reducing solar prices, the number of installations is expected to go up significantly in the coming years in the light of the national goal of 40,000 MW by 2022. A number of solar vendors are marketing solar panels to the roof owners with the promise that solar panels will last for more than 25 years. Yes, the life of panels is quite long, of course, but there is a certain performance degradation observed in the generation from solar panels.

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solar energy plant installation

Roof top solar solutions are becoming increasingly popular with the building and house owners. A few thousands of solar installations have already happened in the country. As the prices of solar have significantly reduced while the Distribution Company (discom) or the grid tariffs are further increasing, the solar solutions have become attractive source of electricity.

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solar energy plant installation

In National Capital Region, the net metering has been allowed by all three state governments of Delhi, Haryana and Uttar Pradesh. It means that if a building owner has installed the roof top solar solution, then the units (kWh) generated from this solar solution will be netted off from the total monthly electricity bill of the building. It is an important step in promoting roof top solar as the generation from solar is available during certain hours in a day when the building may not require this electricity. As such the building owners can "bank" this power with the Distribution grid and take it back when they require it through net metering mechanism.

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solar energy plant installation

Uttar Pradesh Discoms have filed the petition on 2nd February 2015 for the tariff increase for the year 2015-16 which is now being heard by UPERC. The Discoms have proposed a hike in the tariff by 9.21% though the tariff required to meet the full revenue gap is 19.59%. The biggest percentage increase in tariff has been proposed for the domestic consumers which can go up to 19% for the consumers in the lowest consumption slab.

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The savings from installing rooftop solar will accrue to the consumers by reducing their electricity bill. For the units generated from the solar solution, the consumer does not have to pay the bill to the distribution company (Discom). However the consumer does not get the waiver from paying all the charges.

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solar energy plant installation

To make a Solar PV Module, solar cells are joined physically and electrically.

Components of Solar PV Module:

  • Glass
  • Encapsulant
  • Module frame
  • Interconnectors

Steps for fabrication of Solar PV Modules:

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Solar cells can be classified as:

  • Mono crystalline solar cell
  • Poly crystalline solar cell
  • Thin film solar cell

Mono Crystalline solar cells are produced by wafers of highly pure single Si crystal. Metallurgical grade silicon is purified to form semiconductor grade silicon. Mono crystalline solar cells have highest efficiency of around 20%. Due to the high efficiency, mono crystalline cell require less space to generate more power. The cost of Mono crystalline cells is very high compared to other technologies. Mono crystalline cells are highly vulnerable to temperature effects. This technology is well developed and gives a stable power output. Mono crystalline cells have less power degradation over time when compared to other technologies.

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solar energy plant installation

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??????? ?? ?? ??? ?? ??????? ???? ?????? (???????? ????????), ???? ??? ???? ?????????? ?? ?????? ?? ??????????? ?? ?
?????? ???????? ????, ????? ???? , ?????? ????? ?? ???? ????? ?????? ?????????? ?? ????? ???? ???? ?? ???? ???? ??????? ??????? ?? ?? ????? ???????? ??????????? ????? ?? ???? ???, ???? ??? ???? ?? ?? ????? ????????? ?? ?????? ???? ????? ?? ???? ???????? ?? ?? ????? ???? ?? ????????? ?? ? ???? ?? ????? ????????? ?? ??? ??????? ??? ????? ??? ???? ??? ???? ?????? ??

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solar energy plant installation

As per the tariff order of DERC for the year 2014-15, the variable tariffs for the commercial and industrial categories for the year 2014-15 are in excess of Rs 9.00 per kWh. A revenue deficit surcharge is imposed on the fixed and variable charges as per the orders of DERC and the Supreme Court ruling.

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solar energy plant installation

Haryana Electricity Regulatory Commission has finalized the tariff for the year 2015-16 as per its order dated 7th May 2015.

Tariff for the domestic consumers consuming more than 500 units are going to see a substantial hike in the tariff. The energy charges for these domestic consumers are increased from Rs 5.98 per kWh to Rs 6.74 per kWh - a 12.9% year to year increase. The FSA, Electricity Duty and the Municipal tax would be over and above this tariff. In effect, these domestic consumers will pay Rs 8.17 per kWh as the variable tariff.

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Given the challenges in getting supply from conventional sources, the Haryana Electricity Regulatory Commission has recommended the Discoms to support roof top solar systems. In the tariff order for 2015-16, the HERC has suggested that "Discoms shall endeavour to promote the installation of grid connected Solar Rooftop System and to facilitate its consumers who intend to install such system. The Commission, in order to promote Rooftop Solar Power System under net-metering regulations, shall consider Generation Based Incentive (GBI). The details of the incentives to be provided shall be determined by a separate Order in due course of time".

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As per the recent order (March 2015) by HERC, the FSA recoverable from the State Government on account of sale of power to agricultural pumpset consumers is as under.

FY Amount to be recovered from Government for Agriculture subsidy (Rs CR)
2008-09 344.27
2009-10 961.49
2010-11 415.48
2011-12 753.13
2012-13 615.27
2013-14 725.93
Total 3815.57

 

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Discoms in almost all the states provide the Net Metering facility by which the consumers can store the excess energy generated from the roof top solar plant with the Discom Grid and can use it in later hours.

During the Sun hours, when the load (in KW) of the factory or the commercial building is less than the roof top solar generation for any 15-minute block interval, the excess solar energy goes back to the Grid. During evening hours when the load is more and there is hardly any solar generation, then the stored solar energy is used back by the consumer from the Grid.

The accounting of the roof top solar energy is done on a monthly basis. Read more

solar energy plant installation

Solar installmodular in nature and the factories, cold storages, warehouses, commercial buildings, Malls etc can plan to install solar panels (KW) as per their requirements.


To understand the solar plant sizing, let us assume a hypothetical case where in an industry located in Kundali, Sonipat (Haryana), and
  • has a roof made of metal shed and has an area of 3000sqmeters,
  • has a contract load of 1,500 KW,
  • has an average monthly electricity consumption of 70,000 units or kWh
  • is connected to a distribution transformer of 2,000KVA.

Following factors should be taken into consideration while designing the solar system for your roof -
  1. Roof Size determines the maximum capacity of the solar plant that can be installed:
    1. Each panel has an area size of roughly 2 sq meter (1 meter X 2 meter) with a capacity of around 325 watts. So broadly, 3 panels can make 1 KW of solar installation which implies 1 KW can be installed in 6 sq meter of roof areain ideal conditions.
    2. However, space is required to be left between the panel rows to avoid shadow on the panels. As the panel structures are raised to provide inclination and thus the better exposure to sunlight, Read more
solar energy plant installation

Apart from the solar panels, there are a number of components that make the solar system to be installed at factories and industries.

Solar Inverters are the most important component after the solar panels which need to be properly selected and installed for rooftop solar systems. Most industries in Delhi and NCR (Faridabad, Kundali, Panipat, Sonipat, Ghaziabad, Manesar, Noida, Neemrana etc) have opted for strong brand names for the inverters that would include ABB, Huawei, SMA, Delta, Waaree etc. The Inverters are available with a warranty of 5 years though the extended warranty of another 5 years can be available by paying a bit extra. Quality of Inverters matter significantly in generating higher power from the same level of solar generation provided by the Solar panels. More number of MPPTs (Maximum Power Point Tracker) generally help to increase the reliability of the solar system and provide better generation.

The structure for mounting the Solar Panels is an important part of the system. The strength of the structure should be such that they can bear a wind speed of 180 kms per hour. Typically, the structure should be designed and tested on the design software like STAAD.PRO to check their suitability for Read more

solar energy plant installation

In past, the solar systems used to be connected with the batteries that used to store the power before it was supplied to the machines and. Appliances. These solar systems were called as the off grid solar systems and were typically used as the backup for limited purposes.

However, with the technology break through and manifold increase in the reliability of electricity supply from the Discoms, the new age solar systems directly connect to the Discoms panel and Energy Meters via certain protections and relays. No batteries are required for these On Grid Solar systems as the much-required stability to match up the intermittent nature of solar power, is provided by the Discom power. Hence, the Discom acts as the large size battery for the On Grid Solar plants.

So, the solar works only when the power is available from Discom or from the DG sets.

These On-Grid systems generate power during sunny hours which are on average 1400 hours in an year in Delhi and NCR (Gurgaon, Faridabad, Ghaziabad, Noida etc) with few hours plus or minus. So out of 8760 hours in a year, the solar is available for around 16% of time assuming the full capacity of the Read more

solar energy plant installation

Many industries in Delhi/NCR (Kundali, Sonipat, Faridabad, Bahudargarh, Manesar, Bawal, Ghaziabad, Greater Noida etc) have to still depend on the Diesel Generator sets for running factories for few hours daily. What happens if the discom supply is disrupted during the sunny hours when the sun is still out generating the power?

Grid tied solar plants or On-grid solar systems will run when the Discom power is available as the solar inverters have in built feature which commands the solar system to generate power when it can sense that the supply is available from other sources. Such a feature is built in solar inverters as the solar power is an intermittent source of electricity supply which provides variable output depending on the solar intensity at that moment. Hence if suddenly the clouds cover the sun, the solar generation will dip making the system unstable.

Therefore, solar has to always run in conjunction with any other dependable and stable source of supply like Discom power, DG power or the batteries.

As the batteries are quite expensive and need to be replaced periodically, most factories depend on the DGs for the back up power. Solar can be connected to the DG panel directly as it Read more

solar energy plant installation

The industries should opt for rooftop solar today as there are a number of commercial advantages apart from environmental benefits. Industries can opt for solar system size ranging from few KWs to few MWs.

Typically, an on grid solar system is preferable which directly connects to the LT panel of the Discom Meter.

  • Power generated from solar will directly reduce the electricity bill.
  • Any surplus power generated at any time will be fed back to the Grid and stored with the Discom.
  • These solar plants run through Net Metering facility provided by the Discom in which the billing and settlement happens at the end of each month. Any surplus power generated from solar plant will be carried forward to the next month. However, if there is any solar plant left unused at the end of the financial year, it will typically lapse.
  • Having said that there are very slim chances that the solar power will lapse as the power generated from solar plant will not be more than 30% of the electricity bill for any industry.

As the solar system directly connects to the LT panel, the solar power gets used to run all the heavy machineries, air Read more
solar energy plant installation

Factories in Delhi and NCR regions have a variety of roofs ranging from flat concrete roofs, metal sheds which are mostly inclined and even the asbestos sheets laid over the top.

The Solar Plant can be installed on any roof that has sufficient strength.

On flat concrete roofs, it is quite easy to lay the solar panels. The civil foundations need to be laid in a way that the water should not seep into the roof. Over the foundations, the structure made up of hot dipped galvanized steel needs to be built of sufficient strength. The structure should preferably give a tilt of 20 degree around in Delhi and NCR to get the best solar irradiation. The panels should face to the South side to the extent possible.

The Metal sheds can be facing east-west or north-south. If the metal structure has sufficient strength, the solar panels can be easily laid. The solar panel structure should be such that it is light and strong enough to hold panels. In typical sheds, the purlins and associated structures are designed to take weights of more than 100 kg per square meter. Solar plant will weight around 20-25 kgs per square meter, hence the Read more