Solar plant is a source of Green Energy. By installing solar plant you can get accelerated depreciation benefits of 80% in the first year and 20 % in the second year. The solar plant cost is recovered in 3 to 5 years, after that for more than 20 years it will generate electricity at almost zero cost. Many firms have their green targets and a policy decision to work with green accredited firms. The green accreditation that a solar power plant earns will help to win these valuable contracts from environmental conscious Indian and overseas firms. On a personal level , you can be proud of being a responsible citizen and caring parent to your future generations.

The area required for installing 1 KW solar power plant will be 150- 200 square feet shadow free facing south. We will do a site visit to survey and advise about the plant capacity.

A solar power plant earns its owner many financial, commercial and humanitarian benefits as listed

  • The owner is offered a 30% front ended capital subsidy on the project cost
  • Solar installations are liable for 80% depreciation benefit, which enables the owner to get back 33% of his actual investment (subsidized cost) in a span of 3 years
  • You earn back 53% of your investment without considering even a single unit of power produced by the system
  • Green power produced by the Solar power plant earns back the remaining 47% in less than 3 to 5 years
  • Many reputed firms have their green targets and a policy decision work with green accredited firms. The green accreditation that a solar power plant earns you will help win these valuable contracts from environment conscious Indian and overseas firms
  • A Solar power plant installation aids in recognitions such as ISO14001 and LEEDs or GRIHA boosting a firm’s revenue earning potential
  • On a personal level, you can be proud of being a responsible citizen and caring parent to your future generations

On an average Rs. 75,000/- to Rs. 90,000/- is required to install 1 KW capacity on grid roof top solar power plant. The amount varies with site location.

Hospitals, Hotels, Retail Malls, Commercial Buildings, Society, office building etc. can install solar power plant.


Time taken for design, installation and commissioning of a Solar power plant varies with the size and place of installation. We generally commit and deliver within 4 to 6 weeks. An exact time estimation varies on the complexity of the roof and would be clearly stated in our techno-commercial quote to the client.

A Solar power plant will have following components

  • Solar panel array – These are the crystalline silicon cell induced panels that generate DC power when sunlight falls on it
  • Solar power condition unit – This is the heart of a solar power plant. It converts the DC produced by the panels for AC supply. Moreover, it does various other functions of harmonics correction, power factor improvement and power flow management
  • Battery bank – A solar plant generates electricity during day-time but load components need to be powered during night time as well. A solar panel array is designed to produce enough power for both the times. The power thus produced during the day-time but not consumed during this period gets stored in the battery bank to power the load during the No-sunlight time.


A Solar PV or Photo-voltaic power plant works on the principle of Photoelectric effect as discovered by Albert Einstein (for which he got his Nobel Prize in 1922). The Solar PV panel used in such a plant converts the energy stored in the photons in the Sunlight to electricity. This electricity generated in DC form is conditioned for home, commercial or industrial use accordingly.
Solar water heating system on the other hand simply uses the heat component of the Sunlight in an efficient and clever manner. The heat energy thus trapped is used to heat water to some degrees or even to steam for further use in various different forms.

A solar power plant can be of 3 different types.

  • Grid Tie system – This system gets integrated with the State grid supply and transmits back any power that the plant has produced and the load doesn’t consume. The system would trip when there is no Grid supply. Evidently, this system won’t have a battery bank and is not a viable option in regions with regular power cuts
  • Off-grid system – This is system has a battery bank and stores energy for later usage. Also the system continues to function, even when there is no grid supply. This type of system is more suitable for Indian power conditions considering the frequent power outages but operates at lower efficiency as compared to a Grid-tie system with the inclusion of batteries as part of the system
  • Hybrid system – This is a combination of both. The entire power requirement during the daytime gets routed directly to the load as in a grid-tie system. Night time load requirement gets routed through the batteries as in an Off-grid system. Power cuts won’t put off the system and the power management system is capable of putting extra electricity generated if the client wish to do so (only if the state has a net metering regime in place). Needless to say, a hybrid power plant require clever designing and careful planning during installation.


Every one kWp of Solar power plant capacity generate 4 to 7 kWhs (commercial electricity units). Subsequent addition of kWp capacity will generate more units of electricity proportionally.
The exact amount of electricity will depend on the Solar radiation received at your location. We will be providing you this information in our DPR (Detailed Project Report) that will handed over to you along with our techno-commercial quotation to you.


We give 5 years system warranty and from sixth year onwards we can have AMC at nominal rates. The system will generate power for more than 25 years.


Power generation capacity can be increased by installing a Sun-tracking Solar panel array. The Sun-tracking arrangement ensures that the Solar panel array stay perpendicularly incident to the sunlight at all times. The trouble however is the cost. At current Indian market rates, additional power generated by using a sun-tracking arrangement cannot offset the additional cost incurred for having this system installed as part of your Solar power plant.


LED fixtures and lighting solutions not only make your Solar power plant more cost effective but also more green. LED lights consume much less power (measured in kWh) for the same amount of light output (lumens). The Chart below will give you a precise measure of this fact.

Light output in Lumens Power consumed in Watts
Incandescent Lamp CFL LED
450 40 10 – 14 6 – 9
800 60 15 -18 8 – 12
1100 75 20 – 25 12 – 15
1600 100 25 – 30 16 – 20
2600 150 35 – 45 25 – 28

What’s important to note here is that LEDs offer you much more light output in lumens for every watt of electricity that it consumes when compared to a conventional incandescent light. In comparison to CFLs , even though a significant energy saving can only made of higher lumen ratings, LEDs still score over CFLs in a big time when it comes to the life of these fixtures. We advise being prudent with the quality of LED lights that you buy for realizing this longer life span.


No. Every place has a different pattern of Solar radiation. We as a part of our techno-commercial quote provide our client with a DPR (Detailed Project Report), which details the amount of electricity that the plant will generate daily on a month by month basis. We use MNRE (Ministry of New and Renewable) radiation data of Solar Photo-voltaic to generate these figures.
Please Note: There are various types and sources for Solar radiation available. Each of these has a purpose and it needs an expert to decide the right kind of information to be used. We share this relevant information once again as part of our DPR (Detailed Project Report)


Every 1 kWp Solar array would require 7 to 9 m2 of unshaded area for installation depending on the location and incident radiation.


A good solar panel array will be in service for 25 years from the date of power plant commission.


All that needs to be done as part of a maintenance routine for Solar panel array is simple cleaning. The required frequency for this cleaning is once in two weeks to twice a week depending on how dusty the place or weather is. Compare that with the expensive servicing & oil change routine required for Diesel generators and you know why the running cost of a Solar is almost close to zero.


This power plant is synchronized with existing grid. Due to intelligent inverter whatever power generated by solar will be consumed first. Balance power will be drawn from the grid and to that extent you will have to pay your power bill. During power failure there will not be any  power from grid. Since system is synchronized with grid there will not be power from solar also. During rainy season very little or no solar power will be generated, hence power requirement will be met by GRID POWER.


A Solar panel array is made safe from any lighting related risks by having appropriate lighting conductors as part of the Solar power plant components provided by us. The toughened glass on top of every Solar panel is capable of withstanding rain, snow and even hail to the size of 1 inch hitting the panel at a speed of 120 miles per hour.


Net metering is a unique concept much prevalent in the developed world. It lets the solar power plant owner sell back the power to the state grid at a rate which may not be the same or may be even higher than the rate at which he/she buys it from the grid and thus facilitating an additional revenue stream for the solar power plant owner.
Currently, this concept has being introduced in six places in India on a trial basis, namely – Gandhinagar (Gujarat), Pondicherry, tried out on a pilot basis. Obsolete components and instability of the power grids in India restricts fast adoption of this concept in the country.


One should be beware of firms or individuals quoting a fixed per kWp costing for a solar power plant. A good cost effective system needs to be customized according to the user’s load and usage pattern and this customisation drives the cost of the system upwards or downwards.

We advise our clients to contact us for a free site assessment followed by a site survey to arrive at the right system configuration and the best cost thus derived.

  • ON GRID ( GRID TIE)- For day time consumption
  • OFF GRID ( With storage Battery for night consumption)
  • Hybrid System – With partial storage.We recommend only GRID TIE System as same is cheapest and negligible power loss.

We recommend only GRID TIE System as same is cheapest and negligible power loss.

In Maharashtra very recently NET Metering policy has been passed by MMERC. Hence consumer will have to install NET Metering meter in place of regular meter. This meter will have export & import of power recording system. Thus you will have to pay for the actual units consumed by you. Say for one month your establishment is closed. Than power generated by soalr energy will be fed to GRID. Your electricity company will give you credit of power units fed by you to the GRID.

We are currently offering our Solar Lease solution to Hospitals, Retail Malls and Hotels in the Metro cities of Mumbai. When you choose to avail a Solar Lease offering from Longman Suntech Energy, we start by carrying out an energy audit of your premises along with an assessment of the Roof area that you possess. Based on our assessments, we offer the best possible Solar Power solution to you. This will include a Solar Power plant installed and commissioned in your premises, wherein you pay not a single Rupee for this Power plant.

Yours as well as Our Commercial Power meters will record the power consumed from the Solar Power plant. You pay for this power consumed as recorded on a monthly or Bi-monthly basis. We will maintain the system at our expense and you enjoy clean, green Solar Powered Electricity at a cheaper price to what you currently pay for it !!!

In principle yes, in practice it is not economically(or in the case of keeping the AC on backup power —environmentally) feasible. Initial investment is more. In a line-tie system then the solar power you generate will offset some of the power needed to run the AC.

Currently the installed cost is of the order of Rs.130 to Rs.170/-per Watt before incentives.

With ESR Solar PV system you are buying power at a known fixed cost . Payback can only be calculated by guessing figures such as energy inflation rates, etc. Again, using energy efficiently is the only way to win in the long-term.

Yes. If you generate more power than you use, the power can be sold back to the utility. The rate that they pay depends on the utility company, and the local state laws and requirements.

Ask home owners who have PV, they are normally more than happy to explain their system and how to get one.
Call your Utility company.
Find a local Rensync PV dealer in the yellow pages.

FAQ’S FOR GRID CONNECTED SOLAR ROOFTOP SYSTEMS
1. What is a Grid Connected Solar Rooftop System ?
2. How much roof area is required to set up the grid connected rooftop solar system ?
3. What is the Financial Assistance provided by the Ministry ?
4. Net metering ?
5. Feed-in-Tariff ?
6. What is PAY-BACK Period ?
7. What is a Load Restriction ?
8. How Solar is operated in Night ?

What is a Solar Rooftop System?
In a solar rooftop system, the solar panels are installed in the roof of any residential, commercial, institutional and industrial buildings. This can be of two types
(i) Solar Rooftop System with storage facility using battery, and
(ii) Grid Connected Solar Rooftop System.

What is a Solar Rooftop System with Storage facility?
Such rooftop system has battery as storage facility. The solar electricity is stored in the battery and can be utilized during night also when the sun is not available.

What is a Grid Connected Solar Rooftop System?
In grid connected rooftop or small SPV system, the DC power generated from SPV panel is converted to AC power using power conditioning unit and is fed to the grid either of 33 KV/11 KV three phase lines or of 440/220 Volt three/single phase line depending on the capacity of the system installed at institution/commercial establishment or residential complex and the regulatory framework specified for respective States.

These systems generate power during the day time which is utilized fully by powering captive loads and feed excess power to the grid as long as grid is available. In case, where solar power is not sufficient due to cloud cover etc., the captive loads are served by drawing power from the grid.

Where such plants can be installed?
Such rooftop systems can be installed at the roofs of residential and commercial complex, housing societies, community centers, government organizations, private institutions, etc.

No LOAD RESTRICTION
Solar Energy is fed to grid either of 33KV / 11KV three phase lines or of 440/220 volts three / single phase line on the capacity of the system installed at institution or commercial establishment or residential complex.

How is Solar operated at night?
During Daytime Solar energy is stored in battery-bank, which in turn is used at night.

What is the average cost of grid connected rooftop solar systems?
The average cost of grid connected rooftop solar systems is about Rs. 80 per watt or Rs. 8.0 crore per MWP capacity.

What is the Financial Assistance provided by the Ministry?
There is a provision of Central Financial Assistance of 15% of the total cost or Rs. 12 per watt or Rs. 1.20 crore per MWP under the Grid Connected Rooftop and Small Solar Plants Program of the Ministry. This CFA has been reduced from 30% to 15%

What are the other fiscal incentives are available for Solar Rooftop Systems?
There are provisions of concessional import duty/excise duty exemption, accelerated depreciation and tax holiday for setting up of grid connected rooftop power plants.

What efforts Government is making to providing loans for solar rooftop systems?
Department of Financial services has instructed to all Public Sector Banks to encourage home loan/ home improvement loan seekers to install rooftop solar PV plants and include cost of system in their home loan proposals. So far, nine PSBs namely Bank of India, Syndicate Bank, State Bank of India, Dena Bank , Central Bank of India, Punjab National Bank, Allahabad Bank, Indian Bank and Indian Overseas Bank have given instructions to extend loan for Grid Interactive Rooftop Solar PV Plants as home loan/ home improvement loan.

What is the size of grid connected rooftop solar system?
The rooftop solar systems from 1 kWp upto 500 kWp or in combination can be set up on the roofs.

How much roof area is required to set up the grid connected rooftop solar system?
About 10sq.m area is required to set up 1 kWp grid connected rooftop solar system.

What are the advantages of Grid-Connected Rooftop Solar System?
– Electricity generation at the consumption center and hence Savings in transmission and distribution losses
– Low gestation time
– No requirement of additional land
– Improvement of tail-end grid voltages and reduction in system congestion with higher self-consumption of solar electricity
– Local employment generation

What is the potential available in India?
According to a study conducted by TERI, a potential of 124 GWP SPV Rooftop plants has been estimated in the country. This can be achieved through active supports from the States.

Net metering
The grid connected rooftop system can work on net metering basis wherein the beneficiary pays to the utility on net meter reading basis only. Alternatively two meters can also be installed to major the export and import of power separately. The mechanism based on gross metering at mutually agreed tariff can also be adopted.

Feed-in-Tariff
In feed-in-tariff the Government offers a tariff for purchase of the solar power generated from such plants.

What is PAY-BACK Period?
PAY-BACK Period is 4-5 years.

Among net metering and feed-in-tariff what is preferred?
Net metering mechanism is more popular among States.

In case of grid failure, is there any chance for shocks to the person who is repairing?
In case the grid fails, the solar power has to be fully utilized or stopped immediately feeding to the grid so as to safe-guard any grid person/technician from getting shock (electrocuted) while working on the grid for maintenance etc. This feature is termed as ‘Islanding Protection’.

What are requirements from State to promote grid-connected rooftop solar systems?
(i) States should have conducive solar policy to allow the grid connectivity.
(ii) State Regulators have issued tariff order for appropriate tariff, net-metering/feed-in tariff and the grid connectivity, and
(iii)The Distribution Companies agree to allow grid connectivity and purchase the electricity on feed-in-tariff or through net metering arrangement.

How many States have policies to promote grid-connected rooftop solar systems?
So far, 13 States/UTs namely Andhra Pradesh, Chhattisgarh, Delhi, Gujarat, Haryana, Karnataka, Kerala, Punjab, Rajasthan, Tamil Nadu, Uttarakhand, Uttar Pradesh and West Bengal have notified policies that include promotion of grid connected rooftop solar systems with net metering. Regulation from the State Electricity Regulatory Commission is also required to allow net metering/ feed-in-tariff.

How many States Regulators have notified orders to promote grid-connected rooftop solar systems?
20 State/UT Regulators from Andhra Pradesh, Chhattisgarh, Delhi, Gujarat, Haryana, Karnataka, Kerala, Odisha, Punjab, Rajasthan, Tamil Nadu, Uttar Pradesh, Uttarakhand and West Bengal, Andaman & Nicobar, Chandigarh, Dadra & Nagar Haveli, Daman & Diu, Lakshadweep, Pondicherry and Goa have so far issued these regulations for net metering/gross metering.

What is the present status about sanctions under the grid connected rooftop solar programme?
The Ministry has so far sanctioned 361 MWP aggregate capacity of grid connected rooftop solar systems in the country of which 42 MWP have been commissioned.

What are the grid connectivity levels for such systems?
The Projects under these guidelines fall within two broad categories i.e.(a) the projects connected to HT voltage at distribution network (i.e. below 33 KV) (b) the projects connected to LT voltage i.e. 400/415/440 volts (3-phase) as the case may be or 230 volts (1-phase). Accordingly, the projects may be under the following two categories.
Category 1: Projects connected at HT level (below 33KV) of distribution network
The Projects with proposed installed capacity of minimum 50 kW and up to 500 kW and connected at below 33KV shall fall with in this category. The projects will have to follow appropriate technical connectivity standards in this regard.
Category 2: Projects connected at LT level (400 Volts-3 phase or 230 Volts-1 phase)
The Projects with proposed installed capacity of less than 100kW and connected of the grid at LT level (400/ 415/ 440 volts for 3-phase or 230V for 1-phase) shall fall within this category.

What are the business models that can facilitate the promotion of grid connected rooftop solar systems?
There can be many possible business models, some of which can be considered are as follows:
(a) Solar installations owned by consumer
i) Solar Rooftop facility owned, operated and maintained by the consumer(s).
ii) Solar Rooftop facility owned by consumer but operated and maintained by the 3rd party.
(b) Solar installations owned, operated and maintained by 3rd Party
If the 3rd party implements the solar facility and provides services to the consumers, combinations could be:
i) Arrangement as a captive generating plant for the roof owners
The 3rd party implements the facility at the roof or within the premise of the consumers; the consumer may or may not invest as equity in the facility as mutually agreed between them. The power is then sold to the roof owner.
ii) Solar Lease Model, Sale to Grid
The 3rd party implementing the solar facility shall enter into a lease agreement with the consumer for medium to long term basis on rent. The facility is entirely owned by the 3rd party and consumer is not required to make any investment in facility. The power generated is fed into the grid and the roof top owner gets a rent.
(c) Solar Installations Owned by the Utility
i) Solar installations owned operated and maintained by the DISCOM The DISCOM may own, operate and maintain the solar facility and also may opt to sub contract the operation and maintenance activity. The DISCOM may recover the cost in the form of suitable tariff. The electricity generation may also be utilized by DISCOM for fulfilling the solar renewable purchase obligation.
ii) Distribution licensee provides appropriate viability gap funds The DISCOM may appoint a 3rd party to implement the solar facilities on its behalf and provide appropriate funds or viability gap funds for implementing such facility.

Which organizations are setting up the projects for end users?
The program is being implemented through multiple agencies for rapid up-scaling in an inclusive mode. These agencies are:
(i) State Nodal Agencies(SNAs)
(ii) Solar Energy Corporation of India (SECI)
(iii) Channel Partners:
a) Renewable Energy Service Providing Companies (RESCOs)
b) System Integrators
c) Manufactures of any component of the Solar Plants
d) Project developers
e) Vendors / suppliers of solar equipment
f) Reputed and relevant NGOs of National level

(iv) Financial Institutions/Financial Integrators
The Financial Institutions like NABARD, National Housing Banks, Other Banks, IREDA, SECI etc.

(v) Other Govt. Departments/Agencies
The other Govt. Departments/Agencies i.e., Railways, Defense/Para Military Forces, Local Government Bodies including Municipal Corporations/Municipalities, PSUs, Institutions, Development Authorities, DMRC, State Departments interested in directly implementing the programme.

What are the targets under Jawaharlal Nehru National Solar Mission (JNNSM)?
The targets under JNNSM are as under:
solar power

What are the achievements against the targets fixed for Phase-I of JNNSM in solar energy?
The achievements against the targets fixed for Phase-I are as under:
solar power

What is the State-wise total commissioned capacity of Grid Solar Power Projects in the country so far?
The targets under JNNSM are as under:
solar power

What are the achievements of JNNSM till date?
The achievements of JNNSM till date are:
solar power

Scheme for Development of Solar Parks and Ultra Mega Solar Power Projects.
The scheme for development of Solar Parks and Ultra Mega Solar Power Projects has been rolled out by Ministry of New & Renewable Energy 12-12-2014. The Scheme has been conceived on the lines of the “Charanka Solar Park” in Gujarat which is a first-of-its-kind large scale Solar Park in India with contiguous developed land and transmission connectivity.

This scheme envisages supporting the States in setting up solar parks at various locations in the country with a view to create required infrastructure for setting up of Solar Power Projects. The solar parks will provide suitable developed land with all clearances, transmission system, water access, road connectivity, communication network, etc. This scheme will facilitate and speed up installation of grid connected solar power projects for electricity generation on a large scale. All the States and Union Territories are eligible for Benefiting under the scheme.

Salient Features :
i. It is proposed to set up at least 25 Solar Parks and Ultra Mega Solar Power Projects targeting over 20,000 MW of solar power installed capacity within a span of 5 years starting from 2014-15.

ii. The capacity of the Solar Parks shall be 500 MW and above. However, smaller parks may be considered in Himalayan Region & other hilly States where contiguous land may be difficult to acquire in view of difficult terrain and in States where there is acute shortage of non-agricultural land.

iii. The solar parks will be developed in collaboration with the State Governments and their agencies. The choice of implementing agency for developing and maintaining the park is left to the State Government.

iv. The implementing agency will be sanctioned a grant of upto Rs.25 Lakh/Park for preparing Detailed Project Report (DPR) of the Solar Park.

v. Thereafter, application may be made by the implementing agency to Solar Energy Corporation of India (SECI) for the grant of up to Rs. 20 lakhs/MW or 30% of the project cost including Grid-connectivity cost, whichever is lower. The approved grant will be released by SECI as per milestones prescribed in the scheme.

vi. Subsequently, in-principle approval was accorded to 16 Solar Parks of aggregate capacity of 12120 MW planned to be set up in 10 States (A.P, Gujarat, Rajasthan, M.P, Telangana, Punjab, U.P, Tamil Nadu, Meghalaya and Karnataka). Grant of Rs. 141.50 Cr. has been released to Solar Energy Corporation of India (SECI) by 31st December, 2014.

vii. M/s AP Solar Power Corporation Pvt. Ltd. a JV amongst SECI, AP Genco and NREDCAP, is setting up a Solar Power Park of capacity 1500 MW at Anantpur & Kadapa. M/s NTPC has planned to set up 1000 MW in the said Solar Park.

Source : Ministry of New and Renewable Energy (MNRE) Presentation
I have a House in remote village in India, How can i make it self sufficient in terms of Electricity?

Subsidy is mainly available for solar power plants or solar water pumps.

To make your house in remote village in India self sufficient in terms of Electricity, we suggest you Belifal’s Surya Shakti Generator, the ultimate power box, which can take care of lights and fans and mobile charging. All three included in one super package at a very economical price.

Solar Home Lighting System DC 12v by Belifal with 2 LED Bulbs,Table fan, Electric Charger, battery, usb port for mobile charging and 25W solar panel – LED SOLAR

The other option of buying a solar hybrid inverter with big batteries and big solar panels can cost you minimum Rs. 30,000 which is also ok if you have the budget.

Solar Hybrid Calculator Solar Energy Calculator Solar Backup Time Calculator Solar Panel And Battery Suggestion Tool

Thanks

We advise our clients to contact us for a free site assessment followed by a site survey to arrive at the right system configuration and the best cost thus derived.

Kumaar Thakkar
Belifal Innovations & Technologies Pvt. Ltd.
MD & Chief Innovator (98210 72175 / 8080515555)