FAQS
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.
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/11kV 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.
- 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
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.
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- States should have conducive solar policy to allow the grid connectivity.
- State Regulators have issued tariff order for appropriate tariff, net-metering/feed-in tariff and the grid connectivity.
- The Distribution Companies agree to allow grid connectivity and purchase the electricity on feed-in-tariff or through net metering arrangement.
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 (below33kV) of distribution network
The Projects with proposed installed capacity of minimum 50 kW and upto 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 than100kW and connected of the grid at LT level (400/ 415/ 440 volts for 3-phase or 230V for1-phase) shall fall within this category.
There can be many possible business models, some of which can be considered are as follows:
1.Solar installations owned by consumer
- Solar Rooftop facility owned, operated and maintained by the consumer(s)
- Solar Rooftop facility owned by consumer but operated and maintained by the 3rd party.
2.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:
- 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.
- 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.
Solar Installations Owned by the Utility
- 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.
- 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.
The programme is being implemented through multiple agencies for rapid up-scaling in an inclusive mode. These agencies are:
1. State Nodal Agencies(SNAs)
2. Solar Energy Corporation of India (SECI)
3. Channel Partners:
- Renewable Energy Service Providing Companies (RESCOs)
- System Integrators
- Manufactures of any component of the Solar Plants
- Project developers
- Vendors/ suppliers of solar equipment
- Reputed and relevant NGOs of National level
4. Financial Institutions/Financial Integrators
The Financial Institutions like NABARD, National Housing Banks, Other Banks, IREDA, SECI etc.
1.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.
The targets under JNNSM are as under :
Application Segment | Target for Phase I (2010- 13) | Cumulative Target for Phase 2 (2013-17) | Cumulative Target for Phase 3 (2017-22) |
---|---|---|---|
Grid solar power (large plants, roof top & distribution grid plants) | 1,100 MW | 10,000 MW | 20,000 MW |
Off-grid solar applications | 200 MW | 1,000 MW | 2,000 MW |
Solar Thermal Collectors (SWHs, solar cooking, solar cooling, Industrial process heat applications, etc.) | 7 million sq. meters | 15 million sq. meters | 20 million sq. meters |
The achievements against the targets fixed for Phase-I are as under :
Application Segment | Target for Phase I (2010- 13) | Achievements |
---|---|---|
Grid solar power (large plants, roof top & distribution grid plants) | 1,100 MW | 1686.44 MW commissioned |
Off-grid solar applications | 200 MW | 252.5 MW sanctioned |
Solar Thermal Collectors (SWHs, solar cooking, solar cooling, Industrial process heat applications, etc.) | 7 million sq. meters | 7.01 million sq. meter installed |
The achievements of JNNSM till date are :
Application Segment | Achievements |
---|---|
Grid solar power (large plants, roof top & distribution grid plants) | 3382.78 MW commissioned |
Off-grid solar applications | 357.18 MW sanctioned |
Solar Thermal Collectors (SWHs, solar cooking, solar cooling, Industrial process heat applications, etc.) | 8.77 million sq. meter installed |
The State-wise commissioned capacity of Grid Solar Power Projects in the country are as under :
Commissioning Status of Grid Connected Solar Power Projects under Various Schemes | ||
---|---|---|
SNO | State / UT | Total commissioned capacity till 28-02-15 (MW) |
1 | Andhra Pradesh | 236.86 |
2 | Arunachal Pradesh | 0.025 |
3 | Chhattisgarh | 7.6 |
4 | Gujarat | 949.05 |
5 | Haryana | 12.8 |
6 | Jharkhand | 16 |
7 | Karnataka | 77 |
8 | Kerala | 0.025 |
9 | Madhya Pradesh | 499.58 |
10 | Maharashtra | 334.4 |
11 | Orissa | 31.76 |
12 | Punjab | 119.77 |
13 | Rajasthan | 902.1 |
14 | Tamilnadu | 111.76 |
15 | Telangana | 8 |
16 | Uttar Pradesh | 49.71 |
17 | Uttarkhand | 5 |
18 | West Bengal | 7.21 |
19 | Andaman & Nicobar | 5.1 |
20 | Delhi | 5.465 |
21 | Lakshadweep | 0.75 |
22 | Puducherry | 0.025 |
23 | Chandigarh | 2 |
24 | Others | 0.79 |
Total | 3382.78 |
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 benefitting under the scheme.
Salient Features
- 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.
- 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.
- 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.
- The implementing agency will be sanctioned a grant of upto Rs.25 Lakh/Park for preparing Detailed Project Report (DPR) of the Solar Park.
- 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.
- 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.
- 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.