Rooftop Solar PV Developments in Indian States
Some of the state governments has already initiated their rooftop solar PV programs and introduced feed in tariffs to attract the investments in rooftop solar PV projects.
In Gujarat government initiated a 5MW Rooftop Project in Gandhi Nagar in PPP model. In this scheme the generated power from the rooftop solar is completely fed to the grid. The rooftop owner gets paid lease rent (Rs.3.00 per unit) and the project developer gets feed-in-tariff (Rs.11.21) for 25 years. Looking at the success of this project the government has recently scaled up this rooftop scheme for development of 25 MW in 5 other cities.
Similarly Kerala launched its 10,000 rooftop power plants program for 2012-2013. In this scheme each applicant eligible to apply for 1 kW only, and the total capacity target is 10 MW . • Due to the small per capita limit; the target audience will be only households and small cottage industries. Apart from the MNRE’s 30% capital subsidy, the state is offering a discount of Rs. 39,000 per system.
West Bengal has initiated a net-metering solar rooftop model promoting self consumption. Under the WBERC Regulations, grid-integrated rooftop PV is allowed only for institutional consumers like government departments, academic institutions, etc. The system size limited to 2-100 kW, Connectivity is allowed at Low Voltage or Medium Voltage, or 6 KV or 11 KV, of the distribution system of the licensee. Solar injection is permitted only up-to 90% of the annual electricity consumption, and the net energy supplied by the utility would be billed as per existing slab tariffs. Solar generation would first offset consumption in the highest tariff slab and then the lower slab. The Policy targets 16 MW of rooftop and small PV installations by 2017.
Tamilnadu introduced its solar policy inn 2012 with a targets 3000 MW solar power by 2015. This target include the 350 MW of rooftop solar PV installations. The proposed capacity of rooftop SPV capacity will be implemented in three phases of 100, 125 and 125 MW (per year) during 2013-2015. In this government of Tamilnadu will also target the domestic consumers for 50 MW rooftop capacity. The domestic customers will receive a GBI of Rs. 2/kWh for the first two years, Rs. 1/kWh for the next two and Rs. 0.5/kWh for the subsequent two years. The government also targets 300 MW from government buildings and government schemes for rural and urban lighting.. In order to promote the solar PV in its industrial and commercial consumers, the government has mandated 6% SPO for HT consumers to achieve targets.. TEDA is designated single window agency for implementing solar projects. The connectivity to rooftop systems shall be at 240 V for rooftop systems up to 10 kW capacity. However the connectivity will be provided at 415V fir rooftop systems up to 100 KW capacity.
AP Solar Policy 2012 is also promoting roof top solar projects. Presently the scheme is launched for 3 phase service consumers and net metering guidelines have been issued. The surplus exported power will be bought by the Discom at a rate of Rs.3.50 per unit for 7 years.
Rooftop Schemes through MNRE/SECI
MNRE has recently a pilot scheme for grid connected rooftop PV power projects. The scheme allows system size from 100 kW to 500 kW . Aggregation of capacity from smaller roofs is allowed. Systems are to be grid connected without battery back up. Solar power would be exported to grid, whenever in excess of the consumption of the building. SECI will implement the scheme through competitive bidding on the project cost. The selected bidders in each city will implement the projects. 30% of the cost would be provided as subsidy and 70% to be met by the consumer.
Phase-I of this scheme is already started with the following allocations:
- Chennai – 2 MW
- Bangalore – 2 MW
- Delhi – 1 MW
- Gurgaon – 0.5 MW
Phase-II: Bids invited for a capacity of 11.1 MW:
- Jaipur – 3.1 MW
- Bhubaneswar/Cuttack – 1 MW
- Hyderabad – 2 MW
- Gurgaon – 1.5 MW
- NOIDA/ Gr . NOIDA – 1.5 MW
- Raipur – 2 MW