• Solar Plant

What does it take to create a solarplant?

Solar panels, inverter, net meter, junction box,wires, mechanical structure, Labor, plumbing, wiring, transport, coordination with Electricity Board. It amounts to 70 to 80 rs per watt for small scale. Solar Integrator shall coordinate with electricity board and solar ingredient suppliers to install a 10kw system at 7.5 lakh including 5% GST and maintenance. This amounts to 75 rs per watt.

What is a Solar Rooftop System?

In a solar rooftop system,the solar panels are installed on 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 – The solar electricity is stored in the battery and can be utilized during night also when the sun is not available

(ii) Grid Connected Solar Roof top 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 33kV/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.

Advantages of Solar Rooftop 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

How much money or power is generated per day?

A non shady Rooftop can be used to harness solar power through photovoltaic cells. The power generated will be purchased by BESCOM at a price of Rs3:50 per unit . A 600 sft  of rooftop area can accommodate 1 kw panel. Usually BESCOM permits only sanctioned load but on payment of a fee it can be bumped to 10 kw on an average. Total terrace space required for a 10 kw system is 600 sft

On an average only 5 hours is considered productive in a day. So a 10 kw solar plant will generate 50 units per day. So BESCOM will pay 50×3.5 Rs or Rs175 per day. In a year on an average only 300 days is conducive for solar power generation in Karnataka. Total units generated in a year from a 10kw system is 10x5x300= 15000 units or in terms of monetary value it is 15000×3.5= 52500 Rs per year Or on an average it is Rs 4375 per month. Through Battery Charging infrastructure a Volt Garden client can expect an income upto ~Rs 8500 per month.

 

How much money or power is generated per day?

A non shady Rooftop can be used to harness solar power through photovoltaic cells. The power generated will be purchased by BESCOM at a price of Rs3:50 per unit . A 600 sft  of rooftop area can accommodate 1 kw panel. Usually BESCOM permits only sanctioned load but on payment of a fee it can be bumped to 10 kw on an average. Total terrace space required for a 10 kw system is 600 sft

On an average only 5 hours is considered productive in a day. So a 10 kw solar plant will generate 50 units per day. So BESCOM will pay 50×3.5 Rs or Rs175 per day. In a year on an average only 300 days is conducive for solar power generation in Karnataka. Total units generated in a year from a 10kw system is 10x5x300= 15000 units or in terms of monetary value it is 15000×3.5= 52500 Rs per year Or on an average it is Rs 4375 per month. Through Battery Charging infrastructure a Volt Garden client can expect an income upto ~Rs 8500 per month.

 

Incentives by Government

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

  • There are provisions of concessional import duty/excise duty exemption, accelerated depreciation and tax holiday for setting up of grid connected rooftop power plants
  • 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. Sofar, nine PSBsnamely 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

Grid Size

The rooftop solar systems vary from 1 kWp upto 500 kWp or in combination can be set up on the roofs.

  • Aptamitra is targeting 10KWp installations on all residential establishments which have ~700 sft of rooftop space

Market Potential in India

India is endowed with vast solar energy potential. About 5,000 trillion  kWh per year energy is incident over India’s land area with most parts  receiving 3-5 kWh per sq. m per day. Based upon the availability of  land and solar radiation, the potential of solar power in the country  has been assessed to be 750GWp

  • According to a study conducted by TERI, a potential of 124 GWp SPV Rooftop plants has been estimated in the country. It is approximately

12.4 million homes with 10KW rooftop installations. Aptamitra Goal is to address0.008% by end of 2018.

  • This can be achieved through active supports from the States.
  • The Ministry has so far sanctioned 361 MWp aggregate capacity of grid connected rooftop solar systems in the country of which 42 MWp have beencommissioned.

What are the Various state Government Targets

Sr. No.State/UTTotal Commissioned Capacity till 28/02/2015 (MW)
1Andra Pradesh236.86
2Arunachal Pradesh0.025
3Chhattisgarh7.6
4Gujarat949.05
5Haryana12.8
6Jharkhand16
7Karnataka77
8Kerala0.025
9Madhya Pradesh499.58
10Maharashtra334.4
11Orissa31.76
12Punjab119.77
13Rajasthan902.1
14Tamil Nadu111.76
15Telangana8
16Uttar Pradesh49.71
17Uttarakhand5
18West Bengal7.21
19Andaman and Nicobar Islands5.1
20Delhi 5.465
21Lakshadweep0.75

What Are The Government’s Achievements with Solar Installations

Application Segment
Achievements
Grid solar power
(large plants, rooftop & distribution
grid plants)
3382.78 MW commissioned
Off-grid solar applications357.18 MW Sanctioned
Solar Thermal Collectors (SWHs,
solar cooking, solar cooling Industrial
process heat applications, etc.)
8.77 million sq. meter installed
Application Segment
Target Phase I (2010-13)Cumulative target For Phase 2 (2013-17) Cumulative target For Phase 2 (2017-22)
Grid solar power
(large plants, rooftop & distribution
grid plants)
1,100 MW10,000 MW20,000 MW
Off-grid solar applications200 MW1,000 MW2,000 MW
Solar Thermal Collectors (SWHs,
solar cooking, solar cooling Industrial
process heat applications, etc.)
7 Million Sq. Meters15 Million Sq. Meters20 Million Sq. Meters