2. Introduction
Since ages and times have gone Sun star has played many roles globally. The
Egyptians invented solar dials to mark the daylight time frames way back 3000
years age, for others it had played a religious role.
As the time passed people discovered the
various components of Sun Energy from ultra
violet rays to beams, until recently more than
100 years ago some intellectuals discovered
Solar Energy which is a radiant light and heat
from the sun harnessed using a range of ever
evolving technologies such as solar heating
photovoltaic. The large magnitude of solar
energy available makes it a highly appealing
source of electricity.
A Step Towards Greener Future
3. Introduction
A Step Towards Greener Future
Among the intellectuals was Frank Shuman, an US inventor in 1897 who in his
invention tried to harness the solar energy and was successful to generate 42 to 50
mega watts of electricity.
Shuman built the world’s first Solar Thermal Power Station in Maadi, Egypt, between
1912 and 1913. Shuman’s plant used Parabolic Troughs to power a 45–52 Kilowatts
(60–70 HP) engine that pumped more than 22,000 litres (4,800 imp gal; 5,800 US gal)
of water per minute from the Nile River to adjacent cotton fields. Although the
outbreak of World War I and the discovery of cheap oil in the 1930s discouraged the
advancement of solar energy, Shuman’s vision and basic design were resurrected in
the 1970s with a new wave of interest in solar thermal energy.
In 1916 Shuman was quoted in the media advocating solar energy's utilization, saying:
We have proved the commercial profit of sun power in the tropics and have more
particularly proved that after our stores of oil and coal are exhausted the human race
can receive unlimited power from the rays of the sun.
— Frank Shuman, New York Times, July 2, 1916
5. A Step Towards Greener Future
1) It will increase countries’ energy security
through reliance on an indigenous,
inexhaustible and mostly import-independent
resource
2) Enhance sustainability
3) Reduce pollution
4) Lower the costs of mitigating climate change
5) Keep fossil fuel prices lower
These advantages are global. Hence the additional costs of the incentives for
Early deployment should be considered good investments
The development of affordable, inexhaustible and clean solar energy
technologies will have huge longer-term benefits.
Advantages
6. A Step Towards Greener Future
Electricity generation at the consumption centre
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
Higherself-consumption of solar electricity
Local employment generation
There are provisions of concessional import duty/excise duty exemption,
accelerated depreciation and tax holiday for setting up of grid connected
rooftop power plants.
Advantages
7. A Step Towards Greener Future
Benefits
On national level, reduces requirement of land for addition of solar
capacities.
For consumers, it– Reduces the dependency on grid power.– Mitigates
diesel generator dependency.– Long term reliable power source.
For Discoms, it reduces – Day Peak load Demand – T&D and conversion
losses as power is consumed at the point of generation.
Most suitable for commercial establishments– Max generation during peak
usage time – Solar power cost is close to the commercial power.
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.
Benefits of Roof top PV
8. A Step Towards Greener Future
According 2011 Census India is having
330 million houses.
166 million electrified houses.
76 million houses uses kerosene for lighting.
1.08 million houses are using solar for lighting.
140 million houses with proper roof (Concrete
or Asbestos / metal sheet).
130 million houses are having > 2 rooms.
Average house can accommodate 1-3 kWp of
solar PV system.
The large commercial roofs can accommodate
larger capacities.
As a conservative estimate, about 25000 MW
capacity can be accommodated on roofs of
buildings having > 2 rooms alone if we consider
20% roofs.
Benefits
Benefits of Roof top PV
9. States Initiatives in Rooftop
Gujarat: Initiated 5MW Rooftop Project in Gandhi Nagar in PPP model. 25MW in 5 other
cities also announced
Tamil Nadu: Has come up with a draft order on Net-Metering & REC
Andhra Pradesh: Solar Policy 2012 also promoting roof top solar projects
Rajasthan: has come up with rooftop solar policy in solar cities
Kerala: Launched its 10,000 rooftop power plants program for 2012-2013.Apart from the
MNRE’s 30% capital subsidy, the state also offers discount
West Bengal: Initiated a net-metering solar rooftop model promoting selfconsumption
Uttarakhand: Attractive feed-in-tariff by Electricity Regulatory Commission
Maharashtra: Solar policy is breathable and the conventional energy source can be
merged with the net metering policy.
“Rooftop Solar PV has huge potential and the government policies andregulations
should be enabling to promote large scale deployment".
Thank you
Benefits
10. States Initiatives in Rooftop
Gujarat: Initiated 5MW Rooftop Project in Gandhi Nagar in PPP model. 25MW in 5 other
cities also announced
Tamil Nadu: Has come up with a draft order on Net-Metering & REC
Andhra Pradesh: Solar Policy 2012 also promoting roof top solar projects
Rajasthan: has come up with rooftop solar policy in solar cities
Kerala: Launched its 10,000 rooftop power plants program for 2012-2013.Apart from the
MNRE’s 30% capital subsidy, the state also offers discount
West Bengal: Initiated a net-metering solar rooftop model promoting selfconsumption
Uttarakhand: Attractive feed-in-tariff by Electricity Regulatory Commission
Maharashtra: Solar policy is breathable and the conventional energy source can be
merged with the net metering policy.
“Rooftop Solar PV has huge potential and the government policies andregulations
should be enabling to promote large scale deployment".
Thank you
Benefits
