67-TN SOlar Energy Policy 2012

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TAMIL NADU SOLAR ENERGY
POLICY 2012

2

GOVERNMENT OF TAMIL NADU
TAMIL NADU SOLAR ENERGY POLICY

1

Preamble

4

2

Vision of the Government of Tamil Nadu

5

3

Title and Enforcement

5

4

Objectives

5

5

Target for Promotion of Solar Energy in the State

6

6

Shortages and Constraints in Fossil Fuel

6

7

Renewable Energy Installations in Tamil Nadu

6

8

Experience of Solar Energy in India

7

8.1 Global Solar Scenario

8

Technology Cost

8

10

Advantages of Solar Power

8

11

Solar Technologies

9

11.1 Solar Photovoltaic

9

9

11.2 Concentrated Solar Power (CSP) based Solar
Thermal Power Plant

10

11.2.1 Parabolic Trough Systems

10

11.2.2 Power Tower Systems

11

11.2.3 Parabolic Dish Systems

11

11.2.4 Thermal Storage Systems

12

12

Development of Solar Power in Tamil Nadu

12

13

Solar Purchase Obligation (SPO)

13

14

Mechanism to Generate 3000 MW by 2015

14

3

15

Promoting Solar Rooftop Systems

14

16

Promotion of Solar Water Heating Systems

15

17

Development of Solar Parks

16

18

Procurement Policy of Solar Power

16

19

Single Window Agency (TEDA)

17

20

Solar Manufacturing Facilities

17

21

Establishment of Solar Power Plants in Industrial
Estates

18

22

Policy Initiatives

19

23

Plant and Machinery

20

24

Formation of Empowered Committee

20

25

Research & Development and Capacity Building

21

4

SOLAR ENERGY POLICY - 2012
Government of Tamil Nadu
Energy Department

1. PREAMBLE
Conventional energy sources like coal, oil, natural gas, etc., are limited in
quantity, and if these continue to be depleted at the present rate, these will
be exhausted in the coming decades. Energy demand is resulting in the
creation of fossil fuel based power plants leading to substantial green house
gas emissions having an adverse impact on global warming and climate
change.
Solar energy offers a clean, climate-friendly, abundant and inexhaustible
energy resource to mankind. The costs of solar energy have been falling
rapidly and are entering new areas of competitiveness. Solar Thermal
Electricity (STE) and Solar Photo Voltaic Electricity (SPV) are becoming
competitive against conventional electricity generation in tropical countries.
Rooftop SPV in tropical countries can compete with high retail electricity
prices.

Solar Power installations worldwide are growing rapidly with nearly

18-20 Giga Watt (GW) expected to be installed in 2012.
Tamil Nadu has reasonably high solar insolation (5.6-6.0 kWh/sq. m) with
around 300 clear sunny days in a year.
Southern Tamil Nadu is considered to be one of the most suitable regions in
the country for the development of solar power projects. With substantial
solar insolation in the State, the strong commitment of the State Government
and rapidly declining Solar Power costs, there are remarkable opportunities in
the solar energy domain. This will enhance energy security, making Tamil
Nadu the global reference in the solar energy sector.

5

As on 30.9.2012, India has a total installed capacity of 2,07,876 MW, out of
which 20,162 MW is derived from Renewable Energy sources viz., Wind,
Biomass, Solar etc.
Knowing the importance of promoting solar power, the Government of India
has launched the Jawaharlal Nehru National Solar Mission (JNNSM) under the
National Action Plan for Climate Change (NAPCC). The goal of the Mission is
to provide tariff subsidies to increase scale and drive down costs to grid
parity for achieving a target of 22,000 MW by 2022 in a phased manner.
India has also fixed a self imposed renewable energy obligation with a
separate solar energy obligation.
2. VISION OF THE GOVERNMENT OF TAMILNADU
The Honourable Chief Minister Selvi J Jayalalithaa has a vision of developing
Tamil Nadu as a world leader in Solar Energy by establishing 3000 MW by
2015.
Tamil Nadu is committed to leading the country by generating 3000 MW of
Solar Power by 2015 through a policy conducive to promoting solar energy in
the State. This Government headed by the Hon’ble Chief Minister Selvi J
Jayalalithaa, intends to make Solar Energy a people’s movement just as it did
earlier in the case of Rain Water Harvesting.
3. TITLE AND ENFORCEMENT
This policy will be known as the “Tamil Nadu Solar Energy Policy - 2012”. The
Government of Tamil Nadu will undertake a review of this Policy as and when
required in view of any technological breakthrough or any changes taking
place in the policy at the National level.
4. OBJECTIVES


To achieve energy security.



To reduce carbon emissions.



To project Tamil Nadu as a Solar Hub.



To generate 3000 MW of Solar Energy by 2015.



To achieve grid parity by 2015.



To encourage indigenous solar manufacturing facilities in the State.

6



To promote Research and Development in the solar energy sector and
hybrid systems.



To create skilled man power and employment in a new industry.

5. TARGET FOR PROMOTION OF SOLAR ENERGY IN THE STATE
It is proposed to generate 3000 MW of Solar Energy by 2015.
6. SHORTAGES AND CONSTRAINTS IN FOSSIL FUEL
Out of the Nation’s installed capacity of 2,07,876 MW, the contribution of
Thermal (coal/oil/gas) based power is around 67% causing huge emission of
Green House Gases, thus making renewable sources of energy one of the
critical sources of power in the future.


Coal production in India is falling short of projection and there is a need
to import a quantity much larger than what was planned for earlier.
Further,

the

price

of

imported

coal

has

been

hiked

by

1.5 times over the last couple of years, causing concern with regard to
the viability of operation of many thermal power stations. The major
supplier Coal India Limited is already facing massive problems in
providing coal for the existing plants.


55% of India’s Coal Supplies to thermal power plants have been
affected due to the recent regulatory changes made in Indonesia and
Australia.

In order to bridge the gap between demand and supply, taking into account
the availability of fossil fuels, it is necessary to concentrate on renewable
energy such as solar energy.
7. RENEWABLE ENERGY INSTALLATIONS IN TAMIL NADU
Tamil

Nadu

leads

the

country

in

terms

of

renewable

energy

installations. Tamil Nadu is the pioneer State in harnessing wind energy and
remains at the No.1 position in the country. At present 40% of the country’s
installed

wind

energy

capacity

is

contributed

by

Tamil Nadu. The erection of wind electric generators started during 1986 and
gained momentum during the early 90’s and again achieved huge growth

7

during the years 2001-2006, during the tenure of the All India Anna Dravida
Munnetra Kazhagam Government headed by Selvi J Jayalalithaa.
As on 31.3.2012, the installed capacity of wind power has grown to 6,970
MW and an addition of 6000 MW is anticipated during the 12th Five Year Plan
(2012-2017). This is due to the availability of high wind potential in Tamil
Nadu as well as the conducive policies of the State Government. The
contribution of energy from wind alone to the State grid during 2011-2012 is
9763 MU, which is around 12.6% of the total energy consumed by the State.
Similarly, Tamil Nadu is a pioneer in establishing projects in the following
Renewable Energy sectors also:
1. Bagasse based co-generation in sugar mills
2. Biomass based power projects
3. Biomass based gasification projects
4. Bio-methanation projects from Industrial / Poultry / Sago waste.
Biomass is limited by the availability of feedstock.

While wind energy is

seasonal and also variable on a daily basis, solar energy has better
predictability and follows the sunrise to sunset pattern on a daily basis. The
generation profile of solar energy can complement the Wind energy profile
and help stabilize the grid. Solar energy will play a vital role in the years to
come since the cost of installation is coming down drastically and grid parity
is anticipated before 2015.
8.

EXPERIENCE OF SOLAR ENERGY IN INDIA

India has high solar insolation. India being a tropical country receives
adequate solar radiation for 300 days, amounting to 3,000 hours of sunshine
equivalent to over 5,000 trillion kWh. Almost all the regions receive 4-7 kWh
of solar radiation per sq. metre with about 2,300–3,200 sunshine hours/year,
depending upon the location.

8

In July 2009, the Government of India unveiled a plan to produce 22 GW of
solar power by 2020 under the Jawaharlal Nehru National Solar Mission
(JNNSM).
Solar Energy is undergoing a silent revolution in India. The falling prices of
Solar panels are on the verge of coincidence with the growing cost of grid
power in India.
8.1 Global Solar Scenario
The Global solar market is expected to have an installed capacity of
227 Gigawatts (GW) by 2016. Global solar installations, meanwhile, are
expected to reach 46.8 GW per annum in 2016, up from 19.8 GW in 2011,
with a Compounded Annual Growth Rate (CAGR) of 18.7 percent during the
same period.
9.

TECHNOLOGY COST

The installed capacity of solar power has grown at a rate of 40 percent per
year over the last decade. As the industry has grown, the prices have seen
cost reductions of 22 percent for each doubling of cumulative capacity over
the last few decades.
10.

ADVANTAGES OF SOLAR POWER

Solar Energy provides the best viable solution to ensure long term energy
sustainability with the following advantages:


Abundant, constant and perennial source, predictable



Solar resource is much more evenly distributed across the State



Low gestation period



Available during the day time, helping in peak demand



Can be generated at the point of consumption



Reduced Transmission & Distribution losses



No fuel cost



Clean & green power i.e., no emission of CO2, Sox, Nox etc.,



Much firmer and complements Wind Energy.

9

In case of Solar Photo Voltaic (SPV) technology, the plant can be
established from few kW to 100s of MW and it is also easily scalable.
If SPV plants are established very near to Industrial Estates, the power
produced can well be utilized at the same location drastically reducing T&D
losses. Huge investment needed for transmission infrastructure could also
be prevented.
Solar Thermal Power Generation has an additional advantage of storing of
heat energy, which can be used to produce electricity during non sunny
hours.
11. SOLAR TECHNOLOGIES

11.1 Solar Photovoltaic

Solar

photovoltaic

(SPV)

cells

convert

solar

radiation

(sunlight)

into

electricity. A solar cell is a semi-conducting device made of Silicon materials,
which, when exposed to sunlight, generates electricity. Solar cells are
connected in series and parallel combinations to form modules that provide
the required power. PV modules are manufactured by assembling the solar
cells after stringing, tabbing and providing other interconnections.

10

Types of SPV Technologies
Cell Type

Efficiency of Cell

Land
per MW

Mono crystalline Silicon

Around 18%-24%.

3-4 Acres

Poly/
Multi crystalline Silicon

Around 14-18%

4-5 Acres

Thin film (Different
Types)

Amorphous silicon 6-10%.
Cadmium Telluride 1011%
Copper Indium Gallium
Diselenide 12-14%

7.5 to 9
Acres

11.2 Concentrated Solar Power (CSP) based
Solar Thermal Power Plant

Solar Thermal Power systems, also known as Concentrating Solar Power
systems, use concentrated solar radiation as a high temperature energy
source to produce electricity using the thermal route.
CSP requires 7.5 acres to 10 acres / MW.
High temperature solar energy collectors are basically of three types:
11.2.1

Parabolic Trough Systems

Trough solar systems use parabolic curved/ trough shaped reflectors that
focus the sun's energy onto a receiver pipe running at the focus of the
reflector. The concentrated energy heats a heat transfer fluid (HTF), usually
oil, flowing through the pipe. This fluid is then used to generate steam which

11

powers a turbine. In a parabolic trough system, the receiver can reach 400°
C and produce steam for generating electricity.
11.2.2

Power Tower Systems

The solar power tower plant comprises an array of heliostats (mirrors) which
concentrates the sun's rays on the top of the high tower where the solar
receiver is located. The receiver collects the concentrated sun radiation and
transfers the energy to generate steam. (The reflected rays of the sun are
always aimed at the receiver, where temperatures well above 1000° C can be
reached.) The steam drives the turbo generator thereby producing electricity.

11.2.3

Parabolic Dish Systems
The solar dish generates electricity by focusing the sun’s
rays onto a receiver, which transmits the heat energy to
an engine. The engine is a sealed system filled with
hydrogen, and as the gas heats and cools, its pressure
rises and falls. The change in pressure drives the pistons

inside the engine, producing mechanical power. The mechanical power in turn
drives a generator and produces electricity. The solar dish sterling system
could be well deployed for decentralised power generation. Parabolic dish
systems can reach 1000° C at the receiver, and achieve the highest
efficiencies for converting solar energy to electricity.

12

11.2.4

Thermal Storage Systems

A major advantage in a Solar Thermal Plant compared to SPV/other
renewable energy is the thermal storage system, i.e., before using the heat
to generate steam, a part of the heat can be stored for later use/ during peak
hours. Solar thermal energy can be stored at high temperatures using molten
salts/other materials. A part of the heat energy is stored as heat and the rest
is used for generating steam to run the steam turbine. The stored heat can
be used later to generate power. The collector field can be sized according to
the need. Thus, thermal Energy storage systems can extend the operational
time of Solar Thermal Power plants by 6-12 hours.
Storing heat energy is cheaper than storing energy in any other form. By
building a sufficiently large heat storage system, it is possible to generate
power even when the sun is not shining.
12. DEVELOPMENT OF SOLAR POWER IN TAMIL NADU
PHASE
(2013-2015)
2013

Total

Target
(MW)
1000

2014

1000

2015

1000

(By 2015)

3000

With average solar incidence of 5.5 - 6 kWh/m2/day, Tamil Nadu is amongst
the States with the highest solar insolation in India. To retain its leadership
position, Tamil Nadu will promote setting up of solar power projects to the
extent of 3000 MW over a period of 3 years, as furnished above.

Tamil Nadu will actively promote the solar energy sector by prescribing
a certain percentage of electricity consumption through solar energy as
mandatory. This will be progressively increased.

13

13.

SOLAR PURCHASE OBLIGATION (SPO)

The State will mandate 6% SPO (starting with 3% till December 2013 & 6%
from January 2014) for the following category of consumers:
a.

HT Consumers (HT Tariff I to V)
This category will cover all HT consumers including:
1. Special Economic Zones (SEZs)
2. Industries guaranteed with 24/7 power supply
3. IT Parks, Telecom Towers
4. All Colleges & Residential Schools
5. Buildings with a built up area of 20,000 sq.m. or more

b.

LT Commercial (LT Tariff V)

The following categories of consumers will be exempted from SPO:
1. Domestic consumers
2. Huts
3. Cottage and Tiny Industries
4. Powerlooms
5. LT Industrial consumers
6. Agricultural consumers
The SPO will be administered by TANGEDCO.
The above obligated consumers may fulfill their SPO by:
a.

Generating captive Solar Power in Tamil Nadu equivalent to or more
than their SPO

b.

Buying equivalent to or more than their SPO from other third party
developers of Solar Power projects in Tamil Nadu

c.

Buying RECs generated by Solar Power projects in Tamil Nadu
equivalent to or more than their SPO.

d.

Purchasing power from TANGEDCO at Solar Tariff

14

Consumers desirous of availing SPO exemption by captive solar generation
shall necessarily install separate meters to measure captive generation.
This mechanism will require generation of 1000 MW by 2015.
14.

MECHANISM TO GENERATE 3000 MW BY 2015

The 3000 MW of Solar Power will be achieved through Utility Scale Projects,
Rooftops, and under REC mechanism as follows:

Utility
Scale
(MW)

Solar Roof
Tops

(a)
2013

REC
(MW)

Total
(MW)

(b)

(c)

(a)+(b)+
(C)

750

100

150

1000

2014

550

125

325

1000

2015

200

125

675

1000

Total

1500

350

1150

3000

(MW)

In utility scale out of 1500 MW, 1000 MW will be funded through SPO and
balance 500 MW through Generation Based Incentive (GBI) provided by the
Government.
15.

PROMOTING SOLAR ROOF TOP SYSTEMS

The Government of Tamil Nadu will promote Solar Rooftops through the
following measures:
i.

Domestic Rooftop GBI
All domestic consumers will be encouraged to put up roof-top solar
installations.

A

generation

based

incentive

(GBI)

of

Rs 2 per unit for first two years, Re 1 per unit for next two years,
and Re 0.5 per unit for subsequent 2 years will be provided for all
solar or solar-wind hybrid rooftops being installed before 31 March,
2014. A capacity addition of 50 MW is targeted under this scheme.

15

Consumers desirous of availing GBI shall necessarily install separate
meters to measure rooftop generation.
ii.

Promoting Rooftops in Government
a. Solar Home Lighting is being installed in 3 lakh houses under
the Chief Minister’s Solar Powered Green House Scheme
(CMSPGHS) and will be completed by 2015-2016
b. Energisation of Street Lights with Solar energy. The State will
be energizing 1 lakh street lights through solar energy by
2015-2016.
c. All new Government/Local Body buildings shall necessarily
install solar rooftops.
d. Existing Government/Local Body buildings will be provided
with solar rooftops in a phased manner.
e. All Street Lights and Water Supply installations in local bodies
will be energized through solar power in a phased manner.

16.

PROMOTION OF SOLAR WATER HEATING SYSTEMS
i. Public Buildings
The Government of Tamil Nadu has issued amendments to the Building
Rules through the following Government Orders, making the use of solar
water heating systems mandatory for all designated new Houses
/buildings/ Marriage halls / hotels etc.,
• G.O. Ms. No. 112, Municipal Administration and Water Supply
(MA1) Dept. dated 16.8.2002.
• G.O. Ms. No. 277, Housing and Urban Development (UD 1) Dept.
dated 14.11.2002.

The State will promote Solar Water Heating systems by suitably amending
the relevant Acts of Municipalities/Corporations.

16

ii. Industries
Installation of Solar water heating systems will be made mandatory for
industries having hot water boiler/ steam boiler using fossil fuel.
17.

DEVELOPMENT OF SOLAR PARKS.

Utility scale solar parks may comprise 250 MW in sizes of 1 to 5 MW,
600 MW in sizes of 5 to 10 MW and 650 MW of sizes above 10 MW. Solar
Power projects will be developed through competitive/reverse bidding. Solar
Parks

with

a

capacity

of

about

50

MW

each

will

be

targeted

in

24 districts.
18.

PROCUREMENT POLICY OF SOLAR POWER

18.1 Tariff based competitive Bidding.
As solar power is expensive compared to conventional/other renewable
energy, a cost effective methodology needs to be evolved to promote solar
power generation systems.
Tamil Nadu will select developers through Tariff based reverse/competitive
bidding. The recent experiences of Germany and Spain also prove that
competitive bidding is the best way for adoption by Governments. The
Government of India through NTPC Vidyut Vyapar Nigam Ltd (NVVN) also
follows the competitive bidding process.
Investments through Joint Ventures by State Public Sector Undertakings will
also be encouraged at competitive tariffs.
18.2 Renewable Energy Certificate and Carbon Credits.
Renewable Energy Certificate (REC) mechanism promotes trading of solar
power to meet solar purchase obligations (SPO). All the obligated entities
committed to meet SPO will necessarily have to either produce solar power
(captive) or buy solar power from TANGEDCO or purchase Solar RE
Certificates for an equivalent quantity through the Power Exchange from the
Promoters who have tradable RE Certificates.

17

Under this mechanism Solar power promoters are eligible to possess one
tradable RE Certificate per every 1000 units of energy (1 MWh) wheeled to
the Distribution utility or to any other licensee.
The promoter can trade the Certificates to the SPO consumers within the
regulated price band as dictated by the market forces from time to time.
All solar power producers are eligible to avail of the Clean Development
Mechanism (CDM) benefits to enhance the viability of the projects.

19.

SINGLE WINDOW AGENCY (TEDA)

Various statutory clearances that are essential for the development and
commissioning of Solar Energy Projects will be handled by TEDA in
co-ordination with the concerned departments/agencies.

Guaranteed single

window clearance will be provided through TEDA in 30 days so that the plants
can be commissioned in less than 12 months.

20. SOLAR MANUFACTURING FACILITIES

The Government of Tamil Nadu will promote integrated solar generation and
manufacturing parks which will house the entire ecosystem for solar
manufacturing including wafer, cell and module making, and Balance of
System (BOS) component manufacturing. Local solar manufacturing industry
(around 1000 MW/annum) will result in substantial direct and indirect job
creation

in

the

supporting

sectors.

Manufacturing

of

Solar

Thermal

components will also be encouraged.
The Government will encourage indigenous manufacturing of solar panels and
other related equipment.
20.1 Incentives to Manufacturers
Appropriate tax incentives as per the Tamil Nadu Industrial Policy will be
provided to attract investors from India and abroad.

18

Tamil Nadu will actively support the growth of local manufacturing of solar
components and ancillaries. A solar manufacturing ecosystem will be created
that include solar research centres, test facilities, resource assessment
facilities, educational institutions, training centres, etc.
20.2 Global industry leaders in solar energy value chain
Global majors will be invited to invest in the creation of manufacturing
facilities in Tamil Nadu, with appropriate incentives as detailed above. Tamil
Nadu will position itself as the regional hub for integrated solar manufacturing
and technology development.
20.3 Exclusive Solar Manufacturing Parks
Lands will be identified for development of exclusive solar manufacturing
parks. The State will promote setting up of solar manufacturing industries in
these exclusive solar manufacturing parks to be established in the State.
20.4 Requirements for Poly Silicon Manufacturing
A Poly Silicon capacity of 10,000 MT would be required to yield silicon wafers
sufficient to produce 1000 MW.
20.5 Preference in Industrial Parks
Preference will be given for establishing Solar manufacturing industries in the
SEZs /Industrial estates /Parks viz., SIPCOT, SIDCO and similar Government
organizations.

21.

ESTABLISHMENT OF SOLAR POWER PLANTS IN
INDUSTRIAL ESTATES
In order to reduce the Transmission & Distribution losses, Aggregate
Technical

&

Commercial

(AT&C)

losses

and

other

infrastructure

expenditure, Solar Power Plants will be set up in all industrial estates
subject to availability of land at reasonable cost.

19

22.

POLICY INITIATIVES
22.1

Net Metering
Net metering will be allowed (at multiple voltage levels) to promote
rooftop penetration.
Net metering facility will be extended to Solar power systems
installed

in

commercial

establishments

and

individual

homes

connected to the electrical grid to feed excess power back

to the

grid with “power credits” accruing to the Photovoltaic energy
producer.
Projects to evacuate power at suitable voltages as suggested below:
Solar PV System Size Grid Connected

22.2

<10kWp

240V

10kWp to <15kWp

240V / 415V

15kWp to <50KWp

415V

50kWp to <100kWp

415V

> 100kWp

11Kv

Wheeling and Banking Charges
The wheeling and banking charges for wheeling of power generated
from the Solar Power Projects, to the desired locations for captive
use/third party sale within the State will be as per the orders of the
Tamil Nadu Electricity Regulatory Commission.
22.3 Exemption from payment of Electricity Tax
Exemption from payment of electricity tax to the extent of
100% on electricity generated from Solar power projects used for
self-consumption/sale to utility will be allowed for 5 years.

20

22.4 Tax Concessions
Tax concessions as per the Tamil Nadu Industrial Policy will be
provided.
22.5 Exemption from Demand Cut
Exemption from demand cut to the extent of 100% of the installed
capacity assigned for captive use purpose will be allowed.
22.6

Facilitation by the Nodal Agency

TEDA shall endeavour to facilitate the development of the projects in
the following areas:* All statutory clearances from Govt. Departments / Agencies
* Evacuation approval from State Transmission Utility
* Connectivity to the substation of State Transmission Utility
* Common clearances from TNPCB etc., whenever feasible for
providing plug and play facility to Solar Developers
23.

PLANT AND MACHINERY

Only new plant and machinery are encouraged as per international
standards. Such machineries/ components

will be approved either by the

Ministry of New and Renewable Energy, Government of India, or by approved
test centers in India/International test houses. Only plants/machineries which
give Plant Load Factor (PLF) as per the latest standards will be permitted.
24. FORMATION OF EMPOWERED COMMITTEE
An Empowered Committee under the Chairmanship of the Honourable
Minister for Electricity with the following members will accord project
clearances for the establishment of solar power projects to be bid out in the
State:


Chief Secretary

21



Finance Secretary



Energy Secretary



CMD/TANGEDCO



CMD TEDA – Member Secretary



One Technical Officer from TANGEDCO

25. RESEARCH AND DEVELOPMENT AND CAPACITY BUILDING
Research and Development on solar technologies / solar thermal storage
systems, testing facilities towards the development of solar technologies will
be encouraged. Technology Demonstrations on innovative projects in
association with reputed institutions will also be encouraged.
To effectively implement this policy and to achieve the intended objectives,
the Tamil Nadu Energy Development Agency (TEDA) will promote capacity
building in the area of Solar Energy.
****

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