indian solar radiation data analysis

8/18/2019 Indian Solar Radiation Data Analysis

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Indian solar radiation data

Analysis, assessment and applications

Prof. M.M. Wagh


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Indian solar radiation data analysis

The move is aimed at enabling states and developers of solar power

projects take investment decisions based on scientic rationale.

M"#$ have already set %p &' solar monitoring stations forassessment of solar power in the co%ntry, which are going toe(pand...)* more s%ch stations shall come, and very soon entireco%ntry wo%ld be covered.

The stations have e+%ipment to record all types of data on radiation,from s%n, especially at sites that fall in ones receiving higher directsolar radiation in a view to generate investment-grade solar radiationdata.

The ministry has assigned the task of solar radiation monitoring to -W$T, hennai, as centralised data collection now being done there.


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• M"#$ is also looking to give a s%bsidy p%sh to the rooftopprojects in renewable and is m%lling a special scheme forthe p%rpose.

M"#$ is coming o%t with a separate scheme to give ap%sh to rooftop and want to open o%t this sector in s%ch amanner that people can generate power from their roofsfor themselves and p%t s%rpl%s power directly into the

grid, witho%t it being stored in batteries rst

People sho%ld be able to generate power at the cost of #s/ to 0 per %nit and with some s%bsidy it sho%ld comedown to #s & to ) per %nit and get stabilised over ne(t 1&years, .

#ooftop has the potential to change the face of powergeneration in India, it is for the power distrib%tioncompanies to %nderstand its importance.


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• A st%dy %ndertaken by the ministry with ind%stry e(perts shows that forne(t ve years there will be no tro%ble in p%tting power directly into grid.

In c%rrent 2ive-3ear plan, the target for renewable energy in the co%ntryhas been set at 4*,*** MW, which re+%ire an estimated investment of #s

1.& lakh crore.

56f this 4*,*** MW, '&,*** MW is for wind, '*,*** MW for solar, 4,***MW for hydro and balance for other reso%rces like bio-mass etc.

Abo%t India7s power scenario, the co%ntry has over 1 lakh MW of installed

capacity, besides 4*,*** to 8*,*** MW capacity of captive generation.

The renewable installed capacity is now 1&,*** MW, which is '1 per centof installed capacity and & per cent of the energy %sed.

6n "ational 9olar Mission,the target of 1*,*** MW for the rst phaseending March 1*'4 will be met and shall e(ceed both in terms of grid and

o:-grid.

In the second phase, the target is to achieve '*,*** MW by 1*';. The


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Solar Radiation Resource

Assessment•

Ministry of "ew and #enewable $nergy=M"#$> has initiated a major project on 9olar#adiation #eso%rce Assessment =9##A>across the nation to assess and +%antify the

solar radiation availability along with weatherparameters with a view to develop 9olar

Atlas. entre for Wind $nergy Technology =-W$T>, hennai is implementing the project by

installing a network of &' A%tomatic 9olar#adiation Monitoring 9tations =A9#M9> in therst phase in di:erent 9tates %sing high+%ality, high resol%tion

e+%ipment?instr%ments.


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• $ach A9#M9 consists of two towers of '.& mand ) m tall each. The '.& m tall tower ho%ses

a 9olar Tracker e+%ipped with Pyranometer,Pyranometer with 9haded #ing andPyrheliometer to meas%re solar parameters,s%ch as, global, di:%sed and direct radiation.

• The ) m tall tower ho%ses instr%mentsmeas%ring rainfall, ambient temperat%re,atmospheric press%re, relative h%midity, windspeed and direction. $ach A9#M9 is totally

powered by ')* Watt 9P@ Panels and consistsof '4 e+%ipments?instr%ments and records 4;parameters incl%sive of both meas%red and

derived.


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• The data from each A9#M9 averagedto '* min%tes will be transmitted to a

entral #eceiving 9tation establishedat -W$T, hennai thro%gh wise data received from eachA9#M9 is available on -W$T websiteas test r%n.


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Solar Radiation data in India

• India is endowed with rich solar energy

reso%rce since it is located in the e+%atorials%n belt of the earth. Theoretically Indias solarpower reception is abo%t &*** trillionkWh?year with abo%t 4** clear s%nny days in a

year. The daily average solar energy incidentover India varies from 8 to ; kWh?m1 withabo%t 1,4**B4,1** s%nshine ho%rs per year,depending %pon location. This is far more thanc%rrent total energy cons%mption.

• The daily average global radiation is aro%nd &Cwh?m1 in north - eastern and hilly areas toabo%t ; Cwh?m1 in Western regions and colddesert areas.


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• The ann%al global radiation varies from ')**to 11** kWh?m1, which is comparable with

radiation received in the tropical and s%b-tropical regions. Altho%gh the highest ann%alglobal radiation is received in #ajasthan,northern


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9olar radiation in Maharashtra

• Gh%le and Ealgaon from northMaharashtra, 6smanabad andA%rangabad from Marathwada and

handrap%r and Wardha districts of@idarbha have the highest e(pos%reto solar rays.


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9olar radiation in #ajasthan

• The direct normal insolation over#ajasthan varies from '/** Cwh?m1to 1)**Cwh?m1. Mostly the western

part of #ajasthan is blessed withab%ndant solar energy. Eodhp%r in#ajasthan is receiving ma(im%m

solar radiation which is known as 9%nity of India. #ajasthan is alsoblessed with ab%ndant land, so it

wo%ld be ideal for solar P@.


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9olar #adiation in


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Girect normal irradiance at location

indian solar radiation data analysis

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