rooftop solar – telangana.docx

8/19/2019 Rooftop Solar – Telangana.docx

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Rooftop Solar – Telangana

Wish to have a rooftop solar power plant in or around Telangana? Use this State-specific guide from Kleancell Technologies to get an overview of solar power potential for Telangana, and things to watch out for while installing a rooftop solar power plant in this region.

ighlights !verage annual radiation in Telangana is ".## $Wh%m&%da' with a(out )** sunn'da's Usa(le !+ power generated (' solar plants in Telangana is # $Wh%$W%da'or more, on average over a 'ear Telangana industrial and commercial energ'

consumers pa' grid tariff of Rs. ." - .#, or more. !t Rs. #." - "%$Wh or less,solar ma' (e cheaper than grid power for some consumers, and cheaper thandiesel power of Rs. /%$Wh for all consumers 0verview Telangana is situateda(out 1 2orth of the 34uator and has an a(undance of sunlight. +om(ined withunrelia(le utilit' power and rising cost of diesel power, it is no surprise that theState is seeing solar panels on an increasing num(er of rooftops. 5ndustrial andcommercial units here can (enefit greatl' from the advantages of solar power (utshould also $eep in mind several constraints when designing the solar s'stem.We will (e discussing (oth (elow.

0verviewTelangana is situated a(out 1 2orth of the 34uator and has an a(undance of sunlight. +om(ined with unrelia(le utilit' power and rising cost of diesel power, itis no surprise that the cit' is seeing solar panels on an increasing num(er of rooftops. 5ndustrial and commercial units here can (enefit greatl' from theadvantages of solar power (ut should also $eep in mind several constraints whendesigning the solar s'stem. We will (e discussing (oth (elow.

Solar 3nerg' 6eneration in Telangana !verage annual radiation in Telangana isa(out ".## $Wh%m&%da' with a(out )** sunn' da's in a 'ear. This ta(le providesthe monthl' values. Radiation 7ata for 'dera(ad 8.)*1 2, /.#*1 39.

Kleancell Technologieswww.kleancelltechnologies.com [email protected]

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MonthRadiation Incident On AnEquator-Pointed TiltedSurface (kWh!"da#$

%u!&er of non-sunshine da#s

'an )* +),

.e& /)0/ +)/

Mar /) ")A1ril /)"* +)+

Ma# /)2 +)"

'une 0) )0/

'ul# 0)"+ 0)*+

Agu +)** 0),+

Se1 0) 0)"0

Oct )2 ,),

%o3 )/ /)*0

4ec )// /)5

AnnualA3erage )00 /)0

Source: NASA Atmospheric Science Data Center

This radiation is converted into 7+ power (' the solar panels and is thenconverted into !+ (' the inverter. Some of the energ' is lost in this process.T'picall', usa(le !+ generation of # $Wh per da' per $W of solar plant capacit' isthe average for Telangana over the course of a 'ear i.e., a ** $W rooftop solar plant will deliver a(out #** units of electricit' per da' on average.

Solar Power Advantages for Hyderabad

Energy security – Rooftop solar plants can deliver power during load-shedding,ensuring that critical loads are alwa's running in the commercial%industrial facilit'2ot all solar plant configurations can deliver power during load-shedding.

Cost-effective – Rooftop solar power has a levelised cost of Rs. #." -"%$Wh 8or less9, considera(l' lower than diesel power at Rs. /%$Wh 8or more9. !dditionall','our energ' cost is now fi:ed for the ne:t &" 'ears, unli$e diesel power which

$eeps increasing 6rid power tariff is a(out Rs. ." - .# for 5ndustrial and








+ommercial consumers in Telangana. 5f penalties are imposed for e:cessconsumption the effective tariff is even higher. Rooftop solar power ma' (echeaper than even grid power, (ut this varies on a case-to-case (asis.

Reliable – ! rooftop solar power plant has no moving parts, ensuring relia(lepower over &" 'ears

Minimal maintenance – ! solar plant re4uires ver' little maintenance from theenerg' consumer +leaning the solar panels once in ever' months isrecommended to ensure that sunlight is not (loc$ed from reaching the solar cells.

Fleible configurations – Solar panels can (e installed on different $inds of

roofs, including par$ing lot roofs, as long as the structure%mounting points can(ear the weight of the panels. The' are also highl' scala(le, with rooftop plantsranging in capacit' from less than $W to more than ;W.

Constraints for Solar Power in !elangana"

Roofto# s#ace – The capacit' of the solar plant that can (e installed ma' (econstrained (' lac$ of sufficient shadow-free rooftop space. Roof re4uirementsare discussed in detail here< a rule of thum( is that 'ou will need a(out ** Sft of

shade-free roof area for $W of solar panels. 5nsufficient roof area will mean thatthe capacit' of the solar plant on 'our roof ma' (e sufficient to meet onl' part of 'our electrical load.

• When estimating the availa(le roof area an' alternate uses of the roof

should (e considered. 3levated mounting structures ma' (e used if thealternate use of the roof is to continue.

$nfirm #ower – Solar power is dependent on the sun shining, and output variesdepending on meteorological conditions e.g., passing clouds can temporaril'reduce the solar plant=s output< monsoon rainfall can also reduce the solar plant=s

output. Therefore, solar power for critical e4uipment should (e used incon>unction with another source of power.

%aylig&t #ower – Solar power is onl' availa(le when the sun shines. Therefore,night time applications will re4uire other sources of power, or need to plan for (igger grid connected solar plant with 2et ;etering.

$nverter weig&t – The 7+ power output from the solar panels needs to (econverted to !+ via an inverter which can (e ver' heav' a ** $W inverter willweigh a(out ,*** Kgs (ut occup' onl' a few s4uare feet of space. 5f the

construction cannot support this weight the inverter ma' need to (e placed on the








ground floor, with appropriate ca(les chosen to compensate for energ' loss.

'ind Factor – !s Telangana is not a c'clone prone area the mounting structuresdo not need to have a high wind speed rating. Under ** $ph rating should (esufficient, su(>ect to spite specific conditions.

(ur Recommendation for Roofto# Solar in Hyderabad

@ased on the a(ove discussion, Kleancell Technologies recommendation for solar

plants in Telangana is

Multi#le #ower source integration – !s the output from a rooftop solar plantvaries, it must alwa's wor$ in con>unction with other sources of power, t'picall'utilit' grid power and diesel power. This is achieved using

Hybrid inverter – ! rooftop solar AB s'stem that utiliCes a h'(rid inverter allowsthe solar plant to integrate with a diesel generator in addition to the utilit' grid.The solar plant serves to reduce diesel (ills (' supporting part of the overall load.

5ntegrating a rooftop solar plant with a diesel generator involves severalchallenges that need to (e overcome with careful design and siCing of the solar plant.

(R@ased on the annual consumption need to assess the siCe with 2et ;eteringfacilit'.

Cost of a Roofto# Solar PlantThe cost of a rooftop solar plant is discussed in detail once the re4uirement %

!nnual consumption concluded, and returns from su(stituting diesel with solar can (e evaluated. !s a rule of thum(, a $W solar plant that generates # $Wh of solar power per da' 8on average9 will cost !ppro:imatel' Rs. la$h 8e:cluding(atteries9.









Dor Durther +larifications 0R 7iscussions feel Dree to

+!EE US 02 FG /*G)//*G

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Write to us at $leancelltechnologiesHgmail.com





rooftop solar – telangana.docx

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