Solar Irradiation Data

Ministry of New and Renewable Energy (MNRE) has initiated a major project on Solar Radiation Resource Assessment (SRRA) across the nation to assess and quantify the solar radiation availability along with weather parameters with a view to develop Solar Atlas. Centre for Wind Energy Technology (C-WET), Chennai is implementing the project by installing a network of 51 Automatic Solar Radiation Monitoring Stations (ASRMS) in the first phase in different States using high quality, high resolution equipment/instruments.

Each ASRMS consists of two towers of 1.5 m and 6 m tall each. The 1.5 m tall tower houses a Solar Tracker equipped with Pyranometer, Pyranometer with Shaded Ring and Pyrheliometer to measure solar parameters, such as, global, diffused and direct radiation. The 6 m tall tower houses instruments measuring rainfall, ambient temperature, atmospheric pressure, relative humidity, wind speed and direction. Each ASRMS is totally powered by 160 Watt SPV Panels and consists of 13 equipments/instruments and records 37 parameters inclusive of both measured and derived. The data from each ASRMS averaged to 10 minutes will be transmitted to a Central Receiving Station established at C-WET, Chennai through GPRS mode. The implementation of the project has started from February 2011 and all stations have already been installed, completed and commissioned. The monthly average (daily) wise data received from each ASRMS is available on C-WET website as test run. The quality checking process of the data is on.

To calculate or to find the data arrived by C WET starting from May to Oct for 2011 and you will results as given below.

#	States	No. of ASRMS
#	States	Proposed	Completed
1	Rajasthan	12	12
2	Gujarat	11	11
3	Tamil Nadu	7	7
4	Andhra Pradesh	6	6
5	Karnataka	5	5
6	Maharashtra	3	3
7	Madhya Pradesh	3	3
8	Jammu & Kashmir	1	1
9	Chhattisgarh	1	1
10	Pondicherry	1	1
11	Haryana	1	1
Total		51	51

Monthly Average Values (October 2011)

#	Station	State	Date of Commissioning	Global Horizontal Solar Radiation	Diffuse Horizontal Solar Radiation	Direct Normal Solar Radiation	Wind Speed	Wind Direction	Rain Accumulation	Air Temperature	Relative Humidity	Atmospheric Pressure (Station-Level)
#	Station	State	Date of Commissioning	(Kwh/m2)	(Kwh/m2)	(Kwh/m2)	(m/s)	(°)	(mm)	(°)	(%)	(mb)
1	Karakudi	Tamil Nadu	23-05-11	4.752	2.592	2.880	2.568	139.385	215.500	27.192	81.001	995.731
2	CWET	Tamil Nadu	28-05-11	4.464	2.448	2.592	3.587	192.669	168.100	28.121	85.055	1006.914
3	Ramanathpuram	Tamil Nadu	03-06-11	4.320	2.448	2.592	4.713	199.639	281.500	27.765	80.095	1004.731
4	Kayathar	Tamil Nadu	10-06-11	4.896	2.160	3.168	4.285	200.660	374.101	27.835	73.526	996.31
5	Trichy	Tamil Nadu	29-07-11	4.752	2.592	2.736	5.025	185.788	135.900	17.781	67.810	997.158
6	Erode	Tamil Nadu	03-08-11	5.040	2.592	2.880	3.125	183.653	176.800	26.962	74.975	976.345

Solar Irradiation Data of Cities in Tamil Nadu

Location	Jan	Feb	Mar	Apr	May	Jun	July	Aug	Sep	Sep	Oct	Nov	Dec	Avg
Ambattur	4.89	5.83	6.56	6.61	6.00	5.12	4.63	4.71	4.94	4.94	4.37	4.02	4.21	5.16
Avadi	4.89	5.83	6.56	6.61	6.00	5.12	4.63	4.71	4.94	4.94	4.37	4.02	4.21	5.16
Chennai	4.89	5.83	6.56	6.61	6.00	5.12	4.63	4.71	4.94	4.94	4.37	4.02	4.21	5.16
Madurai	4.62	5.44	6.10	5.60	5.59	5.08	4.89	5.07	5.25	5.25	4.55	4.08	4.14	5.03
Pondy	4.65	5.59	6.29	6.04	5.76	5.21	4.85	5.01	5.22	5.22	4.32	3.86	4.06	5.07
Salem	4.84	5.76	6.41	6.06	5.87	5.10	4.70	4.87	5.15	5.15	4.47	4.05	4.25	5.13
Teni	4.84	5.68	6.28	5.68	5.54	4.52	4.32	4.66	5.05	5.05	4.33	4.04	4.24	4.93
Thanjavur	4.60	5.58	6.30	5.88	5.66	5.30	5.06	5.23	5.42	5.42	4.46	3.89	4.06	5.12
Trichy	4.70	5.68	6.39	5.85	5.70	5.18	4.92	5.08	5.32	5.32	4.53	4.05	4.18	5.13
Tirunelveli	4.79	5.52	6.06	5.44	5.22	4.38	4.45	4.79	5.06	5.06	4.37	3.93	4.19	4.85
Tiruppur	5.03	5.78	6.42	5.99	5.74	4.75	4.41	4.56	4.92	4.92	4.40	4.18	4.42	5.05
Tuticorin	4.94	5.85	6.59	6.17	5.85	5.47	5.53	5.75	5.92	5.92	5.12	4.26	4.37	5.49

Solar irradiation measured in Kwh/m2/day onto a horizontal surface

Chennai City Latitude and Longitude

#	Location	Latitude	Longitude
1	Adyar Bus Depot	12°59’50” N	80°15’25” E
2	Adyar Signal	13°00’23” N	80°15’27” E
3	Alandur	13°00’28” N	80°12’35” E
4	Ambattur	13°06’36” N	80°10’12” E
5	Anna Arch	13°04’28” N	80°13’06” E
6	Anna Nagar Roundana	13°05’04” N	80°13’05” E
7	Anna Nagar West Terminus	13°05’35” N	80°11’55” E
8	Anna Statue	13°04’05” N	80°16’19” E
9	Anna University Entrance	13°00’29” N	80°14’06” E
10	Avadi	13°07’13” N	80°06’36” E
11	AVM Studio	13°02’52” N	80°12’18” E
12	Ayyappa Temple	13°03’23” N	80°13’54” E
13	Basin Bridge	13°06’08” N	80°16’17” E
14	Chennai Airport	12°59’32” N	80°10’10” E
15	Chennai Central	13°04’56” N	80°16’32” E
16	Chennai Mofussil Bus Terminas (CMBT)	13°04’04” N	80°12’21” E
17	Chennai Trade Center	13°00’53” N	80°11’28” E
18	Chepaukam stadium	13°03’51” N	80°15’59” E
19	chetput	13°04’24” N	80°14’34” E
20	Chintadripet	13°04’18” N	80°16’26” E
21	Chintamani Signal	13°05’06” N	80°13’27” E
22	Chola	13°02’39” N	80°15’35” E
23	Church Park	13°03’14” N	80°15’16” E
24	CIPET	13°00’51” N	80°12’17” E
25	CIT Nagar Roundana	13°01’52” N	80°14’14” E
26	CLRI	13°00’28” N	80°14’33” E
27	DPI	13°04’05” N	80°14’55” E
28	Egmore Railway Station	13°04’40” N	80°15’42” E
29	Ethiraj College	13°03’49” N	80°15’26” E
30	Gemini Flyover	13°03’08” N	80°15’04” E
31	Greams Road	13°03’23” N	80°15’18” E
32	Guindy Race Course	13°00’17” N	80°13’01” E
33	Guindy Railway Station	13°00’30” N	80°12’45” E
34	HTL Colony	13°01’05” N	80°12’28” E
35	IIT Madras	13°00’19” N	80°14’31” E
36	Indra Nagar, Adyar	12°59’56” N	80°15’05” E
37	Isphani	13°03’18” N	80°14’59” E
38	Kamarajar Arangam	13°02’56” N	80°14’53” E
39	Kapaleeswarar Temple	13°03’10” N	80°16’24” E
40	Kasi Viswanathar Temple	13°02’10” N	80°13’29” E
41	Kasturiba Nagar, Adyar	13°00’12” N	80°14’52” E
42	Kathipara Junction	13°00’26” N	80°12’14” E
43	Kodampakkam	13°03’08” N	80°13’52” E
44	Korukkupet	13°07’02” N	80°16’40” E
45	Koyambedu Omni Bus Terminus	13°04’06” N	80°11’54” E
46	Koyambedu Super Market	13°04’03” N	80°11’38” E
47	Le Meridian	13°00’24” N	80°12’19” E
48	Light House	13°02’38” N	80°16’38” E
49	Loyolo College	13°03’49” N	80°14’05” E
50	Madhavaram	13°01’12” N	80°15’36” E
51	Madhya Kailash	13°00’23” N	80°14’49” E
52	Mambalam	13°02’20” N	80°13’43” E
53	Manali	13°09’05” N	80°15’01” E

#	Location	Latitude	Longitude
54	Minambakkam	12°59’05” N	80°10’40” E
55	MIOT Hospital	13°01’13” N	80°11’05” E
56	MMM Hospital	13°05’10” N	80°11’15” E
57	MRTS	12°58’02” N	80°13’12” E
58	Mugappair East Terminus	13°04’49” N	80°10’50” E
59	Mugappair West	13°04’55” N	80°10’13” E
60	Music Academy	13°02’45” N	80°15’34” E
61	Nandanam Signal	13°01’52” N	80°14’24” E
62	Nanganallur	12°59’30” N	80°11’48” E
63	Nehru Nagar, Adyar	13°00’08” N	80°15’06” E
64	Newaharlal Nehru Stadium	13°05’08” N	80°16’18” E
65	Nungampakkam Railway Station	13°03’54” N	80°13’57” E
66	Panagal Park	13°02’29” N	80°13’60” E
67	Park Sheraton Hotel	13°01’45” N	80°14’57” E
68	Parrys Bus Stand	13°05’14” N	80°17’02” E
69	Parthasarathy Temple	13°03’21” N	80°16’20” E
70	Pazhavanthangal	12°59’23” N	80°11’18” E
71	Perambur Loco Works	13°06’27” N	80°13’31” E
72	Planetarium	13°00’31” N	80°14’28” E
73	Poonamallee	13°02’33” N	80°06’03” E
74	Ramachandra Medical College & Hospital	13°02’13” N	80°08’55” E
75	Royapuram	13°06’16” N	80°17’31” E
76	Saidapet Bus Terminus	13°01’24” N	80°13’39” E
77	Saidapet Court	13°00’47” N	80°13’40” E
78	Shastri Bhavan	13°03’57” N	80°14’50” E
79	Sri Kothanda Ramaswamy Temple	13°02’04” N	80°13’30” E
80	St. Thomas Mount	13°00’20” N	80°11’35” E
81	Stella Maris	13°02’46” N	80°15’16” E
82	T. Nagar Bus Terminus	13°02’04” N	80°13’48” E
83	Taj Coromandal	13°03’29” N	80°14’49” E
84	Temple Tower	13°01’50” N	80°14’17” E
85	Teynampet Signal	13°02’22” N	80°14’48” E
86	Tharamani	12°59’02” N	80°14’50” E
87	The US Consulate	13°03’08” N	80°15’06” E
88	Thirumangalam Signal	13°05’10” N	80°11’55” E
89	Thiruvanmiyur	12°59’05” N	80°15’07” E
90	Thiruvanmiyur Bus Terminus	12°59’14” N	80°15’27” E
91	Thiruvanmiyur Junction	12°59’15” N	80°15’21” E
92	Tidel Park	12°59’22” N	80°14’52” E
93	Tiruvottiyur	13°09’36” N	80°17’23” E
94	Tondiarpet	13°07’36” N	80°16’56” E
95	Triplicane	13°03’51” N	80°16’20” E
96	Triplicane Railway Station	13°03’17” N	80°16’20” E
97	TVS Signal	13°06’05” N	80°11’41” E
98	Vadapalani Signal	13°02’56” N	80°12’43” E
99	Valluvar Kottam	13°03’16” N	80°14’30” E
100	Vani Mahal	13°02’41” N	80°14’25” E
101	Velachery Bus Terminus	12°58’33” N	80°13’15” E
102	Villivakkam	13°06’36” N	80°12’12” E
103	Vyasar Padi	13°06’33” N	80°15’45” E
104	Washermanpet	13°06’31” N	80°16’52” E
105	Woodlands Drive In	13°03’00” N	80°15’04” E

Solar Irradiation Data

Monthly Average Values (October 2011)

Solar Irradiation Data of Cities in Tamil Nadu

Chennai City Latitude and Longitude

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