“Solar RESOURCE MAPPING TECHNIQUES”

1. MINISTRY OF NEW AND RENEWABLE ENERGY CENTRE FOR WIND ENERGY TECHNOLOGY “Solar RESOURCE MAPPING TECHNIQUES” Dr. G. Giridhar Solar Radiation Resource Assessment “ASEAN – India Workshop on Cooperation in Renewable Energy” 6th November, 2012, Vigyan Bhawan, New Delhi

2. Solar Energy-JNNSM • MNRE, GOI initiated JNNSM in 2009-10 to establish India as a global leader in Solar Energy. • Global effort to meet the challenges of climate change. • Create conditions indigenous solar manufacturing capability. • Promote grid/decentralized power applications. • Technology innovations, R&D, cost reduction, grid parity. • Mapping of ground solar insolation

3. Implementation of JNNSM

4. Why Measurements…? • Ground measured data is more accurate. • Quantification of the ground data. • A combination of measured and satellite data helps in better understanding solar potential areas . • In preparation of accurate and reliable SOLMAPS • Design & Performance Parameters • To determine the bankability of the proposals

5. Availability Solar Radiation Data • “Solar Radiation over India” by A Mani, IMD • “Handbook of Solar Radiation” by A Mani and S.Rangarajan, IMD • “Solar Radiant Energy over India (2009)” by Ministry of New and Renewable Energy ,GOI. • SEC-NREL • NASA • METEONORM • SOLEMI

6. SRRA Objectives • To assess and quantify the ground data of solar radiation • To establish Calibration Laboratory for solar radiation measuring equipments at C-WET, Chennai. • Data processing , modeling and making of Solar Maps

7. SRRA Implementation • In 2011 under JNNSM, SRRA Program was fully financed by Ministry and implemented by C-WET, Chennai . • An exclusive Solar Radiation Resource Assessment unit has been established at C-WET. • All 51 SRRA Stations in 10 States and 1 Union Territory was completed and commissioned between March to October, 2011. • Data from all SRRA stations are transmitted through GPRS to Central Receiving Station established at C-WET.

8. Site Selection criteria • Area • Free horizon • Strong network connectivity • Safety & Security • Electromagnetic interference • Easy accessibility to site

9. State wise SRRA stations Phase I & II

10. Continued……

11. SRRA STATIONS PHASE-I & II

12. Normal Incidence Pyrheliometerfrom Eppley Laboratory, USA

13. Precision Pyranometerfrom Eppley Laboratory, USA

14. Sun Tracker from Geonica , Spain

15. Tipping Bucket Rain Gauge from R M Young, USA

16. Ultrasonic Anemometerfrom R M Young, USA

17. Temperature and Humidity Sensor from R M Young, USA

18. Barometric Pressure Sensor from R M Young, USA

19. Supporting Instruments

20. Typical SRRA station

21. Data collection & QC For solar radiation parameters, the applied quality control is based on Baseline Surface Radiation Network (BSRN) standards of World Meteorological Organisation (WMO), and Management and Exploitation of Solar Resource Knowledge (MESOR)

22. Establishment of Calibration Laboratory • A Calibration Laboratory has been established at C-WET. • Two numbers of Absolute Cavity Radiometer, four numbers of Standard Precision Pyranometer and Solar Trackers are available.

23. Training Program • 3 Days Training Programme on “Functioning and Maintenance of ASRMS” for station in-charge from 10th to 12th October 2011 at C-WET, Chennai. • 1 Day training program conducted on the O & M aspects the SRRA for all the station in-charge of Rajasthan and Haryana, at IIT Jodhpur on 28th January 2012. • 1 Day training program on the “Functioning and Maintenance of SRRA station” for all the station in-charge of Gujarat, Madhya Pradesh, Chhattisgarh, Maharashtra(Pandharpur) and Jammu & Kashmir(Leh) organised at PDPU, Gandhi Nagar on26th April 2012.

24. Institutional collaboration • Under Indo German Collaboration with GIZ, Germany for data processing, quality assessment and developing solar maps of India. • Satellite data from Space Application Centre, ISRO, Ahmedabad for the preparation of solar maps of India.

25. Users of SRRA Data • High quality solar radiation data for solar developers for bankable propositions, design and performance parameters. • Satellite Data Providers for Ground truthing. • Academic/Researcher/Policy Makers/Consultants. • Calibration of Solar Sensors

26. Availability of SRRA Data • Previous Month Average Data for all stations are available on C-WET Web Site (interactive map) • Quality Controlled ASCII data and report in PDF format (Daily, Monthly and Yearly) are available on payment basis. • SRRA data would be sold either through CD /e-mail.

27. Solar Data Policy 2012 • MNRE sole and exclusive owner of data • Only quality controlled data will be sold • C-WET is authorised to sell data • Data for more than 5 sites (bulk Buyer) at a time - requires Ministry’s approval • Publication of data- requires specific MNRE/C-WET permission • Special approval from MNRE is required for supply data to foreign nationals. • Details of pricing is available on www.cwet.res.in

28. Details of Data Reports

29. issues….. Maximum outages have been observed with the damage to the transducer of ultrasonic wind sensor.

30. Bird damaged transducers of ultrasonic anemometer. One of the damaged transducers of ultrasonic anemometer. This happened despite having modified bird guards (spikes) New model of Wind Sensor being adopted to avoid damages by birds

31. Future Plan • Setting up of 60 more SRRA stations • Calibration of Solar sensors. • Aerosol measurements at 4 SRRA stations. • Up gradation and integration of 45 IMD solar radiation measuring stations. • Consultancy projects .

32. Consultancy Projects • SRRA has received request from private developers to install Solar Monitoring Station and collect data and prepare DPR on consultancy basis. • The detailed list of request from plant developers are as follows:

33. Thank you