• Approach / Methodology:
  • The detailed methodology of computation of daily total insolation is available in following references:

  • Bhattacharya, B. K., Padmanabhan, N., Sazid, Md., Ramakrishnan, R. and Parihar, J. S., Assessing solar energy potential over India using diurnal remote sensing observations from Indian geostationary satellite. Int. J. Remote Sensing, 2013, 34(20), 7069?7090. DOI: 10.1080/01431161.2013.811311

  • Vyas, S. S., Bhattacharya, B. K. and Nigam R., Assured solar energy hot-spots over Indian landmass detected through remote sensing observations from Geostationary Meteorological Satellite. Current Science, 2016, 111(5), 836-842. DOI: 10.18520/cs/v111/i5/836-842

  • The approach and assumptions adopted for computation of Peak Solar Power output is provided below:

  • Built-up Area of cities is obtained from legacy projects of ISRO and corresponds to the scale of 1:50,000 and 1:250,000.
  • It is assumed that 25% of built-up area is covered by building roofs and further 25% of this total roof area is suitable for Photo Voltaic installations.
  • Total solar energy input on suitable roof area is assumed as product of suitable roof area and global horizontal irradiance.
  • The available Peak Power Generation Potential is assumed as ratio of total average available energy per year to 8760 hours (assuming 365 days in a year).
  • Total solar energy output and peak solar power output on suitable roof areas is estimated by assuming 15% efficiency of solar PV module.

  • Data used:
  • Instantaneous insolation was generated using spectrally integrated radiative transfer scheme and three-layer cloudy-sky model with cloud-top albedo, temperature, atmospheric water vapour from VIS, thermal IR and WV bands13 and ancillary global data (eight-day aerosol, ozone). The data acquired by following satellites is used:
  • Kalpana-1 VHRR data (Half-Hourly Acquisitions)
  • INSAT 3D (30 minutes Acquisition) and
  • INSAT 3DR (15 minutes Acquisition)

  • The data is available through Meteorological and Oceanographic Satellite Data Archival Centre (MOSDAC) (http://www.mosdac.gov.in).

  • Disclaimer:
  • While all efforts have been made to ensure the correctness, accuracy and currency of this report, the same should not be construed as a statement of law or be used for any legal purpose. The aforementioned data are intended for information only. VEDAS makes no guarantee, claims or promises about accuracy, timeliness or completeness of information. The data have not been independently verified.

  • Under no circumstances, VEDAS, Space Applications Centre (SAC) and Indian Space Research Organisation (ISRO) shall be liable for any direct, incidental, consequential, indirect or punitive damages arising or alleged to have arisen out of use of this report.

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