ASSESSMENT OF ROOFTOP RAINWATER HARVESTING AND SOLAR POWER POTENTIAL OF UNIVERSITY CAMPUS IN HIMACHAL PRADESH
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Date
2023-11-09
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UHF Nauni
Abstract
The present investigation entitled “Assessment of rooftop rainwater harvesting and
solar power potential of university campus in Himachal Pradesh” was conducted during
2022-2023 in the Department of Environmental Science, College of Forestry, Dr. Y.S Parmar
University of Horticulture and Forestry, Nauni, Solan, H.P. A total of 151 buildings in the
campus were digitized using GIS techniques having a total rooftop area of 38,318 square
meters. The results were validated for errors in digitization by manual ground truth
measurement. The verification of the digitized area with the manually obtained area of
rooftops showed an accuracy of 99 percent, whereas with the data provided by the Estate
Office showed an accuracy of 97 percent. It was found that the university campus has a
rooftop rainwater harvesting potential of 42,919.24 cubic meters which could cater to about
76 percent of the water demand of the campus. In order to assess the rooftop solar power
potential of the university campus, the Digital Elevation Model (DEM) map of the university
campus was prepared using the satellite data obtained by Shuttle Radar Topography Mission
(SRTM) and was interpolated to 5 m resolution for further analysis. The total South-facing
area covered by building rooftops was found to be 20,261.4 square meters. The total rooftop
solar power potential was found to be 2026.1 kW per day. The annual rooftop photovoltaic
panel installation of the capacity of 2269 MWh can be recommended which can fulfil about
99.59 percent electricity demand of the campus serving as a crucial investment towards
sustainable energy.
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ASSESSMENT OF ROOFTOP RAINWATER HARVESTING AND SOLAR POWER POTENTIAL OF UNIVERSITY CAMPUS IN HIMACHAL PRADESH