date-created: '2010-08-26'
date-updated: '2026-01-09'
manifest-author:
    name: Appropedia
    email: admin@appropedia.org
title: 'An open source simulation of photovoltaic yield with r.sun over large regions'
description: 'This is an investigation of the capacity and capabilities of the module r.sun, one of the utilities of the Geographical Resources Analysis Support System (GRASS). Using Southeastern Ontario as case study, insolation, including temporal and spatial variation of albedo, was computed to output reliable solar energy for large scale solar PV farm development in the region. Full text of study available here: H.T. Nguyen and J.M. Pearce, "Estimating Potential Photovoltaic Yield with r.sun and the Open Source Geographical Resources Analysis Support System" Solar Energy 84, pp. 831-843, 2010.'
keywords:
    - 'Open source software'
    - Photovoltaics
    - 'QAS completed projects and publications'
    - GIS
project-link: 'https://www.appropedia.org/An_open_source_simulation_of_photovoltaic_yield_with_r.sun_over_large_regions'
contact:
    name: 'User:J.M.Pearce'
    social:
        platform: Appropedia
        user-handle: 'User:J.M.Pearce'
version: 44
made: false
image: 'https://www.appropedia.org/w/images/1/13/Daily_insolation_per_unit_area_in_Southeastern_Ontario.jpg'
license:
    documentation: CC-BY-SA-3.0
licensor:
    name: 'User:J.M.Pearce'
    affliation: 'Queen-s University'
    contact: 'https://www.appropedia.org/User:J.M.Pearce'
documentation-home: 'https://www.appropedia.org/An_open_source_simulation_of_photovoltaic_yield_with_r.sun_over_large_regions'
documentation-language: en