Community-scale assessment of rooftop-mounted solar energy potential with meteorological, atlas, and GIS data: a case study of Guelph, Ontario (Canada)

Table 4 Comparison of rooftop-mounted solar energy potential with estimate of Guelph’s 2005 energy use

Demand (GWh_[e]) and relative potential for Guelph, 2005	City of Guelph	Manufacturer and model
Demand (GWh_[e]) and relative potential for Guelph, 2005		SunPower E19/320	Vaillant VFK 150
Total energy	6,034^a
First scenario - horizontal plane assumption
Interactive maps of Canada (%)		28.3	101.5
mL&J real sky B + D (%)		24.8	88.8
Second scenario - roof categorization assumption
mL&J real sky B + D (A and B) (%)		49.0	175.4
Heat	2,661^a
First scenario
National Atlas of Canada (%)		N/A	230
mL&J real sky B + D (%)		N/A	201
Second scenario
mL&J real sky B + D (A and B)		N/A	398
Electricity	1,630^a
First scenario
National Atlas of Canada (%)		104.9	N/A
mL&J real sky B + D (%)		91.8	N/A
Second scenario
mL&J real sky B + D (A and B) (%)		181.3	N/A

^aGarforth International LLC[27]; (A) and (B) refer to the rooftop categorizations; N/A, not applicable.

ISSN: 2192-0567