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

Table 3 Summary of annual solar energy potential with community-scale arrays of PV or HW systems

	City of Guelph	Manufacturer and model
	City of Guelph	SunPower E19/320	Vaillant VFK 150
Footprint area
City footprint (km²)^a	86.72
Cumulative building footprint area (km²)^b	8.28
Commercial, industrial, and institutional (A)	3.17
Residential, agricultural, and park (B)	5.11
Characteristics
Rated efficiency^c		20.1%	60%
Balance-of-system efficiency		75%	90%
Per panel footprint (m²)		1.63	2.50
First scenario - horizontal plane assumption
Annual potential energy production (GWh_[e])
Interactive maps of Canada		1,709	6,120
mL&J real sky B + D		1,496	5,360
Number of panels
Horizontal (footprint multiplier: 1.00)		5,090,000	3,320,000
Second scenario - roof categorization assumption
Annual potential energy production (GWh_[e])
mL&J real sky B + D, horizontal (A)		573	2,050
mL&J real sky B + D, variable (B)		2,380	8,530
Total (A and B)		2,950	10,580
Number of panels
Horizontal (footprint multiplier: 1.00) (A)		1,946,000	1,269,000
Varied (footprint multiplier:1.89, averaged) (B)		5,910,000	3,860,000
Total (A and B)		7,860,000	5,120,000

(A) and (B) refer to the rooftop categorizations; ^aStatistics Canada[25]; ^bCity of Guelph[51, 53]; ^csee the ‘Solar PV system’ and ‘Solar HW system’ sections.

ISSN: 2192-0567