| 2009 PRINCE GEORGE, BC SOLAR HOT WATER HEATING Apricus AP30 evacuated tube SDHW collector |
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| Sun Data | Water Heating | |||||
| 2009 | Monthly Peak Sun Hours |
Daily Peak Sun Hours |
Electric Backup Kwh |
Solar Heater Kwh |
Solar % of Total |
Notes |
| Jan | 43 | 1.4 | 16 | 54 | - | wood stove contribution not measured |
| Feb | 78 | 2.5 | 3 | 165 | - | wood stove contribution not measured |
| Mar | 114 | 3.7 | 9 | 368 | - | wood stove contribution not measured |
| Apr | 144 | 4.6 | 17 | 529 | 96.9% | |
| May | 151 | 4.9 | 34 | 764 | 95.8% | |
| Jun | 215 | 6.9 | 24 | 330 | 93.2% | data error due to water leak |
| Jul | 209 | 6.7 | 6 | 526 | 98.9% | |
| Aug | 171 | 5.5 | 18 | 438 | 96.0% | |
| Sep | 129 | 4.2 | 31 | 262 | 89.4% | |
| Oct | 86 | 2.8 | 55 | 236 | 81.2% | 2nd collector added on 2009 10 12 |
| Nov | 43 | 1.4 | no data | 176 | - | measurement error |
| Dec | 34 | 1.1 | no data | 80 | - | measurement error |
| 2009 Seasonal Average Peak Sun Hours | ||||||
| Season | Monthly | Daily | One peak sun hour is equivalent to 1000 watts per square meter of solar radiation for 1 hour. The equivalent peak sun hours were calculated from the production of a solar array near Prince George. Although not measured with a scientific instrument, this data compares favorably with the NASA averages published on their web site. | |||
| Spring (Mar, Apr, May) | 136 | 4.5 | ||||
| Summer (Jun, Jul, Aug) | 198 | 6.6 | ||||
| Autumn (Sep, Oct, Nov) | 86 | 2.9 | ||||
| Winter (Dec, Jan, Feb) | 155 | 5.2 | ||||
| Annual Average | 144 | 4.8 | ||||