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Brighton Webs Ltd. statistical and data services for industry |
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The Solar Bucket - Results This page summarises the data collected by the Solar Bucket, it's subject to revision as data and understanding(?) evolve.
A south facing 4.8 watt amorphous silicon panel is mounted on the end of a pole close to the roof on which a full size installation might be installed. Both the panel and the roof are in shadow until around 09:00 GMT. The energy captured by the panel is used to charge a lead acid battery, this is discharged overnight and readings of the stabilised voltage taken at the start and end of most days. Follow the link for more information.
Where is it being measured The panel is located in Brighton on the South coast of England. The latitude is approximately 50.8 degrees north. Data for solar observations is location specific. The yield is a function of latitude (Sun-Earth geometry) and prevailing weather (cloud and precipitation) and both these factors need to be taken into account when analyzing the data.
Annual Yield At the time of writing a full year's data is not available, however, by using summer and autumn data, it is possible to make estimates for winter and spring, as data becomes available the numbers will be revised. The results show both the seasonal variation in the yield, the yield in winter being approximately one third of the summer value and the variation in weather. August 2008 was a drab month with the sky full of low cloud most days and this is reflected in the yield.
Reality Check The estimated annual yield as approximately 3.3 kwh which is roughly 0.7 kwh/per rated watt. Thus a 1 kw array of panels might be expected to produce 700 kwh/year. This value is consistent with the 800 kwh/installed kw value quoted by other sources. Page Updated: 08-Mar-09 |
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For more information: info@brighton-webs.co.uk |
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What
is being measured
