Author Topic: EEVblog #743 – Solar Roadways Test Results  (Read 46328 times)

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Offline SeanB

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Re: EEVblog #743 – Solar Roadways Test Results
« Reply #125 on: April 17, 2017, 01:54:46 pm »
Well, the results are out as to the ROI on the solar roadway test article. Generated pretty poor power, and absolutely no mention of the power consumed in that period in the heaters, LED "welcome to blinky" displays and in the cabinet as inefficiency, but hey, it did make 10c per day, on a good day.

Thunderfoot follows....



 

Offline LabSpokane

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Re: EEVblog #743 – Solar Roadways Test Results
« Reply #126 on: April 17, 2017, 02:12:21 pm »
Well, the results are out as to the ROI on the solar roadway test article. Generated pretty poor power, and absolutely no mention of the power consumed in that period in the heaters, LED "welcome to blinky" displays and in the cabinet as inefficiency, but hey, it did make 10c per day, on a good day.

Thunderfoot follows....


And again, the critics use math and science as bad as what was used to justify the solar roadway.  This guy is just wrong.  1kW of solar panels does not generate 1kW of power from sunup to sundown.  :palm:

This is a 30 year average of what can be expected in Spokane, WA (nearest PVWatt datapoint) for yesterday, 16 April.  Please note the graph of output is not a step function. 

The total expected output on this (sum under the curve with 1hr binning) is about 4.3kW-h for a 1320W system at 0 deg tilt.  The best I've seen out of SolarRoadways thus far for April is 1.1kW-h.  So, with more data, we're seeing SR generating about 25% the power that it should be if properly sited and designed. 


« Last Edit: April 17, 2017, 06:00:17 pm by LabSpokane »
 


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