Recent content by John Crofford

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  1. J

    Solar roadways

    The estimates for electrical production that they are using only consider the peak 4 hours of production. If you are having serious traffic jams for a large part of the 10AM to 2PM period, then your city needs better-distributed lunch options. Their production estimates also include the fact...
  2. J

    Solar roadways

    In 2010, the payback period was estimated to be 22 years. Assuming that the cost of the solar cells themselves is the primary cost driver, that should be down well below the estimated life of the system as per kwh prices have gone from 21 cents to 11 cents. The estimate from 2010 was made...