2014 05 12: the pilings and some of the support structure for the photovoltaics are in. as a rule it is better to put the photovoltaics on the roof. this is less expensive because it does not require an additional structure and it does not require trenching to get the wires to the house. i had planned to put the photovoltaics over the basement from the old house; but, this turned out to be impractical. meanwhile, the new house was designed so that the photovoltaics would not be a good match on its roof. so, the photovoltaics will go on a structure in the front yard.