...or to be precise, is the decline in manufacturing cost of solar finally overtaking monetary inflation?
Solarbuzz seems cautiously optimistic:
In terms of the US market, stability in the index has been evident since reaching a peak. However, this month there has been a small drop of one cent per watt. This is the first drop in the US index since May 2004. Within this data, it should be noted that some product lines are still showing net increases in retail price.
After the significant drop in the European index in February 2007, this index has recorded little movement since that time. The European index does not carry as wide a market representation in the survey as the US retailers.
The one thing Solarbuzz has learnt over the past 7 years is that characterizing the "real" market movements requires analysis by a wide range of research approaches. Over the short term (i.e. 3 months or less), the online survey results often accord with independent research, but sometimes they do not. Of course, one of the checks on module prices is also what is happening at what the industry calls "the factory gate" - this is the price charged by module manufacturers at their first point of sale.
So, where does this leave the current big picture? In Europe, there has been clearer evidence of price declines from the May 2004 peak. In the US market, one month result is not enough to conclude any other than the fact that US retail pricing overall is still stable near its current peak. Certainly, it would still be premature to conclude that the US index will not yet reach a level higher than that first achieved in November. At the same time, the November result may represent the peak. It is going the depend on the weighting of individual product lines in the overall result, given the diversity of price direction by company line at the present time.
http://www.solarbuzz.com/Moduleprices.htmAnd for those looking for the bargains:
http://www.ecobusinesslinks.com/solar_panels.htm