A survey of installers in both countries has identified non-hardware ‘soft costs‘ as the main factor responsible for a price difference of US$3.19/W between the two countries with the average German system costing $3/W compared to $6.19/W in the U.S., according to the study (actual costs are lower).
The report found several explanations for the disparity including the more densely concentrated populous in Germany which reduces transport and supply chain costs as well as the importance of word of mouth recommendations in a country where solar is culturally accepted.
The more wary nature of American consumers to a technology less widely adopted across The Pond means U.S. installers incur significantly higher customer acquisition costs.
The study found German installers have marketing and advertising costs of just $0.02/W installed, $0.01 for customer acquisition system design and $0.04 for ‘other' customer acquisition costs, compared to marketing spend of $0.34; system design costs of $0.11; and other customer expenses of $0.24 in the U.S.
The size of the market enables German installers to benefit from learning cost reductions with 3.6 times more cumulative residential solar installations in Germany than in the U.S. a figure which rises to a factor of 14 on a per capita basis.
Another of the report's findings was that regular downward adjustments of German solar incentives kept pressure on installers to keep prices down.
The results of the study will be presented in a webinar hosted by the U.S. Department of Energy's SunShot initiative on February 26, when the report's authors will call for U.S. policies to encourage a larger, less fragmented, solar market; a simple national solar incentive scheme, which would be regularly adjusted down; and lower interconnection, permitting and inspection costs.
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