As part of a huge roofing company, GAF Energy says its customer-acquisition costs are lower than the industry’s average, giving it an advantage.

GAF Energy, the solar roof company owned by global roofing manufacturer Standard Industries, says its contractors have deployed “hundreds” of installations since its January launch, suggesting it may be outpacing larger rival Tesla.

While much of the attention around solar roofs has focused on Tesla, GAF Energy has been quietly deploying its solar roofing systems. Though the company declined to provide specific deployment numbers, GAF Energy’s estimate of “hundreds” of roofs deployed would appear to put it well in front of its highest-profile competitor.