We have about twenty units (and growing rapidly) installed and working. The first owners of our SunPumps have been very satisfied and are generally extremely enthusiastic about our product. Many have been so helpful as to allow us regularly test their systems in order to ensure impeccable performance and quality control for future customers. We believe that a tipping point has been reached in the public consciousness, whereby people actively want to choose renewable sources of energy, so long as it is affordable and efficient. The overwhelmingly positive reaction of our existing customers has reinforced this belief. You can read more about some of the homes that have chosen SunPump here.