DCM, Thanks. Looks like they will be a few thousand cheaper than Echo. Great PR for them that FEDEX and Coca Cola are trying them. I agree on the installation time. 4-6 hours or 7-8 really does not matter. Happy to see that Echo is seen by the NTEA as a greener system - Echo won the award two years in a row. Appreciate you sharing your knowledge. Good chance we spoke at the NTEA Show and did not realize it. Please share information as you can.