I dont even know what a Skypak is but I feel obliged to contribute. The pursuit of green, just for the sake of being green, can end up costing the customer / end user big $$. As an example I live in a 35 year old house with a 20 year old mid efficiency 80% gas furnace. My annual heating bill is around $1000, with only 50% of that being the cost of gas., the other $500 being fixed distribution costs etc etc.
If I were to change out to a high efficiency 92% furnace it might cost me about $5000 I think. Any engineer can easily compute the annual savings and / or the number of years required to recover my initial up front cost but the average guy on the street doesnt have this mathematical ability and is constantly being told to go green , go high efficiency, save the environment. At what cost to the individual or society??