According to the company, the new Renew Collection has been designed in order to reduce energy consumption by two-thirds in comparison to an average home, and the remaining one-third can be powered with renewable energy, making yearly energy use net-zero.

Commenting on the sustainable and energy efficient homes, Deltec Homes president Steve Linton said that building to this degree of efficiency requires a lot of research.

"We’ve taken the most aggressive energy efficient options that we offer in our Deltec homes and made them standard for the Renew Collection.

"For instance, they’ll all be air-tight, offer opportunity for passive solar and have insulation values more than double code requirements," added Linton.

Deltec Homes noted that it has developed the six-home collection, which comprises three circular designs, in response to the increasing consumer demand for net-zero homes.