How could new-build homes be improved to encourage more renewable energy use?

Newly built homes can and do have the ability to be directly connected with the electrical grid therefore making every household owner also part of energy bool buyer/seller.

A private or multi-owned house mainly have solar panels on the rooftops that provide for cold water heating and normal heating during winter season. It can also provide some part of electrical power for charging supplies, but very little of it, due to small capacity batteries, that are very expensive.

If the house is further away from the city, it can have its own wind mill and generate its own electricity, presumably sell it back to the grid to make up the building costs. It has to be further away because of the sound that the generator makes when the rotor spins generating electricity.