The traditional police powers of government are health, safety, welfare and morals.
This means that the state might see fit to intercede through laws by limiting your activity if there is an unseen danger in what you do that could have a significant effect on another individual; thus jeopardizing that individual's right to life, liberty or the pursuit of happiness in a tangible way.
For instance; health inspections have increased cleanliness, cutting down on diseases that could severely impact your health. Safety inspections ensure that unseen dangers, like in electrical wiring or gas hook-ups, are minimized. Welfare typically refers to some sort of fraud - it is why we inspect bank records. Morals normally refer to activity, perhaps that concerning drugs or alcohol.
Strangely, the state is wanting to add energy efficiency to it's police powers. HB2318 changes Tennessee code 68-120-101, the law on statewide building construction safety standards, to include energy efficiency.
It is one thing for the state to take precautions because something may seriously jeopardize your health, or safety, or all that you have worked to earn, or to keep you from being a danger to others when you are under the influence of drugs or alcohol, but to police energy efficiency?
People already have an incentive to build energy efficient homes or to purchase energy efficient appliances - its called a utility bill.
For the state to get involved and create mandates is for the state to become involved in political decisions that favor some parts and supplies over others; certain businesses over other businesses; certain policies and political philosophies other others.
People naturally balance what they can afford with what they will save and examine the margins to see how far they want to go. Mandating politics is not good policy - and it moves us further still from freedom.