I would say so because energy efficient buildings would benefit the occupants in terms of reducing energy consumption and electricity cost. Also, the construction of such building is critical since it controls leakages and ensures good orientation with enough natural lighting/ventilation. It's important to consider the thermal envelope and the glazing of windows (double/triple) as well to optimize the use of energy.

Yes it is. These are also called Smart Buildings, and focus in design on having optimum natural lighting and heating, that are necessary for optimum Human activity.

An energy efficient building should be designed and built with the occupant in mind. Of course there are designers that would under-size HVAC systems or shave energy savings in ways that are not intended to benefit the occupants, if their priorities are ultimately to reduce energy consumption. However, an energy efficient design should be one that utilizes passive heating, cooling, lighting and ventilation techniques- and supplements them mechanically to properly serve the building for its intended use and for the occupants to be comfortable.

When energy efficiency is a criteria for design, other factors tend to sneak their way into the design that can seriously benefit the occupants, including sustainably-sourced materials, low-VOC materials, improved indoor air quality, etc. There are various opportunities for this type of design early on in the design phase that should be utilized from the get-go (LEED, Green Point Rated, Energy Star Certifications, for example).

For energy retrofits, deep energy savings by switching old gas appliances out for high efficiency heat pumps (350% efficient) are improving the energy bills, safety, and indoor air quality by removing natural gas from the building.

As for lighting, the science is proving that compact fluorescent lights are harmful to the human eye, since it creates an unnatural blue light throughout the day and night, when our eyes have evolved to need the deep red spectrum at night time (e.g. natural fire and sunlight). So, LED's do have a wider spectrum that could help our eyes stay healthy with the unnatural lighting at nighttime, but ultimately for eye health, incandescent lamps are the way to go. This is undermining the work that I have done for the past 7 years, promoting swapping these incandescents out for CFL's, so there needs to be a balance with optimizing energy efficiency, human comfort, and overall health and safety.