Now sky-high communal prices will be at least somehow justified
Just the opposite. Electricity, in principle, is inexpensive, and those who live in high-rise buildings and (or) use an electric stove, they generally pay a penny for it. The main expenses in utility bills are hot water and heating, and if you stir up your own farm in the apartment, then the need for heating and hot water will disappear.
you can also heat the neighbors, and if you put the matter on a grand scale, then the entire staircase is 25 floors. I believe that the farm, located on the floor will allow heating the whole house