Haven't played through a full game yet. Here is my feedback.
This game shows potential.
Needs a save mechanism. Write the variables to a JSON string, base64 encode, and store in sessionstate. (Or any other method of accomplishing the same thing). Once you add save, it is easy to add importing / exporting saves as well.
Power is basically pointless as-is. Either remove power as a separate cost (build it into the income) or add a little depth by having players manage power like we do cooling. Make upgrading transformers cost money, but still keep the energy maintenance costs intact.
If you want to add more depth, have different transformers we can choose from. Some have higher capacity, some make the cost per watt cheaper.
Oh, and cooling should in my opinion cost power.
