So there was an update that changed the Energy tank upgrade card prices, to the point where it is 500k for 500 energy.
That price and amount of energy is a fantastic amount, I feel that everyone's maximum energy amount should be scaled to this price change. Some will be hit hard, some will be hit less, but in the end I won't have 25530 energy and mood totally liberating me from all sources of food, drink, and pressure to do much of anything. While most higher level glitchen have an average of 4000-10000 energy, it would be nice to know if this is intentional or not, if it's being scaled, etc.