ATP and ADP
ATP is a charged molecule which can provide energy for all the processes involved in life. ADP is uncharged and can be turned back into ATP.
Burn
Energy is generated by burning ATP into ADP, then distributed by suppliers and poles to the structures that need power.
Suppliers and poles
Energy suppliers burn ATP into ADP and distribute energy to nearby intracellular buildings. Energy poles extend the range between suppliers.
Mitochondrial energy
Electron transport chains oxidize NADH into NAD, consume oxygen, and can charge nearby ATP synthases or power decouplers to produce heat.