# Energy usage coefficient

Different cells consume different amounts of energy:

In Cell Lab this is set by their energy usage coefficient $P_0$ and the size of the cell. The energy available to the cell is directly proportional to its mass, with the exception of the Lipocyte that additionally has an energy reserve in the form of a lipid reserve. The total consumption of energy of a cell per hour is given by the formula:

$P=P_0\ 205.714\ (\ 1.07778 - c_{\text{salinity}}) r (\ 0.00375 + r)$

Where $r$ is the cell radius in mm and $c_{\text{salinity}}$ is the Substrate Salinity setting.