Electric methods are being investigated as a possible means for monitoring the rection zone in an in situ coal gasification experiment. The model for the static electricity fields results in solving for the model electrical potentials in a resistance network chosen to represent the overburden, coal seam, reaction zone, and underburden. The solution to the set of simultaneous, linear equations is accomplished using matrix techniques and utilizing a so-called banded solver. The model calculations are limited to the current electrodes co-linear with the injection and recovery wells. The presence of the injection and recover wells, as well as instrument wells, is taken into account. Due to the expanding volume of carbonized coal, the model calculations of the electric fields show a behavior which might be used to locate this volume.