Energy density in classical electrodynamics

It is shown that once the Maxwell equations have been couched in terms of a system of first-order partial time derivatives, a novel type of energy density function becomes apparent. Analysis of some classical radiation and charge configurations suggests that the new measures are interesting alternatives to the conventional Poynting measures. In many instances the proposed measures and the Poynting measures have identical values, but generally they differ. An experiment is proposed that might validate one system or the other.<>