In some black hole solutions, these do not exist the same energy-momentum complexes associated with using definition of Einstein and Moller in given coordinates. Here, we consider the difference of energy between the Einstein and Moller prescription, and compare it with the energy density of those black hole solutions. We found out a special relation between the difference of energy between the Einstein and Moller prescription and the energy density

We use Moeller's energy-momentum complex in order to explicitly compute the energy and momentum density distributions for an exact solution of Einstein's field equations with a negative cosmological constant minimally coupled to a static massless scalar field in a static, spherically symmetric background in (2+1)-dimensions.

We obtain the energy distribution of the gamma metric using the energy-momentum complex of Moller. The result is the same as obtained by Virbhadra in the Weinberg prescription.

We calculate the energy distribution in a static spherically symmetric nonsingular black hole space-time by using the Tolman's energy-momentum complex. All the calculations are performed in quasi-Cartesian coordinates. The energy distribution is positive everywhere and be equal to zero at origin. We get the same result as obtained by Y-Ching Yang by using the Einstein's and Weinberg's prescriptions.