  It has always been considered a serious error to treat the cosmological
redshift as a Doppler velocity effect rather than the result of space
expansion. It is demonstrated here that in practical terms this is not the
case, and that the apparent distance - redshift relation derived from a Doppler
interpretation is reasonably consistent with supernova data (though not as good
as the standard model with dark energy). The normal Doppler effect is examined
in detail and shown to conserve energy as expected. Because of the equivalence
between the general relativistic space expansion paradigm and the Doppler
effect (as demonstrated) the long-standing problem of energy loss associated
with the expansion of the Universe is treated in a similar manner to the normal
well-behaved Doppler effect. The mechanism by which energy is conserved with
the normal Doppler shift is applied to the cosmological redshift and the energy
violation disappears. However, an additional luminosity-dependent recession
factor is introduced. The effect on astronomical objects is examined and it is
found to add only a small additional redshift to a body generating power by
nuclear means but can be very large for objects powered by gravity. A possible
connection to the claimed anomalous redshift of quasars is considered.
