  We review the potential of long and intermediate baseline reactor neutrino
experiments in measuring the mass and mixing parameters. The KamLAND experiment
can measure the solar mass squared difference very precisely. However it is not
at the ideal baseline for measuring the solar neutrino mixing angle. If low-LMA
is confirmed by the next results from KamLAND, a reactor experiment with a
baseline of 70 km should be ideal to measure precisely the solar neutrino
mixing angle. If on the contrary KamLAND re-establishes high-LMA as a viable
solution, then a 20--30 km intermediate baseline reactor experiment could yield
very rich phenomenology.
