Upgrading lighting within the main body of the church using LED lamps

The current lighting system was installed approximately 15 yeas age, the lamps use (tungsten/halogen linear) are no longer manufactured, we therefore are having to change to an LED based scheme. As no suitable LED lamps are currently available or or suitable for the current bespoke light fittings, all fitting will need to be replaced.
As a result of planning this upgrade, we are informed by our design company that we will also increase the level of illumination and make a significant saving in running costs.