The advent of LED lighting has caused a seismic shift in the lighting industry, creating a renewed interest in how to best upgrade the lighting in existing buildings. One of the best places to start is to do an inventory of what your current lighting system is and what its strengths and weaknesses are. This will enable you to identify where to put most of your efforts.
Once the audit is evaluated, it is time to start considering the most appropriate lighting options. Whether to retrofit, replace, or redesign are serious decisions to make, and they will have implication on the costs, energy savings, and productivity of the resulting lighting system. No one approach is right for every project. If the project is dependent on utility participation, there may be other factors to consider as well.