a method for selling lighting solutions includes installing a lighting system and measuring the amount of lumens emitted and / or measuring the changes in light spectrum . the method also includes determining a fee based on the amount of lumens emitted and the changes in light spectrum . the fee may also be calculated based on the services rendered for the installation and the maintenance of the lighting system . a lighting solutions system may include means for measuring the light output and means for determining a fee based on the light output . the lighting solutions system may also include means to allow the customer control of the lighting solutions system .