Global lighting industry is currently transitioning in terms of technological advancement to make this sector more energy-efficient thus helping in the mitigation pathway for climate change. The use of the electronic ballast in CFL technology is known to have an impact on its electric performance due to its harmonics injection. LED lighting from the viewpoint of efficiency is more effective for the lighting industry. The LED driver circuitry exhibits non-linear characteristics and is also responsible for generating harmonics into the network. Since the CFL to LED transition will not take place immediately, the blend of these two lighting technologies will be experienced in residential as well as commercial applications and therefore, the impact of these combinations need to be measured. Laboratory tests on various combinations of CFLs and LEDs of different brands and ratings were conducted and harmonic performances of the combinations were analyzed at a fixed voltage conditions. Harmonic aggregation result confirms that combination of CFLs and LEDs can produce much lower harmonics compared to a combination of CFLs only.