Low power factor and harmonics are a frustration for electrical installations. They can cause power losses and reduced e nergy reliability. In the context of increasing concern about energy efficiency and energy management, power factor and harmonics are impor tant issues to consider for the management of electrical installations. This course will explore powe r factor and harmonics and w ill explain how power factor correction and harmonic mitigation provide immediate benefit in terms of reduced power losses, reduc ed electricity bill, and the possibility to use the total system capacity.