There are many reasons LED's are the most effective technology currently employed in the energy savings industries, from safety, energy and consumption to durability and non direct operation.
Without getting too technical for the non electrical engineers, let use some information from EnergyStar.gov:
Incandescent bulbs produce light using electricity to heat a metal filament until it becomes “white” hot or is said to incandesce. As a result, incandescent bulbs release 90% of their energy as heat. These are the classic, Edison inspired bulbs from the 1800's, and represent the least efficient technology due to excess heat and inefficient conversion of energy to light.
Fluorescent (and compact fluorescent (CFL) bulbs use an electric current flowing between electrodes at each end of a tube containing gases. This reaction produces ultraviolet (UV) light and heat. The UV light is transformed into visible light when it strikes a phosphor coating on the inside of the bulb. This is "lighting 2.0", and once running can consume 70% less energy than the older incandescent bulbs.
LED (Light–Emitting Diodes) bulbs, are semiconductor devices that produce visible light when an electrical current passed through them. Think "lighting 3.0". LEDs are a type of Solid State Lighting (SSL), as are organic light–emitting diodes (OLEDs) and light–emitting polymers (LEPs).
The main focus is energy consumption, however there are other very important concepts such as safety, durability, environmental friendliness etc...
While changing a light bulb out for another type does have savings, there is a critical difference in approach when it comes to true energy efficiency projects. If you are trying to qualify for special programs like On-Bill Financing, trying to get ADA compliant, working with retrofitting non standard lighting systems, or have stringent building codes and site specific requirements, you need an experienced partner. Many systems sold are actually just residential bulbs that don't take into consideration the unique requirements of many retail, commercial, and industrial needs.
It is not uncommon for Ecogreen Solutions to take on a project that was mishandled by previous contractors. We have been asked to take over projects where lack of product knowledge, poor management, lack of in field experience, and even shady business practices resulted ins erious problems for the customer. Because of the press and incentive programs offered, many contractors added energy effeciency to their services, and plunged right in to projects they had no business doing.
Ecogreen May 26th, 2015