The US Department of Energy (DOE) has forecasted in its annual SSL R&D plan for 2015 that by 2030 approximately 80% of all lighting fixtures in the US will be LED lighting which would result in an annual energy savings of up to 395 TWh, a 60% reduction in electricity consumption, which at a commercial price of $0.10/kilowatt-hour would correspond to an annual savings of $40 billion.
The US Department of Energy in its annual reporting continues to project direct AC LED technology and High-voltage LEDs as promising technologies in the continued adoption of LED lighting. In the 2015 report, DOE has again mentioned direct AC LED technology and High-Voltage LEDs as the next generation of light sources.
Information Source: http://www.energy.gov/eere/ssl/downloads/solid-state-lighting-rd-plan
