Japanese conversion to LED lights would slash energy usage

A study in Japan has concluded that the country’s annual energy consumption could be slashed by 9 percent if it were possible to replace all the fluorescent and incandescent lights used in Japan with LED lights. The results were reported in an article in the Mainichi Daily News.

The study, by the Institute of Energy Economics (IEE), a foundation supervised by the Ministry of Economy, Trade and Industry (METI), estimated that 92.2 billion kWh of electricity – worth the output of 13 nuclear reactors – would be saved annually if the switch was made.

"Promoting the introduction of LED lights will serve as energy-saving measures that have immediate effects and sustainability," said a representative of the IEE, which conducted the calculation in response to the accident at the Fukushima nuclear power plant and the ensuing public attention to the nation's energy policy.

There are an estimated 1.6 billion lights in use in Japan, of which 870 million are in households, 580 million in offices and commercial buildings, and 160 million in the manufacturing sector. As the Table shows, the amount of energy saved would be greatest in the offices/commercial sector.

    Number of lights Annual energy consumption
(billion kWh)
Incandescent & fluorescent
Annual energy consumption
(billion kWh)
LEDs only
Savings (billion kWh)
Households 870 million 38.2 14.1 24.1
Offices & commercial buildings 580 million 89.1 34.6 54.5
Manufacturing sector 160 million 23.3 9.7 13.6
Total 1.6 billion 150.6 58.4 92.2

However, the initial cost of installing LED lamps is very high, says the study, estimating that LED lamps cost 20 times the price of incandescent bulbs and more than twice that of a fluorescent bulb. If all the incandescent and fluorescent lights were replaced with LED counterparts, the initial cost would be 15.7 trillion yen ($194 billion).

Replacing all the incandescent lights with LED lamps is more feasible, since this would have an initial cost of 850 billion yen ($10.5 billion), but would save 27.3 billion kWh annually, worth the output of four nuclear reactors, according to the institute.

"Replacing incandescent lights with LED lights at offices and households, which can be easily done, will help save energy. In that way, we'll be able to introduce LED lights in phases," said an IEE official.


Cree Inc

Leads the LED industry in performance, brightness and reliability with its XLamp LED family, enabling the lighting industry with efficient, environmentally-friendly LEDs that produce beau...

Zierick Manufacturing Corp

Offers innovative solutions for interconnect applications. Specializes in wire-to-board and board-to-board applications. Provides surface mount and thru-hole products while further reduci...

InnoLight sp zoo

EU located lighting manufacturer for LED GU10 5W 600lm CRI>80 reflector, great performance, and LED E27 5W 380lm classic traditional appearance.

CSA Group

A global solutions provider of product testing and certification services for electrical, mechanical, plumbing, gas, medical and a variety of other products.

Energy Efficient Lighting

Energy Efficient Lighting offers total solutions to both conventional and more advanced LED lighting fixtures and LED retrofit kits for commercial and industrial applications.


48 companies worldwide, passionate about light and innovation, experts in developing LED lighting solutions for safe and comfortable environments with significant energy and cost savings,...

Guardian Industries

Guardian Industries Corp. is a leader in float glass, fabricated glass and high performance coated glass products. Guardian lighting solutions deliver optimal performance, flexibility and...

ELMA Electronic Inc

Provides standard and customized LED solutions. Elma's LED family offers consistent, reliable, and durable illuminating and indicating solutions.

LEDSAmerica Inc

LedsAmerica is a full line LED line company and has manufacturing in Iowa where T8 LED-O tubes and street lights are made together with PL, PARs, High Bay lights. MAx

Lumentra Inc

Provides NVLAP accredited optical (photometry, colorimetry, Lumen maintenance), thermal (mapping and transient analysis), electrical characterization services, product development, supply...


The LED, DC-DC and AC-DC power supplies from 1W - 1600W. Cincon’s lighting controllers, interfaces and devices incorporating DALI protocol. LED drivers from 25W - 150W with international ...


LTF, LLC is a U.S based solid-state lighting product development and manufacturing company with facilities located in both USA and China.

Marian Inc

Marian is a global company who supplies die cut and converted parts to the LED market. Materials include thermal pads, reflective, venting, gaskets, insulators, diffusers and more.

Colorimetry Research

Specializes in the field of optics, manufacturing, electronics and software enables us engineer products with the right balance of hardware and software.

eldoLED America Inc

Designs and manufactures drive solutions for LED based lighting systems. Our technologies empower our customers to deliver the promise of LED lighting.

Cirrus Logic Inc

Cirrus Logic develops high-precision, analog and mixed-signal integrated circuits for a broad range of innovative customers across a variety of energy-related applications, including the ...


Established in 2002 as an ecommerce store for all your LED product needs.


Designer and manufacturer of custom and industry standard LED, DC-DC and AC-DC power supplies from 1W to 1600W. Cincon also designs and manufacturers lighting controllers, interfaces...

Illumination Machines

Illumination Machines designs custom optics, heat sinks, and remote phosphor systems for LED luminaires and lamps.

eldoLED BV

eldoLED is a world leader in the design and manufacture of intelligent drive solutions for LED based lighting systems. Our technologies empower our customers to deliver the promise of LED...







Have a press release or other announcement you'd like to share?

Submit Announcement

Miss a webcast? Watch it in the archives


LEDs Magazine Newsletter

Our weekly flagship news source

Product Focus

Monthly newsletter

Illumination in Focus

Bi-monthly newsletter

Copyright © 2007-2014. PennWell Corporation, Tulsa, OK. All Rights Reserved.