The new data show that, LED lighting, cleaning car engine and smart refrigerator in a substantial increase in the world, helping to create a scale of at least an annual $ 310 billion energy market.

According to the IEA (International Energy Agency) report, more environmentally friendly products are beginning to have a significant impact on many of the country's energy consumption.

In the 18 countries surveyed in the report (including the United States, Japan, South Korea and the United Kingdom), and from 2001 to 2011, final energy consumption reduction of 5 percent, mostly due to investments in energy efficiency.

But the greatest impact on energy efficiency area is home field, from 2001 onwards, making energy efficiency a 5% decline in home energy consumption.

In most countries surveyed, demand growth for white goods such as refrigerators and washing machines as good as before, these appliances become more intelligent in terms of electricity.

Shift, the number of TVs, smartphones, PC and other devices increased, the energy consumption is also more than ever.

But some of the implementation of related policies also help save energy, these policies encourage more to replace the old incandescent light bulbs with more energy-efficient (eg energy-saving lamps and LED lights).

Scientists in Japan and the United States this week because of the invention of LED technology jointly awarded the Nobel Prize in Physics in 2014, this technology allows LED lights all over the world.

Another promote energy efficiency factor is fuel economy standards, which cover 70 percent of the world's light passenger car market.

The IEA said that wider use of these standards is expected to make suitable investment vehicles to achieve this standard in each of at least $ 80 billion over the next five years, fuel costs will save 40 billion to 190 billion U.S. dollars.

This is the second annual report of the International Energy Agency on energy efficiency initiatives written, but also a potential efforts to control carbon dioxide emissions aims, scientists will increase carbon dioxide emissions seen as the root causes of climate change.

The latest report found that energy efficiency is concerned with the size of the financial market has reached $ 120 billion per year, corporate bonds and climate finance environmental protection plans and other products increased.

IEA energy efficiency and environmental department heads, the report co-author Philip? Benoit (Philippe Benoit) said that although the total amount of investment in energy efficiency is now at least $ 310 billion per year, but the need to invest more funds will be reduced to carbon dioxide emissions scientists believe that avoiding dangerous levels of climate change.

He said: "We estimate that over the next 20 years, we average about $ 600 billion of investment annually