A surge in LED lighting, cleaner car engines and smarter fridges round the world has helped create an energy saving market worth at least $310bn a year, new figures suggest.
The greener products are also starting to have a measurable impact on the amount of energy used in many countries, according to a report by the International Energy Agency.
Among 18 countries studied in the report, including the US, Japan, Korea and the UK, final energy use fell 5 per cent between 2001 and 2011, mostly because of investments in energy efficiency.
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