Who could improvements in energy efficiency be achieved?

Energy efficiency is one of the largest and lowest cost ways to extend our world's energy supplies and reduce GHG emissions. Curbing demand reduces the amount of oil, natural gas, coal, and other energy sources that must be developed and delivered. Gains in energy efficiency through 2030 will curb energy-demand growth by about 65 percent.

- more efficient vehicles

-public transport being used

-and anything else that preserves fossil fuels, such as all sources of renewable energy. geothermal energy, more people with solar panel housing. by 2020 the government hope for all new buildings to be energy efficient. hope this helps. im answering the same question for my georgraphy case study -.-