over and out

To see how energy efficiency works to curb energy-demand growth, imagine if the world’s economies grew as projected through 2030, but efficiency was held flat at 2005 levels. In that case, global energy demand in 2030 would not be almost 35 per cent higher than in 2005, as we currenty project; it would be about 95 per cent higher. Put another way, gains in energy efficiency through 2030 will curb energy-demand growth through 2030 by about 65 per cent.