35 years of Energy Efficiency
Energy efficiency improvements that have taken place over the last 35 years saved the US $800 billion last year, an average of $2,500 per person, according to a report by the American Council for an Energy-Efficient Economy (ACEEE, which was started 35 years ago). The savings are in many areas, from efficient appliances to the grid to transportation. But the report says that there is another $10 trillion in savings to be had from continuing progress in efficiency!
Read more here: http://energyefficiencymarkets.com/energy-efficiency-progress-what-weve-gained-in-35-years/