Energy efficiency could save USA $600 billion

Reuters reports:

"The United States could save about $600 billion in energy costs by 2020 if it hiked annual efficiency spending about five-fold, business consultants McKinsey and Co said in a report on Wednesday. Governments, businesses and the general public would have to boost annual spending on existing energy-saving measures, like insulating walls and more efficient appliances, from about $10 billion annually to $50 billion per year. The upfront costs would pay off by saving $1.2 trillion by 2020, according to the report called "Unlocking Energy Efficiency in the U.S. Economy.""

There's a lot of reasons to go green. About 600 billion reasons! But we better hurry because we no longer have the time on our side.