stiglitzs notes this. many -- i'm quoting him here -- many energy efficiency technologies actually have a negative cost to implement. now, you got to be an economist to use the phrase "negative cost." negative cost, obviouslyification is economic economicese for "that's a good thing." the reverse case is the trump administration's standard to frees fuel standards for cars. it will cost american consumers hundreds of billions of dollars more at the pump. no surprise all that extra cost for consumers goes to big oil which has the trump administration obedient lit in its pocket. stiglitz's testimony estimates the total benefits to the u.s. economy from shifting away from fossil energy sources at around $1 trillion by 2050, $1 trillion by 2050. like i said, a trillion-dollar negative cost. it is a good thing. it is a really good thing. and if we weren't completely in tow to the fossil fuel industry around here, we would be striving for it. stiglitz recommends the policies to get us to that low-carbon economy.