we have a series of program at usta to encourage market access. we will continue to work hard. >> ernie, let me bring you into the conversation. ustr has been very busy negotiating an agreement through tariffs oneliminate environmental goods. how important is that to united states both in terms of making sure that we have the ability to import technology at low levels, that also what does it mean for export markets to produce high tech energy technology that can be exported tariff free? >> it is critically important. i put it in the context that we need a clean energy transformation in this country and elsewhere. as we develop our domestic market, that will of course provide a foundation for exports as well. to give you a scale, i mean this will be a multi-decade transformation. the markets are forming now, but the estimate is that if you look years, and you expect about half a percent of gdp invested into energy technologies, that's an average of $1 trillion a year. that is a lot of money. so we want to be, obviously, at the head of that train. w