Those who ask ‘how will we pay for’ a Green New Deal need to learn public finance. Ditto those fearing inflation. We’ll pay for the GND as we do everything else, and the goods it produces will absorb all the money it draws.
The money that’s spent, for its part, is never ‘raised’ first. To the contrary, federal spending is what brings that money into existence.
We pay for this the same way the government pays for everything, Congress will authorize necessary spending, and Treasury will spend. The cost of NOT paying for it today will FAR EXCEED anything we have to pay today.