[oil pan 4]

So it seems like they are going to electrolysis the water for hydrogen.
Problem is that takes 237kj per mole of water. Now to convert that into knuckle dragger imperial units (mostly).
Now 237kj isn't much energy only 0.2777wh but one mole of water isn't very much water and it's almost no hydrogen, every mole of water is 2 grams of hydrogen.
So 77wh makes a pound. Now this is bare minimum theoretical power to split H2 and not actual.
The mole weight of ammonia is 17, 3 of that 17 is hydrogens.
To make the hydrogen in 170 million tons of ammonia you just need about 30 million tons of hydrogen.
It will only take about 16.6 gigawatt hours to make the hydrogen if it were 100% efficient. Realistically it will be more like 30.
It doesn't make sense to split water with solar power until all the coal and natural gas powers plants are replaced with renewable.
As of last year the United States made 66 Terra watt hours with solar, which made up about 1 and 2/3 precent of all US electrical production.
Electricity only makes up about 1/3 of the total energy we use. So solar has grown to where it can effect the rounding error in total energy use.
So the build out till we get to renewable hydrogen / ammonia is approximately never.