Green Ammonia Project, page-83

"Green hydrogen production is accelerating, and according to IEEFA is approaching light speed.

“Australia is clearly showing the world’s electricity market the future. On sunny days — 10am to 3.30pm daily — electricity prices are now negative. EVs, batteries and pumped hydro can absorb some of this negative cost electricity, but low–capacity factor GH2 facilities will profiteer on spilled electricity as electrification of everything drives decarbonisation.”

The elements that make up the manufacturing supply chain are scaling up. “Nel moved from 40 megawatts (MW) to 500MW in 2021; ITM Power from 100MW to 1000MW in 2021. In October 2021 Thyssenkrupp targeted a fivefold expansion to 5GW of manufacturing capacity online by 2025 and in the same month FFI and Plug proposed 2GW of manufacturing capacity at Gladstone, Australia.”

It is expected that electrolyser capital costs will be down by 50–80% by 2030, with a tenfold expansion every couple of years. In 2020, electrolyser production was double that of 2019. BloombergNEF estimates electrolyser capacity globally at 15 GW by 2024.
In February 2020, Japan had the largest operational GH2 facility (10 MW), but by January 2021, Air Liquide opened a 20 MW facility in Canada. Then Shell started construction on a 100 MW site in Germany. The records keep tumbling, just as they did for batteries. The title of the largest battery in the world was not held for long. Here’s more from IEEFA:
“Thyssenkrupp and Shell announced a 200MW unit in Rotterdam just last month to be commissioned by 2024/25. New Zealand is even more ambitious, with Meridian and Contact Energy proposing a 600MW facility for a 2025/26 start-up.”

https://cleantechnica.com/2022/02/01/finance-pivots-to-green-hydrogen/?s=03

The main points I got from this are that MNB's 100 or 200MW green ammonia project is not a small project.
Costs will be coming down rapidly with the very large manufacturing expansions mentioned in the opening paragraphs. MNB will likely commission the phosphate before committing to the green ammonia so capital costs will likely be much lower than they are now for any projects currently financed.
Ten fold expansion every couple of years. Green ammonia certainly is looking like the growth sector that will capture investor attention going forward.