Read this sentence again. 

"Vale entered into a contract to enable the supply of natural gas to the São Luís Plant, in Maranhão, starting in 2024, thus consolidating the use of this fuel in all its pellet plants."

Consolidating the use of this fuel in all its pellet plants.. "all pellet plants"  ALL ITS plants. 

I think it says pretty clearly here. Electricity is too expensive, and natural Gas is a more economically viable fuel source. It will help them to reach their carbon emission target by reducing cost in fuel at the same time.

I think we are done. Finished. PYR should consider switching its fuel source. If I were Vale, I would not use electricity as well. Way too expensive to use for such a massive plant. Our electricity baseboard heating at home is much more costly than if we could have used natural Gas as a source. No brainer.

 I really hope I am wrong.